DE112017005555T5 - DEVICE FOR SYNTHETIC IMAGES WITH LOCKING FEATURES - Google Patents

Abstract

A synthetic image device (1) comprises an image layer and a focusing element array. Composite image objects of the image layer are an association of at least a first and a second set of image objects. The first set of image objects is arranged to lead to a synthetic guidance image (41). The synthetic guide image, when moved in one direction for viewing, represents a first field and a second field, thereby moving them to a predetermined geometric relationship with respect to each other. The second set of image objects is arranged to result in a synthetic effect image (42) within a limited effect field of view. The limited effect field of view is selected to include viewing directions only in an angular proximity from any one of the directions, or to exclude viewing directions only in an angular proximity from any one of the directions.

Description

TECHNICAL AREA

The present invention relates generally to optical devices and manufacturing processes therefor, and more particularly to synthetic image devices and methods of fabrication therefor.

GENERAL PRIOR ART

Synthetic image devices are today often used to generate striking visual effects for many different purposes. Application examples are z. As security markers, manipulation displays or simply aesthetic images. Normally, the synthetic image device should be provided as a label or as an integrated part in another device. Many different optical effects have been discovered and used and often different optical effects are combined to give a particular required visual appearance.

A typical synthetic image device provides an array of small focussing elements and image objects formed on different planes of a thin film. The focussing element may be various types of lenses, apertures or reflectors. An image layer is provided with image objects. The image layer is provided relative to the array of focusing elements, so that when the device is viewed from different angles, different parts of the image objects are enlarged by the focusing elements and together form a one-piece image. Depending on the design of the image objects, the synthetic image may change in different ways if the viewing directions, for. B. viewing angle to be changed. A typical implementation of the synthetic image device is a thin polymer film.

The actual perception of the synthetic image is through the eye and brain of the user. The ability of the human brain to produce a comprehensive set of fragmented fields can be used to create a "surprise effect." Such striking effects are often used for security and / or authentication purposes.

When the focussing elements and the image objects are perfectly aligned, the intended "central" synthetic image can be seen by viewing the synthetic image device from a direction perpendicular to the plane of the focussing elements. However, the alignment of the focussing elements and the image objects is not very easy to achieve, at least in mass production lines, because existing alignment techniques are expensive to implement.

Instead, if the focussing elements and the image objects are offset, the intended "central" synthetic image is instead to be seen from another direction that is not perpendicular to the plane of the focussing elements. A "surprise effect" is often provided in the intended "central" synthetic image since it is believed that this direction is easy to find. However, if there is a misalignment, the "surprise effect" may be difficult to find because the viewer does not know at which viewing angle relative to the surface of the synthetic image device he must look for the "surprise effect". Authentication or security checks can therefore be difficult to perform in a similar manner.

Examples of synthetic image devices representing various types of co-existing synthetic sub-images are disclosed in the published international patent application WO 2015/034551 A disclosed.

SUMMARY

A general object with the technology presented herein is to improve the ability to find certain viewing angles of synthetic images.

The above object is achieved by methods and apparatus according to the independent claims. Preferred embodiments are defined in the dependent claims.

In general terms, a synthetic image device in a first aspect includes an image layer and a focusing element array. The image layer is disposed in a vicinity of a focal length of the focusing elements of the focusing element array. Composite image objects of the image layer are an association of at least a first set of image objects and a second set of image objects. The first set of image objects is arranged to guide to at least one first synthetic guidance image when placed in a vicinity of a focal length of the focusing elements and viewed through the focusing element array. The synthetic guide image, when moved in unidirectional view from a set of separate directions, represents a first field and a second field, thereby moving them to a predetermined geometric relationship with respect to each other. The second set of image objects is arranged to result in at least one second synthetic effect image within a limited effect field of view of the synthetic effect image when placed in a vicinity of a focal length of the focusing elements and viewed through the focusing element array. The limited effect field of view of the synthetic effect image is selected to include viewing directions only in an angular proximity of any of the directions of the set of separate directions or to exclude viewing directions only in an angular proximity of any of the directions of the set of separate directions.

In a second aspect, a method of making a synthetic image device comprises generating a numerical representation of a first set of image objects arranged in image cells to guide to at least one first synthetic guidance image when in close proximity to a focal length of the image Focusing is placed and viewed by a focusing element arrangement. The synthetic guide image represents a first field and a second field, wherein changing a viewing direction, a relative geometric relationship is changed. A predetermined relative geometric relationship between the first sub-image and the second sub-image corresponds to image objects positioned at a first position in each image cell. An effect vision area is defined, comprising the first location and an edge. A numerical representation of a second set of image objects is arranged which is arranged to guide to at least one second, synthetic effect image when placed in a vicinity of a focal length of the focusing elements and viewed through the focusing element array. The numerical representation of the second set of image objects is modified within or outside the effect-vision area to cause an abrupt change in the appearance of the synthetic-effect image. The numerical representation of the first set of image objects and the numerical representation of the second set of image objects are combined into a numerical representation of composite image objects. An image layer is formed according to the numerical representation of composite image objects. A focusing element array is formed with the image layer located in proximity to a focal length (the focusing elements of the focusing element array).

In a third aspect, a method of authenticating an object with a synthetic image device provided on a surface of the object comprises observing a first synthetic guidance image of the synthetic image device in a viewing direction. The synthetic guide image has a first partial image and a second partial image. The synthetic image device is moved to change the viewing direction to cause the first field and the second field to move in a predetermined relative geometric relationship with respect to each other. An abrupt change in the appearance of a second, synthetic effect image is observed as a sign of authenticity when it is moved to the predetermined relative geometric relationship.

An advantage of the proposed technology is that surprise effects in the synthetic images of synthetic image devices are easy to find without the need for a shift alignment of the image layer and the focusing element array. Other advantages will become apparent upon reading the detailed description.

list of figures

• 1A-C sind schematische Zeichnungen von Vorrichtungen für synthetische Bilder, die verschiedene Fokussierelemente verwenden;
• 2 ist eine schematische Zeichnung, die die Betrachtung aus verschiedenen Winkel veranschaulicht;
• 3A-B veranschaulichen die Bildung eines synthetischen Bildes für zwei verschiedene Betrachtungswinkel;
• 4A-C veranschaulichen die Konzepte zum Bilden eines Beispiels für eine einstückige Vorrichtung für synthetische Bilder;
• 5 veranschaulicht ein weiteres Beispiel für eine einstückige Vorrichtung für synthetische Bilder;
• 6 veranschaulicht ein Beispiel dafür, wie ein dreidimensionales Bild erzeugt werden kann;
• 7 ist ein Beispiel für Bildobjekte einer einstückigen Vorrichtung für synthetische Bilder;
• 8A veranschaulicht eine Ausführungsform einer Vorrichtung für synthetische Bilder mit einem synthetischen Führungsbild;
• 8B veranschaulicht die Ausführungsform aus 8A, wenn sie geneigt wird;
• 8C veranschaulicht eine Beziehung zwischen einem Betrachter und einem synthetischen Führungsbild;
• 8D veranschaulicht die Ausführungsform aus 8A, wenn sie geneigt wird und ein synthetisches Effektbild aufweist;
• 8E veranschaulicht ein begrenztes Effektsichtfeld;
• 9A-C veranschaulichen andere Ausführungsformen einer Vorrichtung für synthetische Bilder mit einem synthetischen Führungsbild;
• 10 veranschaulicht verschiedene Betrachtungsrichtungen, die eine vorbestimmte geometrische Beziehung in dem synthetischen Führungsbild ergeben;
• 11 veranschaulicht eine weitere Ausführungsform einer Vorrichtung für synthetische Bilder mit einem synthetischen Führungsbild;
• 12A-B veranschaulichen eine weitere Ausführungsform einer Vorrichtung für synthetische Bilder mit einem synthetischen Führungsbild in perspektivischer Ansicht und von oben;
• 13A-B veranschaulichen noch eine weitere Ausführungsform einer Vorrichtung für synthetische Bilder mit einem synthetischen Führungsbild in perspektivischer Ansicht und von oben;
• 14A-B veranschaulichen eine Ausführungsform einer Vorrichtung für synthetische Bilder mit einem dreischichtigen synthetischen Führungsbild;
• 15A-B veranschaulichen Ausführungsformen einer Vorrichtung für synthetische Bilder mit einem dreidimensionalen synthetischen Führungsbild;
• 16A-B veranschaulichen andere Ausführungsformen einer Vorrichtung für synthetische Bilder mit einem synthetischen Führungsbild;
• 17A-H veranschaulichen Ausführungsformen einer Vorrichtung für synthetische Bilder mit einem synthetischen Effektbild;
• 18 veranschaulicht eine Ausführungsform einer Vorrichtung für synthetische Bilder mit einem zweistufigen synthetischen Führungsbild und einem synthetischen Effektbild;
• 19 ist ein Ablaufdiagramm von Schritten einer Ausführungsform eines Authentifizierungsverfahrens;
• 20A-C veranschaulichen Ausführungsformen von Zellen in einer Vorrichtung für synthetische Bilder mit einem synthetischen Führungsbild;
• 21A-J veranschaulichen Ausführungsformen einer Zelle in einer Vorrichtung für synthetische Bilder;
• 22A-C veranschaulichen Ausführungsformen von Zellen in einer Vorrichtung für synthetische Bilder;
• 23A-B veranschaulichen eine Beziehung zwischen einer Zellposition und einem zugehörigen Fokussierelement;
• 24 ist ein Ablaufdiagramm von Schritten einer Ausführungsform eines Herstellungsverfahrens;
• 25A-B veranschaulichen Beziehungen zwischen Zellen und zugehörigen Fokussierelementen;
• 26 veranschaulicht schematisch eine Ausführungsform einer Vorrichtung für synthetische Bilder mit Zellen mit einer Vielzahl von Kanälen;
• 27A-B veranschaulichen schematisch eine Ausführungsform einer Vorrichtung für synthetische Bilder mit Zellen mit einer Vielzahl von Kanälen;
• 27C-D veranschaulichen schematisch eine weitere Ausführungsform einer Vorrichtung für synthetische Bilder mit Zellen mit einer Vielzahl von Kanälen;
• 28 veranschaulicht schematisch eine weitere Ausführungsform einer Vorrichtung für synthetische Bilder mit Zellen mit einer Vielzahl von Kanälen;
• 29A-B veranschaulichen schematisch Ausführungsformen einer Vorrichtung für synthetische Bilder, die synthetische Morphbilder darstellt;
• 30 veranschaulicht schematisch eine Ausführungsform einer Vorrichtung für synthetische Bilder, die ein kombiniertes synthetisches Morphbild darstellt; und
• 31A-C veranschaulichen schematisch eine weitere Ausführungsform einer Vorrichtung für synthetische Bilder, die ein kombiniertes synthetisches Bild darstellt.

The invention, together with further objects and advantages thereof, may best be understood by reference to the following description, taken in conjunction with the accompanying drawings, in which:

• 1A-C Fig. 10 are schematic drawings of synthetic image devices using different focusing elements;
• 2 Fig. 12 is a schematic drawing illustrating viewing from different angles;
• 3A-B illustrate the formation of a synthetic image for two different viewing angles;
• 4A-C illustrate the concepts for forming an example of a one-piece synthetic image device;
• 5 illustrates another example of a one-piece synthetic image device;
• 6 illustrates an example of how a three-dimensional image can be created;
• 7 Fig. 10 is an example of image objects of a one-piece synthetic image device;
• 8A Figure 1 illustrates an embodiment of a synthetic image device with a synthetic guidance image;
• 8B illustrates the embodiment of 8A if she is inclined;
• 8C illustrates a relationship between a viewer and a synthetic guidance image;
• 8D illustrates the embodiment of 8A when tilted and having a synthetic effect image;
• 8E illustrates a limited effect view field;
• 9A-C illustrate other embodiments of a synthetic image device with a synthetic guidance image;
• 10 Figure 11 illustrates various viewing directions that give a predetermined geometric relationship in the synthetic guidance image;
• 11 illustrates another embodiment of a synthetic image device with a synthetic guidance image;
• 12A-B illustrate a further embodiment of a synthetic image device with a synthetic guidance image in perspective view and from above;
• 13A-B illustrate yet another embodiment of a synthetic image device with a synthetic guide image in perspective and top view;
• 14A-B illustrate an embodiment of a synthetic image device with a three-layer synthetic guidance image;
• 15A-B illustrate embodiments of a synthetic image device with a three-dimensional synthetic guidance image;
• 16A-B illustrate other embodiments of a synthetic image device with a synthetic guidance image;
• 17A-H illustrate embodiments of a synthetic image device with a synthetic effect image;
• 18 Figure 1 illustrates one embodiment of a synthetic image device having a two-stage synthetic guidance image and a synthetic effect image;
• 19 Fig. 10 is a flowchart of steps of an embodiment of an authentication method;
• 20A-C illustrate embodiments of cells in a synthetic image device with a synthetic guidance image;
• 21A-J illustrate embodiments of a cell in a synthetic image device;
• 22A-C illustrate embodiments of cells in a synthetic image device;
• 23A-B illustrate a relationship between a cell position and an associated focusing element;
• 24 Fig. 10 is a flowchart of steps of an embodiment of a manufacturing method;
• 25A-B illustrate relationships between cells and associated focusing elements;
• 26 schematically illustrates an embodiment of a synthetic image device with cells having a plurality of channels;
• 27A-B schematically illustrate an embodiment of a synthetic image device with cells having a plurality of channels;
• 27C-D schematically illustrate another embodiment of a synthetic image device having cells having a plurality of channels;
• 28 schematically illustrates another embodiment of a synthetic image device having cells having a plurality of channels;
• 29A-B schematically illustrate embodiments of a synthetic image device representing synthetic morph images;
• 30 schematically illustrates an embodiment of a synthetic image device illustrating a combined synthetic morph image; and
• 31A-C illustrate schematically another embodiment of a synthetic image device illustrating a combined synthetic image.

DETAILED DESCRIPTION

In the drawings, the same reference numerals are used for similar or corresponding elements.

For a better understanding of the proposed technology, it may be useful to start with a brief overview of the synthetic image devices.

1A schematically illustrates an example of a device 1 for synthetic pictures. The device 1 for synthetic images comprises a focusing element arrangement 20 of focusing elements 22 , In this example, the focusing element is a lens 24 , In a typical case where the synthetic image should be substantially the same in different surface directions, the lens is 24 typically a spherical lens. For applications where there is a difference between image properties in different surface directions, a lenticular lens can be used.

The device 1 for synthetic images further comprises an image layer 10 , the picture objects 12 includes. The picture objects 12 are objects that look like parts 14 the picture layer 10 that are not from picture objects 12 can be differentiated. The picture objects 12 can z. From printed product microfeatures 11 and / or embossed microstructures. The picture layer 10 is in a vicinity of a focal length d of the focusing elements 22 the focusing element arrangement 20 arranged. That means a parallel beam 6 of light pointing to a focusing element 22 hits, gets broken 5 and at one point or in a small area 4 at the picture layer 10 is focused. Likewise, light that leads from a point to the image layer 10 exit, to a parallel beam 6 of light when it's the focusing elements 22 passes. A point on a picture object 12 therefore seems the entire surface of the focusing element 22 when filling from a distance in the direction of the generated parallel beam 6 viewed by a viewer, as through the eye of the beholder 2 illustrated schematically. The material 9 between the picture layer 10 and the focusing element arrangement 20 is at least partially transparent is typically made of a thin polymer film.

The distance d does not have to be exactly equal to the focusing distance of the focusing elements 22 his. First, there is always some degree of deviation, which is the area from which the optical information in a parallel beam 6 be collected, expand. This appears stronger at shallower angles, and to have a more uniform general level of resolution, a distance in the vicinity but not exactly equal to the focal length can be advantageously selected. In addition, since the surface of the focusing element has a certain two-dimensional extension, this surface could also be used to create fine objects of the overall synthetic image. In such cases, fine objects of a small area on the image layer 10 to magnify to cover the surface of the focusing element, which means that even in such a case, the actual selected distance d is selected so that it is in a proximity, but not exactly equal to the focal length. Such circumstances are well known in the art of synthetic pictures.

By arranging the picture objects 12 the picture layer 10 in an appropriate manner, the partial images that are on the surface of each individual focusing element 22 be generated by a viewer 2 perceived as a synthetic image together. Various images can be displayed to the viewer when the device 1 for synthetic images from different directions, whereby various types of optical effects can be generated, as described in more detail below.

1B schematically illustrates another example of a device 1 for synthetic pictures. In this embodiment, the focusing elements consist 22 from concave mirrors 26 , The picture layer 10 is here on the front surface in relation to the viewer 2 and the focusing element arrangement 20 is behind the picture layer 10 , The Rays 5 of light, moving from the image objects to the viewer 2 moves through the material 9 the device for synthetic images twice.

1C schematically illustrates yet another example of a device 1 for synthetic pictures. In this embodiment, the focusing elements are pinholes 28 that the light that comes from the picture layer 10 comes and to the viewer 2 flows through, restrict. In this embodiment, the synthetic image is formed by the narrow rays of light that make up the pinholes 28 flow through, and typically provides only "light" or "dark". Because the pinholes 28 have no magnification effect, the majority of the considered surface does not contribute to the synthetic image.

2 schematically illustrates the selection of different subareas 4 the picture layer 10 , The picture layer 10 includes picture objects 12 , When the device 1 for synthetic images in a perpendicular direction with respect to the main surface of the device 1 for synthetic images, as illustrated in the left part of the drawings, the area is located 4 by the focusing element 22 is enlarged, at the center line, as shown in the figure by a dashed line, of the focusing element 22 , If a picture object 12 is present at this position, an enlarged version of the surface of the device 1 shown for synthetic images. As in the case of 2 however, there is no image object and there is no enlarged image on the surface of the device 1 for synthetic images.

When looking at the device 1 for synthetic images at a different angle, such as. For example, as illustrated in the right part of the figure, the area becomes 4 on which the focusing element 22 focused, moved to the side. In the illustrated situation, the area overlaps 4 with at least a part of an image object 12 and an enlarged version is on the surface of the device 1 to see for synthetic images. In this way, the images that attach to the surface of the device can become 1 for synthetic images, vary for different viewing angles, which can be used to achieve various types of optical effects of the synthetic images.

One type of synthetic image is a so-called Moire image. The Moire effect has been well known for many years and is based on the interaction of two slightly mismatched arrangements. 3A schematically illustrates in the upper part an example of a part of an image layer 10 , The picture layer 10 includes a repeating pattern 15 the picture objects 12 , In this example, the picture objects are 12 selected so that they are the letter " K "Acts. The focusing elements 22 that with the illustrated part of the image layer 10 are indicated by dotted circles to indicate the relative lateral position. Both the repetitive pattern 15 the picture objects 12 as well as the focusing element arrangement 20 have a hexagonal symmetry. However, the distance between two adjacent image objects 12 slightly shorter than the distance between two adjacent focusing elements 22 in the same direction.

An area 4 is also indicated, which is the focusing area of each focusing element 22 equivalent. In the illustrated case, the range corresponds 4 a viewing direction straight from the beginning. The parts of the picture objects 12 in each of the areas 4 Thereby, they are in an enlarged version above the surface of the corresponding focusing element 22 , here as a projected image 25 designated, shown. In the lower part of 3A is the corresponding focusing element arrangement 20 so illustrated that they are the projected images 25 the picture objects 12 the areas 4 includes. The dotted lines of one of the areas 4 in the upper part to one of the focusing elements 22 in the lower part illustrates the affiliation. The different projected images on the focusing elements 22 together form a synthetic picture 100 , In this case, the synthetic picture is 100 a part of a big one " K ". When these structures are small enough, the human eye typically fills the empty areas between the focusing elements 22 and the viewer takes a full " K "True. The reason for the generation of the K is the presence of slight mismatch of the distance between the repeating pattern 15 the picture objects 12 and the focusing element arrangement 20 , In this example, the synthetic image is made using the mismatch between a repeating image pattern 15 and an array of focusing elements 22 as Moire picture 105 designated.

3B schematically illustrates the same device 1 for synthetic images like in 3A but viewed from another direction. This corresponds to a slight inclination of the device 1 for synthetic images to the left. The areas 4 representing the focusing areas of the focusing elements 22 in this direction, this will move something to the left. This causes another part of the image objects 12 to the focusing elements 22 projected as in the lower part 3B you can see. The result of leaning is that the synthetic image is 100 ie the big one " K ", Moved to the right.

wobei $F=\frac{P_o}{P_l},$

wobei P_o die Distanz des sich wiederholenden Musters 15 der Bildobjekte 12 ist und P_l die Distanz der Fokussierelementanordnung 20 ist. Für P_o < P_l ist die Vergrößerung positiv, für P_o > P_l wird die Vergrößerung negativ, d. h. das synthetische Bild 100 wird im Vergleich zu den Bildobjekten 12 umgekehrt.The viewer interprets such movement as a result of a position of the large "K" at a certain imaginary depth below the surface of the device 1 for synthetic pictures. In other words, a deep feeling is achieved. Both the magnification and the detected depth depend on the relationship between the focusing element array 20 and the repeating pattern 15 the picture objects 12 from. The prior art has shown that the magnification M obtained is determined as follows: $$M=\frac{1}{F-{\mathrm{<figure-callout\; id="2"\; label="F"\; filenames="DE112017005555T5\_0015.png,DE112017005555T5\_0026.png"\; state="\{\{state\}\}">F</figure-callout>}}^2}.$$

in which $F=\frac{P_O}{P_l}.$

in which P _o the distance of the repeating pattern 15 the picture objects 12 is and P _l the distance of the focusing element arrangement 20 is. For P _o <P _l the magnification is positive, for P _o > P _l the magnification becomes negative, ie the synthetic image 100 becomes compared to the picture objects 12 vice versa.

wobei d die Dicke der Vorrichtung für synthetische Bilder ist und R_l der Radius der Krümmung der sphärischen Mikrolinsen ist. Man kann hier erkennen, dass für P_o < P_l die erkennbare Tiefe typischerweise positiv ist, während für P_o > P_l die erkennbare Tiefe negativ wird, d. h. das Moire-Bild 105 scheint über der Oberfläche der Vorrichtung 1 für synthetische Bilder zu schweben.The recognizable image depth d _i in the moiré image can also be determined as follows: $$d_i=\left(d-R_l\right)/\left(1-F\right)+R_l.$$

where d is the thickness of the synthetic image device, and R _l is the radius of curvature of the spherical microlenses. It can be seen here that for P _o <P _l the apparent depth is typically positive, while for P _o > P _l the apparent depth becomes negative, ie the moiré image 105 seems over the surface of the device 1 to float for synthetic images.

It should be noted that the differences in the distances in the 3A and 3B are relatively large, resulting in a relatively small magnification and a relatively small apparent depth. This is for illustrative purposes. In typical devices for synthetic moiré images, the relative differences in distances may typically be much less. Differences in distances of less than 1% and even less than 0.1% are not uncommon.

The Moire images, however, have certain limitations. At first, they can only lead to repetitive images. In addition, the size of the image objects 12 limited to the size of the focusing elements. In 4A is a picture object 13 illustrated schematically. If this picture object with almost the same distance as for the focusing elements 22 out 4B is repeated, the repeated patterns of the image objects overlap 13 , The moiré image of such a structure is almost impossible for the human brain to resolve, because parts of the image objects are related to a neighboring focusing element 22 are annoying.

One solution is in 4C shown. Here is a cell 16 the picture layer 10 exclusively with each focusing element 22 associated. In every cell 16 become only parts of an image object 17 that belong to a copy of the image object, and the other objectionable image objects are removed. The different picture objects 17 will not be identical over the image layer 10 repeatedly, but instead changes the shape of the image objects 17 successively. By using these cut pieces or pieces as the picture object 17 a synthetic image is also generated. A synthetic image based on non-identical fractionated image objects 17 inside the cells 16 that with the focusing elements 22 are referred to in this disclosure as a one-piece synthetic image.

As long as the focusing area of the associated focusing element in the cell 16 is held, a synthetic image is produced, which resembles a Moire image. However, if the focusing area of the associated focusing element in an adjacent cell 16 occurs, the synthetic image disappears immediately and instead appears in a different position; there is a reversal of the synthetic picture.

Such reversal effects can be mitigated somewhat by introducing an image object-free zone between each cell at the image layer. 5 schematically illustrates such an embodiment. Here, every cell takes 16 an area that is smaller than an area of an associated focusing element. The result is that the one-piece synthetic image disappears when the focus area of the associated focusing element reaches the edge of the cell. However, a further change in viewing angle must be provided before a "new" one-piece synthetic image appears. The relationship with the disappearing image will not be identifiable in the same way. This restriction of the angles at which a synthetic image is seen is often referred to as a limited field of view.

The concepts of having cells with different image objects can be further advanced. The synthetic Moire images can be given a recognizable depth, but in principle are limited to one depth only. A true three-dimensional appearance is difficult to achieve. However, if one-piece synthetic images are considered, the freedom of switching the image objects from one cell to another can also be used, e.g. B. to provide a more realistic three-dimensionality of the images produced.

In 6 become cells 16 a picture layer 10 illustrated. Four different area 4 for each cell 16 that correspond to focusing areas of associated focusing elements when viewed from four different directions are illustrated. Image objects of the middle area 4 in each cell correspond to a viewing angle achieved when the synthetic image device is viewed in a perpendicular manner becomes. Such image objects may then be designed to be a one-piece synthetic image 110B lead out as in the lower middle part 6 illustrating a top surface of a box. Picture objects of the highest area 4 in each cell correspond to a viewing angle achieved when the synthetic image device is tilted away from the viewer. Such image objects may then be designed to be a one-piece synthetic image 110A lead out as in the lower left part 6 illustrating the upper surface and a front surface of a box. Image objects of the extreme left area 4 in each cell correspond to a viewing angle achieved when the synthetic image device is tilted to the left with respect to the observer. Such image objects may then be designed to be a one-piece synthetic image 110C lead out as in the lower right part 6 illustrating the top surface and a side surface of a box. Picture objects of the area 4 In the far right part in each cell, a viewing angle achieved when the synthetic image device is tilted toward the viewer and toward the right thereof. Such image objects may then be designed to be a one-piece synthetic image 1100 lead, as at the lowest end of 6 illustrating the upper surface, a side surface and a rear surface of a box. Together, these one-piece impart synthetic images 110A-D and further, the one-piece synthetic images derived from other regions of the cells give an impression of a rotating box in a three-dimensional manner.

In a similar manner, different types of optical phenomena can be achieved separately by modifying the image content in each cell. By fitting each part of the cell according to the required appearance of the image in a corresponding viewing direction, the one-piece synthetic image can be made to have almost any appearance. The image properties achieved thereby can be simulations of "real" optical properties, e.g. For example, a real three-dimensional image, but the image properties can also show optical effects that are not present in "real system".

An example of a part of a picture layer 10 of a unitary synthetic image device leading to an image of Fig. 5 is shown in Figs 7 illustrated.

One effect that is possible to achieve both synthetic moire images and one-piece synthetic images is that two or more synthetic images can be imaged simultaneously. These synthetic images may have a different apparent depth or height. In navigating such an optical device, the synthetic images respectively move relatively according to the ordinary parallax effect. The same applies if a one-piece synthetic image has components at different depths or heights.

According to the technology presented here, such a parallax effect can be used to define certain different viewing directions. If the one-piece synthetic image has a readily identified appearance when viewed from a particular direction, that particular direction is defined with the one-piece synthetic image itself. This also means that a search for this easily identified appearance of the one-piece synthetic image also becomes a search for that particular viewing direction.

An example in the 8A-B illustrated schematically, may facilitate understanding. In this particular example, a device represents 1 for synthetic images, a synthetic guidance picture 41 which consists of a first field 46 , which in this embodiment is an array of circles 71 acting at a detectable depth below the surface of the device 1 for synthetic images, and from a second partial image 47 , which in this embodiment is an array of crosses 72 acting at a detectable height above the surface of the device 1 for synthetic images. In the viewing direction, the in 8A is illustrated, the crosses seem 72 on the right side relative to a respective circle 71 to be located.

To try the cross 72 in the middle of the circle 71 It is natural for a person to bring the device 1 to tilt left for synthetic images. This is done according to a natural three-dimensional parallax rule, as the crosses 72 apparently at a higher altitude than the circles 71 are located. In such a tilted viewing direction, the device provides 1 for synthetic images, a synthetic guidance picture 41 ready, as in 8B illustrated. Such a maneuver is easily performed by any person, given the relative motion of the various parts of the synthetic guidance image 41 done in a traditional three-dimensional way.

As in 8C schematically illustrates the viewing angle at which the circles 71 and the crosses 72 are aligned, a certain direction d with respect to the surface of the device 1 for synthetic pictures.

By combining such a one-piece synthetic image with another synthetic image having a narrow, limited field of view centered around that particular direction, a surprise effect can be achieved. Alternatively, the other synthetic image may have a limited field of view which precludes a small angular interval about that particular direction.

In other words, a recognizable three-dimensional synthetic image can be used to guide a viewer to a specific viewing angle. At this viewing angle, it comes to something "surprising" in the three-dimensional synthetic image or an additional synthetic image. Since the relative orientation of the image objects belonging to different synthetic images is simple, the "surprise effect" can be more or less perfectly aligned with the shape of the three-dimensional synthetic guidance image.

An example of a device 1 for synthetic images with such a surprise effect is in 8D illustrated. The device 1 for synthetic pictures presents the same synthetic picture as in 8A when viewed from this viewing direction. However, if the device 1 for synthetic images to give the same viewing direction d, as in 8B and 8C has been illustrated, a synthetic effect image appears 42 out 8D containing the words "AUTHENTIC PRODUCT" over a large section of the device 1 for synthetic images shows. This particular effect is achieved by giving the synthetic guidance image a limited field of view, as in 8A 5, with the limited guide field of view excluding viewing directions in the vicinity of the direction of "aligned cross / circle". The limits of such a limited field of vision 51 is in 8E illustrated. This means that the crosses and circles disappear at or near this direction d. At the same time, an additional synthetic effect picture is created 42 providing the text provided. In addition, this synthetic effect image 42 a limited effect field of view 52 which is instead limited to a small angular interval about the direction d of "aligned cross / circle" ( 8E) , This means that the text "AUTHENTIC PRODUCT" only appears very close to this direction d. The circles 71 and crosses 72 define an object that is very easy to tilt at a specific angle, and thus the circles serve 71 and crosses 72 as a guide for the viewer, where the "surprise effect" can be found. When the particular direction is reached, or shortly before, the circles disappear 71 and crosses 72 suddenly and instead the text of authenticity appears.

In devices according to the technology presented herein, at least two sets of image objects are provided, each leading to a particular synthetic image. Synthetic image devices, such as those described above, are well known in the art. Also, a combination of two or more synthetic images to a synthetic image device as such is already known. However, the concepts presented here are based on the further fact that although the two sets of image objects result in independent synthetic images, there is a certain relationship between the two sets with respect to the field of view. In other words, the two sets of image objects in the field of view are connected to each other. The first set, here referred to as a synthetic guidance image, has a well-defined viewing direction in which the synthetic guidance image represents a natural "aligned" synthetic image. In this very same viewing direction, which is defined based on the characteristics of the synthetic guidance image, the synthetic image based on the second set of image objects, referred to herein as a synthetic effect image, provides a surprise effect, such as appearance, disappearance, or representation abrupt non-logical change of appearance. Thus, there is a very specific relationship of the field of view angles between the two sets of image objects, the sentences being completely independent in other aspects.

Generally and in other words, a synthetic image device includes an image layer and a focusing element array. The image layer is disposed in a vicinity of a focal length of the focusing elements of the focusing element array. Composite image objects of the image layer are an association of at least a first set of image objects and a second set of image objects. The first set of image objects is arranged to guide to at least one first synthetic guidance image when placed in a vicinity of a focal length of the focusing elements and viewed through the focusing element array. The synthetic guide image, when moved in unidirectional view from a set of separate directions, represents a first field and a second field, thereby moving them to a predetermined geometric relationship with respect to each other. The second set of image objects is arranged to result in at least one second synthetic effect image within a limited effect field of view of the synthetic effect image when placed in a vicinity of a focal length of the focusing elements and viewed through the focusing element array. The limited effect field of view of the synthetic effect image includes either viewing directions only in an angular proximity of any of the directions of the set of separate directions, or viewing directions only in an angular proximity of any of the directions of the set of separate directions. Preferably, the first partial image and the second partial image are provided at different recognizable depth or height.

The synthetic guidance image is thus used to find a particular viewing direction in which something surprising will happen. The synthetic guidance image can be configured in various ways. However exists a common feature in that the synthetic guidance image includes sub-images that behave in a manner that intuitively informs the viewer of how the device is prone to synthetic images.

If the fields z. For example, if different heights / depths are provided, a viewer may expect, based on the normal way a three-dimensional object behaves, that the frames move in certain directions relative to each other as the synthetic guide image is tilted.

The simplest example is a synthetic guidance image comprising two repeating two-dimensional patterns provided at different height / depth, as in FIG 8A & C specified. However, the determination of the searched viewing direction can not be limited to aligned centers. 9A illustrates another example in which circles 71 in an upper layer 48 the first part picture 46 form. The circles 71 should be at bridging objects 73 in a lower layer 49 align, creating the second subpicture 47 is formed as illustrated above in the figure.

9B illustrates another embodiment in which the letters "O" 74 and "K" 75 at different height / depth than an upper layer 48 with a first partial picture 46 or a lower layer 49 with a second partial image 47 to be provided. The required viewing direction is obtained when the phrase "OK" is formed, as illustrated above in the figure.

The synthetic leadership picture 41 the embodiments of the 9A-B is simply provided as a combination of two moiré-type synthetic images, but can also be achieved by a one-piece synthetic image.

9C illustrates yet another embodiment in which a blackout sequence is used. A filled circle 77 is called a second field 47 provided at a certain height / depth. Another, unfilled, circular area 76 is called a first field 46 at a different apparent height / depth above the apparent height / depth of the filled circles 77 provided. If the two part images 46 . 47 partially coincident, as illustrated in the upper part of the figure, obscures the unfilled circular area 76 Parts of the filled circle 77 and the required viewing direction can be seen when a total darkening is achieved, ie, when the filled circles 77 completely with the unfilled circular area 76 overlap.

One skilled in the art will recognize that variations in the design of the synthetic guide image 41 are endless.

In the example presented above, the subscreens of the synthetic guidance image were repeating patterns and also at an equal distance. In other words, in one embodiment, the synthetic guidance image includes two pattern layers at different apparent height and / or depth. The predetermined relative geometric relationship with each other corresponds to a predetermined overlap relationship.

This also means that there are other ways to combine the subpictures. Referring again to the 8A and B as an example, the crosses 72 with at least a multitude of circles 71 coincide, defining other viewing directions. The "effect" must then be performed in any of these directions. This will be in 10 illustrated. Here are two circles 71 illustrated and there are two directions d, which is a center of a circle with the cross 72 connect, possible. These directions d thus together form a sentence D from single directions where alignment is achieved.

In another embodiment, an upper pattern layer of the two pattern layers has a recognizable size which is close in size to a recognizable depth of a lower pattern layer of the two pattern layers. That is, in tilting the synthetic image device, the upper pattern layer seems to move a distance in one direction and the lower pattern layer moves an equal distance in an opposite direction. The distance of the detectable height between the patterns thus becomes relatively large without the need to use very large magnifications, which in turn means that the angular spacing between two adjacent directions of the set of separate directions at which alignment occurs is easily made can be to be reasonably small. In order to move from a separate direction where there is an intersection with an adjacent one, each pattern layer must move only half the distance.

In another embodiment, the upper pattern layer and the lower pattern layer have the same periodicity. In such an embodiment, the pattern collapses in the same direction over the entire surface of the synthetic image device, which typically simplifies the design. A simple embodiment is in 11 illustrated. In this embodiment, the upper layer becomes 48 . the first part picture 46 at an apparent height + h above the surface 50 of the synthetic image device. The lower layer 49 that is the second part of the picture 47 at an apparent height - h, ie a depth of h, below the surface 50 of the synthetic image device.

In another embodiment, the upper pattern layer and the lower pattern layer have different periodicities as in FIGS 12A-B illustrated. In this embodiment, the upper layer becomes 48 that is the first drawing file 46 includes, at a detectable height h1 over a surface 50 of the synthetic image device. The lower layer 49 that is the second part of the picture 47 includes, is at a detectable height h2 above the surface 50 of the synthetic image device. In addition, the periodicity differs for the different layers. As in 12B can be seen, an occurrence of the repeating element of the first field 46 at the same time an occurrence of the repeating element of the second field 47 be aligned 59. Any appearance or disappearance of a synthetic effect image may occur in a portion P of the entire image area A, as discussed in greater detail below.

In yet another embodiment, as in the 13A-B illustrates a first image part 46 in an upper layer 48 with a printed second image part 57 at or in the device for synthetic images, eg in the image layer 10 , collaborate. This printed second image part 57 thus appears at a height above the synthetic image device which is substantially zero.

In addition, more than two image portions may be used for alignment purposes of the present disclosure. 14A illustrates an embodiment in which three layers are used. In a first drawing 46 a first layer shows large circles. In a second partial picture 47 a second layer shows smaller circles, three of which fit into one of the larger circles. In a drawing file 43 In a third layer even smaller circles are shown, of which three are in the circles of the second field 47 fit. The sub-images are provided at different heights and in certain well-defined directions, with the smaller circles fitting together, as in FIG 14B illustrated. As those skilled in the art will appreciate, any other types of images and any number of layers may be used for alignment or guidance purposes.

However, it is of course also possible to use non-repeating synthetic guidance images. Such synthetic guidance images may advantageously be one-piece synthetic images.

As an example, the first and second partial images 46 . 47 Parts of a common three-dimensional synthetic guidance picture 41 be as through an embodiment in 15A illustrated. The synthetic guide image is in the form of a truncated pyramid in this embodiment 78 in front. In the left part of the figure is the pyramid 78 to see from the side. An observer may simply tilt the synthetic image device to achieve a perfect top view instead, as illustrated in the right part of the figure. The second part picture 47 here consists of the lower edge of the stump of a pyramid 78 and the first part picture 46 consists of the upper edge of the stump of a pyramid 78 , If these two fields 46 . 47 centered with respect to each other, a plan view is achieved.

15B illustrates a similar embodiment in which a support 79 as a synthetic guide 41 is used. In the left part of the figure is the support 79 viewed from the side, while the support in the right part of the figure straight from above the support 79 is looked at. The first part picture 46 consists of the top edge of the prop 79 and the second field 47 consists here of the lower edge of the support 79 ,

The synthetic guidance image may also include various types of animation effects. In 16A represents the device 1 for synthetic images, a synthetic guidance picture 41 which is a ball 82 and a circle 81 includes. When tilting the device 1 for synthetic images to the ball 82 in a circle 81 to place, the synthetic leadership changes 41 to the effect that the circle 81 is reduced in size. This makes it seem as if the ball 82 on the circle 81 pushes to make him shrink. If the circle 81 eventually disappears, the required viewing direction is reached and there may be a "surprise effect", as discussed in more detail below.

In 16B Another embodiment is an animated synthetic guidance image 41 used, shown. The synthetic leadership picture 41 Here is a pattern of circles, including a first circle 83 and a second circle 84 , When tilting the device 1 for synthetic images to the right, the circles expand 83 . 84 until they touch. Then the required viewing direction is found. A "surprise effect", in this In certain embodiments, the appearance of the text "SAFE" occurs.

In many applications, for the sake of clarity of the synthetic image, it is advantageous to remove at least some parts of the synthetic guide image when the required viewing direction is reached or towards this direction. For this purpose, at least a portion of the synthetic guide image in certain embodiments has a limited guide field of view. This guide field of view preferably excludes the directions in which the synthetic effect image is present or absent. The first field and / or the second field disappears when the surprise effect occurs. For this purpose, the synthetic guide image, when viewed in the particular direction, would represent the first field and the second field in the predetermined relative geometric relationship with respect to each other if the limited guide field of view were neglected.

In one embodiment, the guide field of view is valid only for a portion of the synthetic guidance image.

In one embodiment, the portion of the synthetic guidance image for which the guide field of view is valid comprises the first field or the second field.

In some applications, as discussed below, it is not necessary for the synthetic guide image to disappear on the entire synthetic image device. This can be z. Example, be the case when the synthetic effect image appears only in a limited part of the device area. In such an embodiment, it is then useful to apply the guide field of view only for a part of an overall image area of the synthetic image device.

The guide field of view is a two-dimensional field of view in certain embodiments.

In other embodiments, the guide field of view is a one-dimensional field of view.

To date, most of the description has focused on the behavior or design of the synthetic guidance image. In the following, the synthetic effect picture is the main goal. In general, it is possible to combine essentially any type of synthetic effect image approach with essentially any type of synthetic effect image approach.

The surprise effect produced by the synthetic effect image is mainly caused by the restriction of the visual field of synthetic effect image. In this regard, there are three main groups of synthetic effect images. A group includes synthetic effect images with a field of view that is restricted to a small angle about the direction selected by the synthetic guidance image. Another group includes synthetic effect images with a field of view that is limited to all angles except for a small angle about the direction selected by the synthetic guidance image. Finally, the last group comprises synthetic effect images consisting of synthetic effect images of the other two groups, thereby providing a change from one image to another upon entering the small angle region around the direction selected by the synthetic guidance image.

In certain embodiments, it is of interest that the overall image area of the synthetic image device is the synthetic effect image. However, in other embodiments, instead, it may be preferable to display the synthetic effect image only in selected portions of the overall image area (A) of the synthetic image device.

The synthetic effect image may also be configured to cooperate with the synthetic guidance image to form a combined synthetic image within the effect field of view. Further examples are shown below.

One way of interacting with the synthetic guidance image is to replace one of the sub-images of the synthetic guidance image with the synthetic effect image within the effect field of view.

17A illustrates an embodiment for a device 1 for synthetic pictures. In this embodiment, the synthetic guide image is shown with circles and crosses (see 8A & D ) is used to define the required viewing direction. However, as discussed above, any type of approach may be used for synthetic guidance images. In the left part of the figure, which is a view out of the required viewing direction, only the synthetic guidance image is shown 41 to see. When the required viewing direction is reached, which is illustrated in the right part of the figure, the synthetic guidance image disappears 41 completely and becomes through the synthetic effect picture 42 replaced, which in this embodiment represents the words "PROTECTED". Here's the entire synthetic leadership picture 41 a limited guide field of view, which excludes the angles in the vicinity of the required viewing direction. The synthetic effect picture 42 has an effect field of view which instead only includes the angles in the vicinity of the required viewing direction.

In 17B is another embodiment of a device 1 illustrated for synthetic images. The situation outside the required viewing direction is similar to that in 17A where only the synthetic guidance picture 41 will be shown. When the required viewing direction is achieved, which is illustrated in the right part of the figure, part of the synthetic guidance image disappears 41 , which crosses, and is replaced by the synthetic effect picture 42 substituted, which in this embodiment the word "OK" within the circles of the synthetic guide image 41 represents. Here is a part of the synthetic guidance picture 41 a limited guide field of view, which excludes the angles in the vicinity of the required viewing direction. The other part of the image, the circles, have no limited field of view. The synthetic effect picture 42 Again, there is an effect field of view which includes only the angles near the required viewing direction.

In 17C is another embodiment of a device 1 illustrated for synthetic images. The synthetic leadership picture 41 here comprises a pattern of circles and a pattern of solid squares consisting of two sub-images. When the required viewing direction is reached when the squares completely cover the circles, as illustrated in the right part of the figure, an intersecting part of the filled squares and the circles of the synthetic guide image disappears 41 and gets through the synthetic effect picture 42 substituted, which in this embodiment the word "OK" within the circles of the synthetic guide image 41 represents. Here is a part of one of the partial images of the synthetic guidance image 41 a limited guide field of view, which excludes the angles in the vicinity of the required viewing direction. The other part of the image, the circles, have no limited field of view. The synthetic effect picture 42 Again, there is an effect field of view which includes only the angles near the required viewing direction.

In 17D is another embodiment of a device 1 illustrated for synthetic images. The synthetic leadership picture 41 is similar to 17A outside the required viewing direction. When the required viewing direction is reached, which is illustrated in the right part of the figure, the synthetic effect image appears, but only in part P of the overall picture area A , creating the synthetic leadership picture 41 is replaced. The synthetic leadership picture 41 however, is still outside part P of the overall image area A available. Here is the synthetic guidance picture 41 a limited guide field of view, which excludes the angles in the vicinity of the required viewing direction, but only in the area P , In addition, the synthetic effect picture shows 42 within the range P an effect field of view that includes only the angles near the required viewing direction.

It should be noted that the synthetic effect image can be of any type. Texts are often self-explanatory, but other types of images, e.g. For example, three-dimensional synthetic images can be used. At the end of the present disclosure, many different types of synthetic images are presented that can form the synthetic effect image and / or the synthetic guidance image.

In one embodiment, a change in color may be used as a "surprise effect." When a synthetic guide image is in a color used to determine the required viewing direction, a synthetic effect image in a different color with an effect field of view including only the angles near the required viewing direction results in a conspicuous effect. The synthetic effect image may be identical to the synthetic guide image except for the color, or may be a different image.

In 17E is another embodiment of a device 1 illustrated for synthetic images. The synthetic leadership picture 41 is similar to in 17D outside the required viewing direction. In this embodiment, the synthetic effect image 42 in this particular embodiment, there is a pattern of rectangles out of the required viewing direction, as illustrated in the left part of the figure. However, when the required viewing direction is achieved, which is illustrated in the right part of the figure, the synthetic effect image disappears. In this embodiment, the synthetic effect image 42 an effect field of view, which excludes the angles in the vicinity of the required viewing direction.

In 17F is another embodiment of a device 1 illustrated for synthetic images. The synthetic leadership picture 41 is similar to in 17D outside the required viewing direction. In this embodiment, the synthetic effect image 42 in this particular embodiment, there is a text "CIRCLE AND CIRCLE ORIENTATION" out of the required viewing direction, as illustrated in the left part of the figure. However, when the required viewing direction is achieved, which is illustrated in the right part of the figure, this disappears synthetic leadership picture 41 , In addition, the synthetic effect image 42 an inverse of the text "align the cross and the circle" to a thumb-up sketch. In this embodiment, the overall synthetic guidance image 41 a limited guide field of view, which excludes the angles in the vicinity of the required viewing direction. The synthetic effect picture 42 consists of two parts, one of the figures with the thumb extended, corresponding to an effect field of view which only includes the angles near the required viewing direction, and one corresponding to the text with an effect field of view which excludes the angles in the vicinity of the required viewing direction.

In 17G is another embodiment of a device 1 illustrated for synthetic images. The synthetic leadership picture 41 is similar to before, with crosses 72 in an upper layer 48 at circles 71 in a lower layer 49 are aligned, as illustrated in the upper part of the figure. However, when the required viewing direction is achieved, which is illustrated in the lower part of the figure, the upper layer disappears 48 of the synthetic leadership picture 41 , Instead, the synthetic effect picture appears 42 on an effect layer 44 with a recognizable position among the circles 71 , The result for the view is thus that when the cross is aligned with the circles, the crosses "fall" through the circles and end in another deeper layer. A depth change is thus used as the "surprise effect". In this embodiment, the upper layer 48 of the synthetic leadership picture 41 a limited guide field of view, which excludes the angles in the vicinity of the required viewing direction. The synthetic effect picture 42 , which is also a pattern of crosses, has an effect field of view which instead only includes the angles near the required viewing direction.

In 17H is another embodiment of a device 1 illustrated for synthetic images. The synthetic leadership picture 41 includes a small filled square in an upper layer and a large empty square in a lower layer outside the required viewing direction. When the required viewing direction illustrated in the right part of the figure is reached, the synthetic guidance image becomes 41 with the synthetic effect picture 42 combined to represent a three-dimensional image of a stump of a pyramid. An abrupt change from two separate layers of two-dimensional figures to a full 3D image serves as the "surprise effect". In this embodiment, the synthetic guide image 41 no limited field of view, but is always present. The synthetic effect picture 42 has an effect field of view which includes only the angles near the required viewing direction.

The guiding and / or surprise effect can also be done in two or more steps. In 18 an embodiment is illustrated in which a synthetic guidance image 41 with circles and crosses outside the required viewing direction is visible. When the device 1 for synthetic images is tilted so that the crosses come closer to the center of the circle, creating a new part of the synthetic guidance image 41 , in this embodiment, a smaller circle. This smaller circle helps to fine-tune the tilt. When the required viewing direction is reached, the crosses disappear and instead a synthetic effect image appears 42 , in this embodiment, a pattern of stars.

In an alternative view, the small circles may be interpreted as a first part of a synthetic effect image. When the more precise viewing direction is achieved, the synthetic effect image becomes a star.

As one skilled in the art understands, the variations pertaining to the "surprise effect" may be made using any of the effects of the synthetic images known in the art. These effects can only be provided by a separate synthetic effect image or by a combination between the synthetic effect image and changes in the synthetic guidance image.

By using a combination of a synthetic guide image and a synthetic effect image, the use of a synthetic image device, e.g. As an authentication sign, simply regardless of the relative orientation of the focussing elements and the image objects.

In 19 FIG. 3 illustrates a flowchart of steps of an embodiment of an authentication method. The method of authenticating an object with a synthetic image device provided on a surface of the object begins in step 200 , In step 210 For example, a first synthetic guide image of the synthetic image device is observed in a viewing direction. The synthetic guide image has a first partial image and a second partial image. In step 220 For example, the synthetic image device is moved to change the viewing direction. This changing of the viewing direction causes the first field and the second field to become a predetermined relative one geometric relationship in relation to each other. In step 230 For example, an abrupt change in the appearance of a second synthetic effect image is observed as a sign of authenticity as it is moved to the predetermined relative geometric relationship. The process ends in step 299 ,

The various embodiments of the synthetic image devices illustrated above may be made by various methods generally known in the art. Hereinafter, a method of manufacturing a synthetic image device is illustrated, which method is particularly well suited to synthetic image devices of the type discussed above.

In one approach to one-piece synthetic images, as previously mentioned, non-identical fractionated image objects are provided in cells associated with a respective focusing element.

In 20A Fig. 3 illustrates a series of cells C from different parts of one embodiment of a synthetic image device. The cells comprise a first set of image objects that result in a first synthetic guidance image when placed in the proper position in front of an array of focusing elements. A first type of image objects 17A leads to a picture of crosses, while a second type of picture objects 17B leads to a picture from plus sign. As understood by those skilled in the art, image objects may be used for all of the various synthetic guide image embodiments presented above, and variations thereof.

The image of the crosses has a detectable height above the synthetic image device and the periodicity of the image objects 17A The crosses are slightly larger than the periodicity of cells C. Likewise, the image of the plus signs has a recognizable depth under the synthetic image device and the periodicity of the image objects 17B the plus sign is slightly smaller than the periodicity of the cells C. The positions of the image objects 17A . 17B within the cells C therefore varies between different cells, as can be seen in the figure. In the second cell from the left in the figure, the picture objects overlap 17A . 17B , This takes place at a certain first position 60 , This means that the synthetic-image device, when viewed from a direction that brings the focusing element across the cell, is the first position 60 and a picture with overlapping cross and plus sign can be seen. In the situation in the right part of the figure, a similar situation occurs. However, the first position is located 60 here near a cell border. In the present embodiment, a total of four such first position 60 to see. If a viewing direction is selected, that of any of these first sections 60 corresponds to, an image with overlapping cross / plus sign can be seen. It should be noted that in the present embodiment, there are more such first positions in each cell associated with overlapping situations in the cell above and below the illustrated cells, see 20B ,

In 20B are guide vision limitation areas 62 that is a first position 60 include, respectively illustrated. As seen in the second cell from the left, parts of the image objects become 17A . 17B located in the guide viewing area 62 should be present, removed. This corresponds to the fact that the image disappears when viewed from the direction of the first position 60 equivalent.

In 20C are impact vision areas 63 that is a first position 60 include, respectively illustrated. In this embodiment, the effect sighting areas are 63 the same as the guide view boundary areas 62 , The picture objects 17C that belong to a synthetic effect image, will be within the effect view area 63 provided. In the present embodiment, the image objects belong 17C to a synthetic effect image in the form of a letter "A". The parts of the image objects that come from the effect view bounding areas 63 are actually "removed," but are shown by dashed line in the figure for purposes of explanation. This corresponds to the fact that the image of "A" suddenly disappears when viewed from one of the directions, that of the first position 60 equivalent.

The full effect of the device for synthetic images with the cells 20C is that the patterns of crosses and plus signs are visible from most viewing directions in different relation to each other. If the viewing direction comes close to the required, the plus signs and crosses disappear and instead the letter " A ".

In providing a manufacturing process, a similar approach can be used in the 20A-C is specified. Image objects of a synthetic guidance image can be represented by a numerical representation. Likewise, image objects of a synthetic effect image can also be represented by a numerical representation. Then, defining an effect-view-bounding area that defines the position in a cell in which the synthetic guide image sub-images reach the required geometric relationship, the numerical representation of the synthetic-effect image image objects may be modified to be visible either inside or outside the effect-vision region. This modified representation of the image objects of the synthetic effect image can then be connected to the image objects of the synthetic guidance image, which may also be modified in or without a guide vision boundary region. This numerical representation of composite image objects can then be used by methods known per se to form an image layer.

21A illustrates a cell C a device for synthetic images. In this embodiment, the guide vision limitation area falls 62 with the effect view limitation area 63 together. The result is that the change of the synthetic guide image and the synthetic effect image occurs in the same viewing directions.

21B illustrates a cell C another device for synthetic images. In this embodiment, there is no guide view limiting area, and the synthetic guide image can therefore be perceived from all viewing directions. However, the effects view control area controls 63 still the appearance of the synthetic effect picture.

21C Figure 1 illustrates a cell C of another synthetic image device. In this embodiment, there is a guide view limitation area 62 and an effect vision area 63 , In this embodiment, the guide view limitation area is closed 62 the effects view area 63 on. The result is that, when the viewing direction comes closer to the required one, the synthetic guide image or at least a part thereof first disappears, and when the viewing direction changes further to the required viewing direction, the synthetic effect image appears. In an alternative, the effects view area closes 63 the guide view limitation area 62 which results in the synthetic effect image first appearing together with the synthetic guidance image, but as the viewing direction approaches the target, the synthetic guidance image, or at least a portion thereof, disappears.

21D illustrates a cell C another device for synthetic images. In this embodiment, the effect-view area is closed 63 the first position 60 but in an asymmetrical way. This means that the appearance / disappearance of the synthetic effect image is different depending on the direction in which the viewing angle is changed.

In the previous embodiments, the effect 63 ) and the management view area ( 62 ) in two dimensions. 21E illustrates a cell C another device for synthetic images. In this embodiment, the effects view area is 63 and the guidance visibility control area 62 instead limited in one dimension. This means that the first position 60 but in an asymmetrical way. The appearance / disappearance of the synthetic effect image and the disappearance of at least a portion of the synthetic guide image here depends only on the viewing angle component in the vertical direction (as defined in the figure). In various alternatives, one of the effect scope can be 63 and the guide view boundary area 62 be limited in two dimensions, while the other is limited in one dimension.

In many of the embodiments presented above, the effect-vision area is shown 63 and the guidance visibility control area 62 have the same symmetry as cell C. However, this is not absolutely necessary. In 20C are circular effect vision areas 63 and management visibility limits 62 within a hexagonal cell C illustrated. In 21E is a rectangular effect vision area 63 within a hexagonal cell C as another example of different symmetries.

In 21G Figure 1 illustrates a cell C of another synthetic image device. In this embodiment, there are two guide view boundary areas 62A , B. Outside the first guide viewing area 62A is a complete synthetic leadership picture to see. When the viewing direction is at a point between the first guide-view boundary area 62 A and the second guide-view area 62B corresponds, a first change of the synthetic guidance picture is to be seen. When the viewing direction of the first position 60 corresponds, the synthetic effect image appeared together with a second change in the synthetic guidance pattern. This embodiment may be used, for example, to generate the in 18 be described situation used.

This approach can be further developed to use animation features in the synthetic guidance image, see e.g. B. 16A-B , In 21H is the synthetic guidance image with five guide vision boundary areas 62A-E which results in a gradual change in the synthetic guidance image as the required viewing direction is approached.

In the above embodiments, hexagonal cells were used as examples. This can in many cases be a natural choice, especially if densely packed focusing element arrangements are used. However, depending on the application, all types of cell geometries can be used. Illustrated as non-limiting examples 21I a rhombic cell C and 21J illustrates a rectangular cell C that can be used together with all the different approaches presented above.

In an embodiment in which the ratio between the periodicity of the image objects of one synthetic guide image frame and the cell periodicity is equal to the ratio between the cell periodicity and the periodicity of image objects of another synthetic synthetic image field, the sub-images appear at height and depth, each separated at an equal distance from the plane of the synthetic image device, such as e.g. In 11 , In other words, a ratio of a periodicity of a first subset of a first set of image objects and a focussing order periodicity of the synthetic image device is equal to a ratio of the focussing order periodicity and a periodicity of a second subset of the first set of image objects. When the synthetic image device is tilted, the various sub-images apparently move in opposite directions and re-intersect when the point which the focusing elements are aiming has moved halfway through a cell distance. This leads to four first positions 60 in each cell, and also four effect-view-bounding areas in each cell, as in 22A illustrated.

In an approach that resembles the one used in the 13A-B however, it is necessary for the imaged dot of the cell to move an entire cell distance before a next coincident synthetic guide image can be achieved. In such a system is only a first position 60 in each cell C exists as in 22B illustrated.

In addition, the collapsing of the partial images of the synthetic guidance image occurs in an approach similar to the one used in the 12A-B is illustrated in different viewing directions for different parts of the synthetic image device. As in 22C For example, the effect level control areas may illustrate 63 Therefore, also be positioned in different areas, depending on where on the device 1 for synthetic images, the cell is located. This change of position within the cell may be provided in a gradual manner at the surface or in steps, which are part constant positions of the effect exposure control area 63 in different parts of the entire area of the device 1 for synthetic images.

The present approach, with a synthetic guide image and a synthetic effect image, makes alignment of the focussing elements and cells less sensitive. In 23A is a situation in which a cell C perfectly matches a focusing element 24 is aligned, illustrated from above in the upper part of the figure and in a lateral cross-sectional view in the lower part of the figure. The first position 60 In this example, it is designed to be positioned in the middle of cell C. The synthetic effect image is to be seen in such a situation when the synthetic image device is viewed from a perpendicular direction with respect to the main surface.

However, if the alignment is not perfect, as by 23B illustrated, the usability is not significantly affected. Even if the cell C and the focusing element are shifted, there is a well-defined direction in which the first position 60 in the cell through the focusing element 24 can be considered. Since the synthetic guidance image tells the viewer how to achieve this viewing direction, the switch to the synthetic effect image is easy to find regardless of the misalignment.

In 24 FIG. 3 is a flowchart illustrating steps of one embodiment of a method of manufacturing a synthetic image device. FIG. The process begins in step 300 , In step 310 A numeric representation of a first set of image objects is generated. The image objects are arranged in image cells to guide to at least one first synthetic guidance image when placed in a vicinity of a focal length of the focusing elements and viewed through a focusing element array. The synthetic guide image represents a first field and a second field, wherein changing a viewing direction, a relative geometric relationship is changed. A predetermined relative geometric relationship between the first sub-image and the second sub-image corresponds to image objects positioned at a first position in each image cell. In step 320 is defined as an effect view area. The effect view area includes the first position and an edge. In step 320 becomes one generated numerical representation of a second set of image objects. The second set of image objects is arranged to result in at least one second, synthetic effect image when placed in a vicinity of a focal length of the focusing elements and viewed by the focusing element array. In step 340 For example, the numerical representation of the second set of image objects is modified within or outside the effect exposure range to cause an abrupt change in the appearance of the synthetic effect image. In step 350 The numerical representation of the first set of image objects and the numerical representation of the second set of image objects are combined into a numerical representation of composite image objects. In step 360 For example, an image layer is formed according to the numerical representation of composite image objects. In step 370 a focusing element arrangement is formed. The image layer is disposed in a vicinity of a focal length of the focusing elements of the focusing element array.

In one embodiment, the first partial image and the second partial image are displayed at different recognizable depth or height.

In an embodiment, the method further comprises the further step 321 in which a guide view bounding area comprising the first position and an edge is defined. In step 341 becomes the numerical representation of the first set of image objects before the step 350 of joining within the guide visibility area.

In a further embodiment, the step comprises 341 modifying the numerical representation of the first set of image objects, modifying the numerical representation to correspond to removal of portions of the first set of image objects.

In a further embodiment, removing portions of the first set of image objects includes removing at least one of the first and second subpictures.

In one embodiment, the modification will be 341 numerical representation of the first set of image objects for cells only within a part of an overall image area of the synthetic image device.

In one embodiment, the modification will be 340 numerical representation of the second set of image objects for cells only within a part of the overall image area of the synthetic image device.

In one embodiment, the composite image objects within the effect-vision area result in a combined three-dimensional synthetic image.

In one embodiment, the first set of image objects comprises two subsets of image objects, each corresponding to a pattern layer. The pattern layers have a different periodicity, wherein the predetermined relative geometric relationship corresponds to a predetermined overlap relationship.

The manufacturing method thus provides a synthetic image device having an image layer formed according to a numerical representation of composite image objects and a focusing element array. The image layer is disposed in a vicinity of a focal length of the focusing elements of the focusing element array.

The numerical representation of the composite image objects is an association of a numerical representation of a first set of image objects and a numerical representation of a second set of image objects. The first set of image objects is arranged in image cells to guide to at least one first synthetic guidance image when placed in a vicinity of a focal length of the focusing elements and viewed through a focusing element array. The synthetic guide image represents a first field and a second field, wherein changing a viewing direction, a relative geometric relationship is changed. A predetermined relative geometric relationship between the first sub-image and the second sub-image corresponds to image objects positioned at a first position in each image cell. An effect view control area includes the first position and an edge.

The second set of image objects is arranged to result in at least one second, synthetic effect image when placed in a vicinity of a focal length of the focusing elements and viewed by the focusing element array. The numerical representation of the second set of image objects is modified within or outside the effect-vision area to cause an abrupt change in the appearance of the synthetic-effect image before it merges.

As already mentioned, animation techniques can advantageously be used in conjunction with the synthetic guidance image and / or or the synthetic effect image. In the following, various aspects of animation will be discussed which may be used in conjunction with the synthetic guidance image and / or the synthetic effect image. However, it is also possible to use these animation aspects in other types of applications that are not associated with interaction between synthetic leader and effect images.

When using various types of one-shot imaging techniques, there is no limit to repeated patterns or two-dimensional images. In addition, it is also possible to change the appearance of the synthetic image for different viewing directions. This allows you to display various types of animations or morph effects. One limitation of the prior art one-piece imaging techniques is that the animations and morphing techniques are limited to a single cell. As the viewing direction changes, the point in the cell from which the visual information is collected also changes. When this point reaches the cell boundary and continues in an adjacent cell, the typical result is a sudden reversal of the synthetic image into the synthetic image of the neighboring cell.

However, there are arrangements that at least partially remove such unwanted inversions.

Cells used to define the one-piece synthetic image are typically at the same distance as the array of focussing elements with which they are to interact. However, the shape and relative positioning may differ. 25A schematically illustrates an embodiment of the relationship between an array of focusing elements 24 and an array of cells C for the picture object. In this embodiment, the focusing elements 24 spherical lenses. The cells C instead got a rectangular shape. The picture objects inside the cell C are present with one or focusing elements 24 are mainly associated with this focus element. However, if there is significant misalignment or if the synthetic image device is viewed at a relatively shallow angle, the image objects may also be viewed through an adjacent focusing element. The change of the considered point between two adjacent cells often leads to a sudden reversal of the synthetic image.

In 25B is another embodiment of the relationship between an array of focusing elements 24 and an array of cells C for the picture object. In this embodiment, the cells are rectangular and have an aspect ratio of the cells C is larger than in a previous embodiment, with a larger extension in the lateral direction, as illustrated. This results in the cells comprising points that may physically be under an adjacent focusing element instead of the associated one. Likewise, there are points that are physically below the associated focussing element and belong to an adjacent cell instead. In such an approach, reversals of the synthetic image at the viewing angle occur less frequently when the synthetic image device is tilted laterally than when the synthetic image device is tilted up and down.

25C Figure 1 illustrates one embodiment of the relationship between an array of focusing elements 24 and an array of cells C for the image object, wherein the cells have a regular hexagonal shape. In this embodiment, however, misalignment occurs between the focusing element assembly and the cells C , This means that the image objects located in the center of the cell are seen by a viewer at a non-perpendicular angle with respect to the main surface of the synthetic image device.

In 26 Fig. 13 illustrates a series of cells C of an embodiment of a synthetic image device. The area of the cell is in five channels in this embodiment 80A - 80E divided. In each channel, image objects corresponding to a particular one-piece synthetic image are provided. In other words, a channel is part of a cell that includes image objects used to create a same synthetic image. The one-piece synthetic pictures, with the different channels 80A - 80E are different. The differences can be large, and in such cases, sudden abrupt changes in the synthetic image under consideration are perceived by a viewer when the synthetic image device is tilted. The differences may alternatively be small, at least relative to the adjacent channels. This enables synthetic images that are morphing when the device is tilted for synthetic images or other types of animation effects.

In 26 Three examples of synthetic images produced by image objects of the various channels are illustrated. The image objects within the channel 80A lead to a pattern of star-like objects 81A , The image objects within the channel 80C lead to a pattern of squares 81B , The image objects within the channel 80E lead to a pattern of circles 81C , When tilting the synthetic image device becomes a gradual change from the star-like objects 81A to the circles 81C perceived by a viewer. In addition, when the point from which the focusing element collects its information crosses the cell boundary and enters an adjacent cell, the same image objects are also displayed there, which means that there is no reversal of the synthetic image.

It may be difficult to design image objects that yield such gapless synthetic images in all directions, since there may be many relationships within the image that must be met. However, since the natural way to tilt a synthetic image device is either sideways or up and down and not in any intermediate direction, it is often sufficient to cause one-way through behavior of the synthetic image.

In 27A a few cells C of another embodiment are illustrated schematically. In this embodiment, the cell is in parallel strip-shaped channels 80A - 801 divided. Every channel 80A - 801 includes image objects that result in a synthetic image in cooperation with image objects of other cells when viewed through an array of focussing elements. The synthetic image associated with a channel is different from the synthetic image associated with an adjacent channel in the same cell C. The associated synthetic images of the present embodiment are schematically illustrated in a row below the cells.

It is believed that the device 1 for synthetic images with the cells viewed from one direction, from which the focusing elements become one point 84 in each cell select C from which image information is collected. Together the picture objects lead at these points 84 to a synthetic picture, which is a square 82A shows. This is in the lower left part of 27B illustrated. When the device 1 For synthetic images, if the image is tilted sideways to the right, the point from which the focussing element collects information moves to the right, as indicated by the arrow 83A in 27A illustrated. The resulting synthetic image on the device 1 for synthetic images shows a square with a rounded end 82B , This is in the lower middle part of 27B illustrated. Another tilt of the device 1 for synthetic images moves the point according to the arrow 83B in 27A and a circle 82C appears as the synthetic picture. This is in the lower right part of 27B illustrated. During lateral tilting, the synthetic image represents a gradual change or morphing of the image. Even if the lateral tilting is the point 84 from the intended cell and into an adjacent cell at the side, the complete morphing is still present.

However, if the device 1 for synthetic images from the situation in which a square 82A is shown tilting upwards, also moves the point 84 according to the arrow 83C upwards and therefore penetrates into an adjacent cell above the original cell. This leads to a sudden reversal of the square 82A in a circle 82C as in the upper left part of 27B illustrated.

As one skilled in the art understands, the device may 1 for synthetic images are rotated in any direction, so z. B. the morph direction corresponds to a tilt up and down, while the reverse direction is to the side.

27C and 27D illustrate another similar embodiment in which the synthetic images are three-dimensional bodies. A cube 82D turns over a partially rounded cube 82E in a morphing way to a ball 82F when the device 1 tilted sideways for synthetic images. However, there is a sudden reversal of the cube 82D to the ball 82F when the device 1 for synthetic images is tilted upwards.

When using three-dimensional synthetic images, it is particularly advantageous to have the morphing direction as tilting to the side. Since the three-dimensional perception is caused by the distance between the eyes to the observer, a gradual change of the synthetic image in the same direction, that is, facilitates. H. the direction between the eyes, the perception of a realistic three-dimensional impression, even during a morph process.

As an example, a synthetic image device has an image layer having image objects provided in a plurality of cells and a focusing element array having a plurality of focusing elements. Each cell is associated with a respective focusing element. The image layer is disposed in a vicinity of a focal length of the focusing elements.

Each cell is divided into a plurality of strip-shaped channels. The image objects of each channel, together with image objects of the corresponding channel of other cells, when viewed through the focusing element array, form a synthetic image. The synthetic image associated with a channel differs from the synthetic image associated with an adjacent channel in the same cell C. Preferably, the strip-shaped channels are straight and parallel.

Preferably, the synthetic image associated with the channel closest to an end of the cell in one direction on the striped channels is the same or at least almost the same as the synthetic image associated with the channel closest to the opposite end of the cell is associated. This results in a reversal-free transition across the cell boundary.

The possible variations of objects are endless. 28 schematically illustrates a series of arrows associated with strip-like channels, analogous to the previous figures. In one viewing direction, an arrow is to the right 82G is directed to see. By tilting the device 1 for synthetic images to the side of the arrow rotates z. B. to the position upwards 82H shows, and also completely to the left arrow 82I , An inclination in the vertical direction instead gives a reversal directly to the left arrow 82I ,

There are many ways to use Morphing to achieve a striking effect. In 29A is a series of synthetic images of a device 1 illustrated for synthetic images. Typically, the different images will be by tilting the device 1 for synthetic images in one direction at the striped channels, as discussed above. In a first direction, no synthetic picture is seen at all. By slightly tilting the device 1 for synthetic images, a pattern of dots appears. By further tilting, the dots develop into small stars that grow as they continue to tilt until the tips meet. A pattern of lines generating triangles in two directions is thereby created.

In an alternative embodiment, the images in 29A Have elements at different apparent height / depth. For example, every other star could be provided at a different altitude than the others. This then leads to a relative shift in tilting between the different altitudes.

Yet another similar embodiment is in 29B illustrated. Here are provided two sets of synthetic images morphing in opposite directions. If a sentence begins with an empty pattern, points and stars to a line pattern, the other sentence instead starts from the line pattern, over stars and dots to an empty pattern.

30 Figure 11 illustrates one embodiment of an animation using a combination of two interacting patterns. A pattern of circles 85 appears first. The circles enlarge and morph into windows 86 , Through the windows 86 You can see a pattern of letter "A" 87 at an apparent depth below the surface. The window 86 enlarge further and finally the pattern covers "A" 87 the entire picture.

This scenario is also achieved by using different channels within the cells. Preferably, strip-shaped channels are used. In each channel, image objects contribute to the construction of the combination of images. For this purpose, image objects associated with the pattern of "A" are removed somewhere outside the image objects associated with the window. It should be noted that the image appearing in the windows may take on any desired form in various embodiments; two-dimensional or three-dimensional, Moire-type or one-piece synthetic image. Of course, the shape of the "opening windows" may also differ in alternative embodiments.

It should be noted that strip-shaped channels can be used with any type of cell shapes. However, it is preferred if the strip-shaped channels are positioned substantially parallel to one of the main cell boundary sections.

31A illustrates a schematic illustration of an apparatus 1 for synthetic images, which is a combination of a two-dimensional and three-dimensional synthetic image. A pattern of two-dimensional hexagons 88 covers most of the surface. One of the hexagons, z. For example, the one that appears to be directly in front of the viewer each time it appears is replaced, or its formation is a hexagonal cup 89 finished with a recognizable under surface extension. The three-dimensional hexagonal cup 89 has a limited field of view, which through the associated hexagon 88 is determined. The top of the three-dimensional hexagonal shaped mug 89 falls with the two-dimensional hexagons 88 laterally as well as at recognizable height / depth together.

When the device 1 for synthetic images, the cup closes and, instead, another hexagon opens to form another cup, such as in FIG 31B ,

In a further embodiment this may further be with yet another synthetic image combined, as in 31C illustrated. The synthetic picture in the form of a hand 90 has a detectable height above the surface. By tilting the device 1 for synthetic images, so the hand 90 when a certain hexagon comes over, the hexagon opens and exposes the cup below. At the same time the hand disappears. The effect looks like the hand removes a lid over each hexagon. The hexagon pattern 88 and the hand 90 are seen as a composite synthetic guide image and the three-dimensional hexagonally shaped cup 89 then forms a synthetic effect image.

The above-described embodiments are to be considered as a few illustrative examples of the present invention. It will be understood by those skilled in the art that various modifications, combinations and alterations can be made to the embodiments without departing from the scope of the present invention. In particular, different partial solutions can be combined in other designs in the different embodiments, if this is technically possible. The scope of the present invention is defined by the appended claims.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 2015/034551 A [0007]

Claims (29)

Synthetic image device (1); full an image layer (10); and a focusing element assembly (20); wherein the image layer (10) is disposed in a vicinity of a focal length (f) of the focusing elements (22) of the focusing element array (20); wherein composite image objects (36) of the image layer (10) is an association of at least a first set (31) of image objects (12) and a second set (32) of image objects (12); wherein the first set (31) of image objects (12) is arranged to lead to at least one first synthetic guidance image (41) when placed in a vicinity of a focal length (f) of the focusing elements (22) and through the focusing element array (20) is considered; wherein the synthetic guide image (41) when viewed in a direction (d) moves from a set (D) of separate directions, a first partial image (46) and a second partial image (47), thereby becoming a predetermined one geometric relationship to be moved in relation to each other; wherein the second set (32) of image objects (12) is arranged to lead to at least one second synthetic effect image (42) within a limited effect field of view (52) of the synthetic effect image (42) when placed near a focal length (42). f) the focusing element (22) is placed and viewed through the focusing element assembly (20); wherein the limited effect field of view (52) of the synthetic effect image (42) is selected from one of: Including sighting directions only in an angular vicinity of one of the directions (d) of the set (D) of separate directions; and Viewing directions only in an angular proximity of one of the directions (d) of the set (D) excluding separate directions. Device for synthetic images after Claim 1 , characterized in that the first partial image (46) and the second partial image (47) are displayed at different recognizable depth or height. Device for synthetic images after Claim 1 or 2 characterized in that the synthetic guide image (41), when viewed in the direction (d), would represent the first partial image (46) and the second partial image (47) in the predetermined relative geometric relationship with respect to each other a limited guide field of view (51), if any, would be neglected by at least a portion of the synthetic guide image (41). Device for synthetic images after Claim 3 , characterized in that the guide field of view (51) is valid only for a part of the synthetic guide image (41). Device for synthetic images after Claim 4 , characterized in that a part of the synthetic guide image (41) for which the guide field of view (51) is valid comprises the first partial image (46). Device for synthetic images according to one of Claims 3 to 5 , characterized in that the guide field of view (51) is valid only for a part (P1) of an overall image area (A) of the synthetic image device (10). Device for synthetic images according to one of Claims 1 to 6 characterized in that the synthetic effect image (42) is restricted to be seen only in selected parts of the overall image area (A) of the synthetic image device (10). Device for synthetic images according to one of Claims 1 to 7 characterized in that the synthetic guide image (41) and the synthetic effect image (42) cooperate to form a combined synthetic image (45) within the effect field of view (52). Device for synthetic images according to one of Claims 1 to 8th characterized in that the synthetic guide image (41) comprises two pattern layers at different detectable height and / or depth, the predetermined relative geometric relationship to each other corresponding to a predetermined overlap relationship. Device for synthetic images after Claim 9 characterized in that an upper pattern layer of the two pattern layers has a detectable height which is in a vicinity of a recognizable depth of a lower pattern layer of the two pattern layers. Device for synthetic images after Claim 10 , characterized in that the upper pattern layer and the lower pattern layer have a same periodicity. Device for synthetic images after Claim 10 , characterized in that the upper pattern layer and the lower pattern layer have different periodicities. Device for synthetic images according to one of Claims 1 to 12 , characterized in that the synthetic effect image (42) replaces the first partial image (46) of the synthetic guidance image (41) within the effect field of view (52). Device for synthetic images according to one of Claims 1 to 13 , characterized in that the guide field of view (51) is a two-dimensional field of view. Device for synthetic images according to one of Claims 1 to 13 , characterized in that the guide field of view (51) is a one-dimensional field of view. A method of manufacturing a synthetic image device, comprising the steps of: Generating (310) a numerical representation of a first set of image objects (17A, 17B) arranged in image cells (C) to guide to at least one, first, synthetic guidance image (41) when in a vicinity of a focal length (f) the focusing element (22) is placed and viewed through a focusing element assembly (20); wherein the synthetic guide image (41) representing a first partial image (46) and a second partial image (47) changes a relative geometric relationship when changing a viewing direction; wherein a predetermined relative geometric relationship between the first sub-image (46) and the second sub-image (47) corresponds to image objects (12) positioned at a first position (60) in each image cell (C); - defining (320) an effect-view-limited area (63) comprising the first position (60) and an edge; Generating (330) a numerical representation of a second set of image objects (17C) arranged to guide to at least one second synthetic synthetic image (42) when placed in proximity to a focal length (f) of the focusing elements (22 ) and viewed through the focusing element assembly (20); Modifying (340) the numerical representation of the second set of image objects (17C) within or outside the effect-vision region (63) to result in an abrupt change in the appearance of the synthetic-effect image (42); - merging (350) the numerical representation of the first set of image objects (17A, 17B) and the numerical representation of the second set of image objects (17C) into a numerical representation of composite image objects (30); - forming (360) an image layer (10) according to the numerical representation of composite image objects (30); and - forming (370) a focusing element arrangement (20); wherein the image layer (10) is disposed in a vicinity of a focal length (f) of the focusing elements (22) of the focusing element array (20). Method according to Claim 16 , characterized in that the first partial image (46) and the second partial image (47) are displayed at different recognizable depth or height. Method according to Claim 16 or 17 characterized by the further step of: - defining (321) a guide vision boundary region (62) comprising the first position (60) and an edge; Modifying (341) the numerical representation of the first set of image objects (17A, 17B) within the guide vision boundary region (62) prior to the joining step (350). Method according to Claim 18 characterized in that the step of modifying (341) the numerical representation of the first set of image objects (17A, 17B) comprises modifying the numerical representation to correspond to removal of portions from the first set of image objects (7A, 17B). Method according to Claim 19 , characterized in that the removal of parts from the first set of image objects (7A, 17B) comprises removing the first partial image (46). Method according to Claim 19 or 20 , characterized in that the removal of parts from the first set of image objects (7A, 17B) comprises the removal of the second partial image (47). Method according to one of Claims 18 to 21 characterized in that modifying (341) the numerical representation of the first set of image objects (7A, 17B) for cells in only a part (P) of an entire image area (A) of the synthetic image device (10). Method according to one of Claims 16 to 22 characterized in that modifying (340) the numerical representation of the second set of image objects (17C) for cells in only a part (P) of the overall image area (A) of the synthetic image device (10). Method according to one of Claims 16 to 23 , characterized in that the composite image objects (30) within the effect vision area (63) result in a combined three-dimensional synthetic image. Method according to one of Claims 16 to 24 characterized in that said first set of image objects (17A, 17B) comprises two subsets of image objects, each corresponding to a pattern layer, said pattern layers having a different periodicity, said predetermined relative geometric relationship corresponding to a predetermined intersecting relationship. Method according to Claim 25 characterized in that a ratio of a periodicity of the first subset and a periodicity of the focusing arrangement of the synthetic image device (10) is equal to a ratio of the periodicity of the focusing arrangement and a periodicity of the second subset. Method according to one of Claims 16 to 26 , characterized in that at least one of the effect vision area (63) and the guide screen area (62) is bounded in two dimensions. Method according to one of Claims 16 to 26 , characterized in that at least one of the effect view limiting area (63) and the guide view boundary area (62) is limited in one dimension. A method of authenticating an object with a synthetic image device provided on a surface of the object, the method comprising: - observing a first synthetic guidance image (41) of the synthetic image device in a viewing direction, the synthetic guidance image (41) having a first partial image (46) and a second partial image (47) of differing apparent depth or height; Moving the synthetic image device to change the viewing direction to cause the first sub-image (46) and the second sub-image to move in a predetermined relative geometric relationship with respect to each other; - Observing an abrupt change in the appearance of a second synthetic effect image (42) as it is moved to the predetermined relative geometric relationship as a sign of authenticity.

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