WO2018001557A1

WO2018001557A1 - Method and device for displaying information on an after-glowing layer

Info

Publication number: WO2018001557A1
Application number: PCT/EP2017/000747
Authority: WO
Inventors: Günter De Rosa
Original assignee: Schmidleitner, Veit
Priority date: 2016-06-27
Filing date: 2017-06-27
Publication date: 2018-01-04

Abstract

The invention relates to a method for displaying images (2), signs, texts, or pieces of information, wherein an after-glowing stratum (3) and/or layer is irradiated by means of at least one light source (4) during an exposure time, wherein the after-glowing stratum (3) and/or layer is stimulated to afterglow by the light source (4), is characterized, with respect to the problem of optically conveying as many different images, signs, texts, or pieces of information as possible with an existing device, in that, from a plurality of regions (5), zones, or points of the stratum (3) and/or layer that are capable of afterglow, specific regions (6), zones, or points are selected for afterglow by the light source (4) in such a way that an image (2), a sign, a text, or a piece of information is temporarily displayed by means of the afterglow. The invention further relates to a device (1) for performing the method, which device has a holding apparatus for the light source (4).

Description

P a te n t a n m e l d u n g

Method and device for reproducing information

on a luminescent layer

The invention relates to a method and a device for reproducing images, characters, texts or information according to the preambles of claims 1 and 11.

From the utility model DE 297 19 393 U1 a light-emitting identification plate is already known. There it is described that it is possible to apply a layer to a metal carrier plate which can be activated for afterglow. Activating the layer for afterglow is done by light irradiation. If the light is interrupted, the layer lights up for a little over 340 minutes. DE 297 19 393 U1 discloses concretely formed luminescent symbol fields which

for example, can represent a fire extinguisher.

CONFIRMATION COPY Furthermore, it is known from DE 197 00 310 A1 to paint floors, stairs, walls or ceilings with luminous paints. This document shows in particular translucent luminous substances based on

Silicones that can be crystal clear. Specifically, DE 197 00 310 A1 teaches to introduce recesses into existing surfaces and to fill them with a luminous substance. Thus, a warning or reference element is integrated later. From DE 100 48 812 A1, a method is known in which a lettering is applied as a marker on luminescent substances. The lettering is inscribed by means of a laser, the laser light bleaching luminescent pigments. When exposed to UV light, the lettering then only lights up very slightly or with a different color than the area surrounding it.

The devices known from the prior art are concretely designed and defined with regard to the information to be transmitted. A change in the information to be transmitted is only complicated by a transformation or other manufacturing method of such a device feasible.

The invention is therefore based on the object as many as possible

different pictures, characters, texts or information with one

optically transmit existing device.

The present invention achieves the aforementioned object by the features of claims 1 and 11. In a method according to the invention for the reproduction of images, characters, texts or information, a luminescent layer and / or layer is irradiated with at least one light source during a contact time, wherein the luminescent layer and / or position by the light source for

Afterglow is stimulated.

By means of the light source, concrete areas, zones or points are selected for afterglow from a large number of regions, zones or points of the layer and / or layer that are capable of afterglow, such that a persistent image, a sign, a text or an image is created by the afterglow

Information is reproduced.

According to the invention, it has been recognized that as many different images, characters, texts or information as possible can be visually transmitted with an existing device if they are temporarily displayed on a luminescent layer or layer.

An existing device does not have to be retrofitted in a complex manner in order to convey different information. It is sufficient to light on the layer or layer during a suitable exposure time

irradiate.

The light irradiated onto the layer excites a luminescent substance in or on the layer or a luminescent substance in a position such that the layer or layer reproduces the incident light information or parts thereof in a characteristic way for them, possibly changed color.

In this respect, light irradiated by the light source selects areas, zones or points by specifying only those areas, zones or points Afterglow stimulates. Other areas, zones or points are not stimulated by the light to glow, although they would be stimulated.

In that regard are very many different images, characters, texts or

Information with an existing device can be transmitted visually, without the device, in particular their layer or position, even constructive change.

By a relatively long persistence time energy can be saved, since during this no further light sources are necessary. Furthermore, no electrical wires, connectors and the like are required to realize a luminous reproduction of images, characters, texts or information.

By the light source, an original image, an original character, an original text and / or an original information could be irradiated, projected and / or written onto the layer and / or layer, wherein the layer and / or layer during a persistence time instead of the original image a picture corresponding to this one, instead of the original one with a corresponding character, instead of the original one with this one

Corresponding text and / or instead of the original information a corresponding with this information is temporarily reproduced or will be. The layer or layer gives the original in one for her

characteristically, therefore, the reproduction of the layer or layer characteristically corresponds to the original. It is easily possible to create or procure originals, for example

Databases, and these quickly and easily, possibly color or otherwise changed, on a luminescent layer or in or on a situation play. Since the playback is only temporary, For example, original data can be quickly updated and replayed in the manner previously described.

It is also possible to show secret information only briefly. The information remains hidden after expiration of the persistence time.

Against this background, a screen could be used as the light source, which is placed on the layer and / or layer during a contact time or kept at a beam distance to this. By means of a screen or display can be original images, original texts and other complex

Structures or information are transmitted quickly.

It could be the screen of a cellphone, especially one

Smartphones, or a tablet can be used. With mobile phones or tablets can quickly create original images or original texts and

Original images are loaded from networks.

The light source could be a projector. projectors,

In particular projectors, photo projectors, slide projectors and video projectors can project very well original images on the layer or position and thus radiate light on them. Against this background, it is concretely conceivable that a sequence of individual original images is irradiated, whereby the corresponding images overlap due to the afterglow effect and gradually disappear again gradually. This allows

Evolution processes are well visualized.

The light source could be manually moved by a user at one or more beam distances in front of the layer and / or layer. It is conceivable that the user uses a flashlight as a light source, a light bulb a laser pointer, a light emitting diode (LED), a plasma light source, a liquid crystal display (LCD) or a retina display. Other Light sources that are manually or manually movable can also be used.

A flashlight or light pen for use as a light source could comprise or be connected to or connectable to an attachment or an optical fiber, the attachment or optical fiber being intended to comprise an image, a character, a text or an information to create the layer and / or layer.

The essay could concretely be releasably latched with the flashlight or the light pen again. The essay could be designed as a template with slots, patterns or calligraphic symbols. It is also conceivable that the attachment carries original images that can be projected onto the layer and / or layer as luminescent images by the flashlight or the light pen.

With an optical fiber, very defined lines can be drawn. An optical fiber or an optical fiber strand can be used in the manner of a brush.

The user can paint, draw or write on and / or in the layer with light. The user can paint, draw or write on and / or in the position with light.

Against this background, at least one template could be used to highlight the specific areas, zones or points for afterglow

by allowing the template to expose the specific areas, zones, or points for irradiation, and to cover others of the plurality of areas, zones, or points capable of afterglow. By means of a template can be easily and quickly created prefabricated structures or images. It can several templates are provided from which the user can then select appropriate.

Against this background, it is concretely conceivable that persons of the real life and / or the literature and film industry, for example action figures, on the shift and / or situation are depicted with a luminescent image by means of a template or a projector. This can save paper for posters or pictures.

It is also conceivable that a technical drawing, a route description, an instruction table or a playing field of a parlor game or a sport on the layer and / or position are imaged luminescent by means of a template or a projector. This also saves paper. Furthermore, energy can be saved, namely the fact that the layer and / or layer is irradiated with light only at intervals when the afterglow of the information on the layer and / or layer is no longer clearly visible.

At least one light-transparent and / or refractive medium could be positioned between the light source and the specific areas, zones or points in order to direct this light to the specific areas, zones or points. Translucent media can direct light filtered or unfiltered on the layer or layer or pass. For example, certain wavelengths and thus colors can be filtered out so that false-color or alienated images can be generated.

Refractive media can create geometrically complex structures on the layer or layer.

Against this background, a liquid could be used as the light-transparent and / or refractive medium. Liquids are easy in Containers ready. Furthermore, by simply choosing a liquid level in a container, the optical path that the light must travel before it falls onto the layer or layer can be determined.

It is particularly preferred to use water as the liquid. Water is harmless to health and can be easily provided. Water can be provided as a spray through nozzles, with the light passing through the spray. Water can also be applied to the layer or layer directly as a drop or pool of water.

As a light transparent and / or refractive medium, a glass could be used. Glasses, especially kitchen glasses, are readily available and can be used to create complex geometric structures on the sheet or sheet.

The object mentioned above is also achieved by a device for

Playback of images, characters, texts or information solved, which comprises a luminescent layer and / or layer, which is irradiated with at least one light source during a contact time, wherein the

luminescent layer and / or position by the light source for

Afterglow is excitable.

In this device, a holding device for the light source is provided so that by the light source from a variety of capable of afterglow areas, zones or points of the layer and / or position concrete areas, zones or points are selected for afterglow, that temporarily by the afterglow a picture, a character, a text or a

Information is reproducible. The holding device holds the light source according to the invention during the

Exposure time at a suitable beam spacing relative to the layer and / or layer.

In this device is at the same time or alternatively a template for the

Provided light source, so that by the template and the light source of a variety of capable of afterglow areas, zones or points of the layer and / or position concrete areas, zones or points are selected for afterglow that temporarily by the afterglow an image, a sign , a text or information is reproducible.

According to the invention, the stencil transmits only part of the light of the light source during the exposure time to the layer and / or layer. With stencils can very easily many different pictures, characters, texts or

Information transmitted visually with an existing device.

In this device, additionally or alternatively, a light-conducting and / or refractive medium for the light source is provided so that concrete areas, zones or Points are selected for afterglow such that the afterglow temporarily a picture, a character, a text or a

Information is reproducible.

According to the invention, the medium transmits the light of the light source to the layer and / or layer during the exposure time and breaks and / or

alienates the light. With such media very many can

different pictures, characters, texts or information with one

existing device to be transmitted optically. The holding device could hold a mobile phone, in particular a smartphone, or a tablet at a beam distance to the layer and / or position. With a mobile phone or tablet, an original image can be blasted onto the layer and / or layer to temporarily display an image as part of a panel.

Against this background, the holding device could have resilient retaining fingers. The holding fingers press the mobile phone or tablet during a contact time against the layer and / or position. Once the exposure time has elapsed, the mobile phone or tablet can be removed again and the layer or position reproduces an image.

The luminescent layer and / or layer could be part of a board or designed as such. A blackboard can very well be hung or set up in rooms and used for entertainment or teaching purposes.

Against this background, it is concretely conceivable that the device is used in the manner of a board in a room, in particular a children's room, in order to temporarily present a picture to a person, in particular a child. The picture can be used for educational purposes, but also as a sleep aid.

The luminescent layer and / or layer could be part of a pad or be formed as such. A ped can be configured as a rigid body, as a rollable body, as a drapable, in particular textile, body and / or attachable to other objects body. The geometric shape of the pad is freely selectable, with a rectangular shape is preferred.

The luminescent layer and / or layer or the board or the pad preferably has a dimension of DIN A4. As a result, the layer, position, board or the Päd without problems in usual briefcases, folders or folders can be recorded.

The layer and / or layer could be colored, preferably green. A green layer and / or layer will glow for a very long time. It is also conceivable, however, to make the layer and / or layer blue.

A template could be designed as an attachment for the light source, which is detachably or non-detachably connected or connected to the light source.

This allows a stencil to be easily or temporarily connected to a flashlight or similar light source. An overlay template may be mounted on a variety of existing light sources to use these light sources to create images or structures on the layer or layer.

A luminescent layer or luminescent layer described here can luminesce due to luminescence, fluorescence and / or phosphorescence effects.

A luminescent layer in the sense of this description therefore includes any phosphorescent, luminescent and / or fluorescent layer which can be excited to emit light by the irradiation of light.

A luminescent position in the sense of this description also encompasses any phosphorescent, luminescent and / or fluorescent layer which can be induced to emit light by the irradiation of light.

In particular, transparent or colored layers, which have in their interior substances that can be excited to glow, should be covered by the term location. The situation can be made of a plastic or of a Be made of glass. The plastic or glass may be transparent and / or colored. The layer contains a substance that luminesces when it is irradiated with light. The layer may be applied to any base that is itself

coating, laminating or painting. The substance is therefore preferably added in a lacquer or formed as a lacquer. The paint is preferably formed as a phosphorescent paint. By way of example only should be noted at this point that as a paint for

Making the layer and / or layer a "glow in the dark" paint can be used.

Preferably, a layer or layer with a phosphorescent substance is used.

The layer may be formed as a continuous or discontinuous structure. The layer or layer may also contain pigments and / or be self-luminous.

The layer and / or layer could be dismantled and reassembled non-destructively into several identical or different individual parts.

This makes it possible to produce an image or other information on the layer and / or layer, to disassemble the layer and / or layer into their individual parts and within a predetermined time, namely in particular the persistence time, the layer and / or position Puzzling the puzzle back to its original state. The assembly of the items in the way that each of the items back in its original Position relative to another item, can be done by restoring the image or information. So a kind of light puzzle is possible. With such a light puzzle that can

Memory of a person to be tested under time pressure.

In the drawing show

Fig. 1 in the upper view is a schematic representation of a

Device which comprises a luminescent layer on which an original image is projected by means of a light source designed as a projector, and in the lower view the device on which a corresponding image to the original image during a persistence time temporarily in a characteristic manner

even if the projector is turned off or removed,

2 shows a schematic illustration of a panel-type device which comprises a luminescent layer onto which an original image is irradiated by means of the screen or display of a mobile telephone, the mobile telephone being held in a holding device of the device,

Fig. 3 is a schematic view showing that a light source is manually moved to paint or write with light.

4 is a schematic view illustrating that a light source is connected to an attachment in the form of a template for painting with light; 5 is a schematic view illustrating that a liquid is provided through which the light from the light source passes, thus creating complex structures.

Fig. 6 is a schematic view of a light pen, which is an optical fiber for

Drawing has, and

Fig. 7 shows a layer which in several identical or different

Items can be dismantled and reassembled non-destructively.

1 shows a method 1 for reproducing pictures 2, characters, texts or information by means of a device 1, in which a

afterglowing layer 3 is irradiated with at least one light source 4 during a contact time, wherein the luminescent layer 3 through the

Light source 4 is excited to afterglow.

By means of the light source 4, concrete areas 6, zones or points are selected for afterglow from a large number of areas 5, zones or points of the layer 3 capable of afterglow, such that an image 2 is temporarily displayed by the afterglow.

By the light source 4, an original image 7 is projected onto the layer 3, wherein from the layer 3 during a persistence instead of the original image 7, a corresponding image 2 is temporarily reproduced.

As the light source 4, a projector is used.

Fig. 2 shows a device 1 'for carrying out a method of the type described above. Fig. 2 shows that in a method of the type described above, as

Light source 4 'is used a screen which is placed on the layer 3' during a contact time and held at a beam distance to this. It uses the screen of a mobile phone.

2 shows a device 1 'for the reproduction of images 2' in this respect,

Signs, texts or information comprising a luminescent layer 3 'which can be irradiated with at least one light source 4' during a contact time, wherein the luminescent layer 3 'can be excited by the light source 4' for afterglow.

A holding device 8 'for the light source 4' is provided, so that specific regions 6 ', zones or points for afterglow can be selected by the light source 4' from a plurality of regions 5 'capable of afterglow, zones or points of the layer 3' in that a picture 2 'is temporarily reproducible by the afterglow.

The holding device 8 'holds a mobile phone in a very small

Beam distance to the layer 3 '. The holding device 8 'has four resilient

Holding finger 9 'on. The beam distance can also be the value 0 mm when the screen and / or the mobile phone rests directly on the layer 3 '.

The luminescent layer 3 'is part of a panel.

By the light source 4 ', an original image 7' is irradiated onto the layer 3 ', wherein of the layer 3' during a persistence time instead of

Original picture 7 'with this corresponding picture 2' is temporarily reproduced.

3 schematically shows a method for reproducing texts 0, in which a luminescent layer 3 with at least one light source 4 " is irradiated during an exposure time, wherein the luminescent layer 3 is excited by the light source 4 "for afterglow.

By means of the light source 4 ", concrete areas 6", zones or points are selected for afterglow from a large number of areas 5, zones or points of the layer 3 capable of afterglow, such that a text 10 is temporarily reproduced by the afterglow.

By the light source 4 "is manually written with light on the layer 3, wherein of the layer 3 during a persistence time a text 10th

is temporarily reproduced. The text 10, but also manually painted pictures, signs or other information, can show so-called air-brush effects. The light source 4 "is manually moved by a user in one or more beam distances in front of the layer 3.

In this respect, FIG. 3 shows a device 1 for reproducing texts 10, comprising an afterglowing layer 3 which can be irradiated with at least one light source 4 "during a contact time, wherein the

The luminescent layer 3 is part of a panel.

Fig. 4 schematically shows a method in which a template 11 is used to select the concrete areas 6 ", zones or points for afterglow by the template 11 exposing the concrete areas 6", zones or spots for irradiation and others of the plurality covers areas 5, zones or points capable of afterglow. In that regard, Fig. 4 also shows a device in which the template 1 as an attachment for the light source 4 "is formed, which is releasably or permanently connected to the light source 4".

Preferably, the light source 4 "is designed as a flashlight, which carries the essay.

5 schematically shows a method in which at least one light-transparent and light-refracting medium 12 is positioned between the light source 4 "and the specific regions 6", zones or points, in order to use this light to access the specific regions 6 ", zones or points to steer.

As a light-transparent and refractive medium 12, a liquid, namely water, is used.

Fig. 6 shows a schematic view of a light pen 4 "', a

Optical fiber 13, with which on the layer 3 can be drawn. With the optical fiber 13, specific areas 6 ", zones or points for afterglow can be selected very defined.

FIG. 7 shows a layer 3 which can be dismantled and reassembled non-destructively into a plurality of identical or different individual parts 3a.

An image 2 produced with an attachment or a projector can be reassembled in the manner of a puzzle after the layer 3 has been disassembled into its individual parts 3a. The individual parts 3a may be locked together or magnetically connected.

One or more of the following mobile phones or smartphones may be used to practice the invention by using this its screen page is layered or sufficiently close to the layer: iPhone 4, iPhone 4s, iPhone 5, iPhone 5s, iPhone 5c, iPhone 6, iPhone 6s, iPhone 6 Plus, iPhone 6s Plus, iPhone SE, iPhone 7, iPhone Samsung Galaxy S3 Plus, Samsung Galaxy Note 2, Samsung Galaxy S4, S5, S7, S6, S5 (Edge and Plus models).

One or more of the following tablets may be used to practice the invention by placing it with its screen face on top of a layer or approaching the layer sufficiently close up: iPad / Samsung, iPad (I st Generation), iPad Mini, iPad Mini IPad Mini 3, iPad Mini 4, iPad Pro 12.9 Inch (I st Generation), iPad Pro 9.7 Inch (Is Generation), Päd Pro 12.9 Inch (2nd Generation), iPad Pro 10.5 Inch (2nd Generation), Samsung Galaxy Tab A (2016) T580N, Samsung Galaxy Tab S3, Samsung Galaxy Tab S2.

One or more of the following laptops may be used to practice the invention by placing it with its screen on a layer or approximating it sufficiently close to the layer:

Macbook / MacBook Pro, MacBook (2008), MacBook Pro 15 ", 17" (2008), MacBook Pro with Retina 2012 (3rd generation), MacBook with Retina display (3rd Gen) (Mid 2014), MacBook with Touch Bar (4th (13 ", 15") (June 5, 2017), Including iMac Retina (4k, 5k Display)

One or more of the following paints or inks may be used to make a layer and thus to practice the invention: Glow-in-the-Dark Color (Phosphorescence), Art 'N Glow - Glow In The Dark Pigment Powder - 12g - Neutral And Fluorescent Colors (Neutral Green), GloMania - 6 Color Daytime Visible Glow In The Dark Paint HALF OZ pots, UV Reactive, luminous, glowing, Glominex AT955 Ultra Glow in the Dark Paint - Assorted Colors (1/2 Fluid Ounces) - 5ct.

The light emitted by mobile phones, in particular smartphones, tablets or laptops, is surprisingly suitable for imaging photos, pictures, drawings or other illustrations in detail on the layer.

The brightness of the emitted light can be set on the device side and selected appropriately. This light is preferably HEV light, namely blue-violet, visible light. The wavelengths of this light are around 430 nanometers.

Claims

claims

Method for reproducing images (2, 2 '), characters, texts (10) or information in which a luminescent layer (3, 3') and / or layer with at least one light source (4, 4 ', 4 ") during an exposure time is irradiated, wherein the luminescent layer (3, 3 ') and / or position is excited by the light source (4, 4', 4 ") to glow,

characterized in that

by the light source (4, 4 ', 4 ") of a plurality of areas (5, 5') capable of afterglow, zones or points of the layer (3, 3 ') and / or position of concrete areas (6, 6', 6 "), zones or dots are selected for afterglow such that the afterglow temporarily reproduces an image (2, 2 '), a character, a text (10) or information.

A method according to claim 1, characterized in that by the light source (4, 4 ', 4 ") an original image (7, 7'), an original character, an original text and / or original information on the layer (3, 3 ') and or layer is blasted, projected and / or written, whereby of the layer (3, 3 ') and / or layer during a persistence time instead of the original image (7, 7') a corresponding image (2, 2 '), instead of the original one with this corresponding

Character, instead of the original text with this corresponding text (10) and / or instead of the original information, a corresponding with this information is temporarily reproduced.

A method according to claim 1 or 2, characterized in that a screen is used as the light source (4 '), during a Exposure time is applied to the layer (3 ') and / or layer or kept at a beam distance to this.

4. The method according to claim 3, characterized in that the

Screen of a mobile phone or a tablet or a laptop is used.

5. The method according to any one of the preceding claims, characterized

in that a projector is used as the light source (4).

6. The method according to any one of the preceding claims, characterized

characterized in that the light source (4 ") is manually moved by a user in one or more beam distances in front of the layer (3) and / or layer.

7. The method according to any one of the preceding claims, characterized

characterized in that at least one template (11) is used to select the concrete areas (6 "), zones or points for afterglow by the template (11) releasing the concrete areas (6"), zones or points for irradiation and others covering the plurality of afterglow areas (5), zones or points.

8. The method according to any one of the preceding claims, characterized

characterized in that at least one light-transparent and / or refractive medium (12) is positioned between the light source (4 ") and the specific areas (6"), zones or points in order to focus on the specific areas (6 "), zones by means of this light or points to direct.

9. The method according to claim 8, characterized in that as

light-transparent and / or refractive medium (12) a

Liquid is used. Method according to claim 8 or 9, characterized in that a glass is used as the light-transparent and / or refractive medium (12).

11. Device (1, 1 ') for reproducing images (2, 2'), characters, texts or information, comprising a luminescent layer (3, 3 ') and / or layer, which is connected to at least one light source (4, 4 ', 4 ") can be irradiated during a contact time, wherein the luminescent layer (3, 3') and / or position can be excited by the light source (4, 4 ', 4") for afterglow, characterized in that a template (11 ) and / or a light-transparent and / or refractive medium (12) and / or a holding device (8 ') for the light source (4, 4', 4 ") is provided so that through the template (11) and / or the medium (12) and / or the light source (4, 4 ', 4 ") of a plurality of areas (5, 5') capable of afterglow, zones or points of the layer (3, 3 ') and / or layer of concrete areas ( 6 ', 6 "), zones or points are selectable for afterglow, that by the afterglow

temporarily a picture (2, 2 '), a character, a text or a

Information is reproducible.

12. The device according to claim 11, characterized in that the

Holding device (8 ') a mobile phone or a tablet in one

Beam distance to the layer (3, 3 ') and / or location holds

13. The apparatus of claim 11 or 12, characterized in that the holding device (8 ') has resilient retaining fingers (9').

14. Device according to one of claims 11 to 13, characterized

in that the luminescent layer (3, 3 ') and / or layer Is part of a tablet or a pad or designed as such or as such.

Device according to one of claims 11 to 14, characterized

in that the template (11) is designed as an attachment for the light source (4 "), which can be detachably or non-detachably connected to the light source (4").

A flashlight or light pen (4 "') for use as a light source in a device according to any one of claims 11 to 15 or in a method according to any one of claims 1 to 10, wherein the flashlight or light pen (4"') comprises a cap or an optical fiber (13) or is connected or connectable to such or such, and wherein the attachment or the optical fiber (13) is intended to have an image (2, 2 '), a character, a text (10) or information the layer (3, 3 ') and / or to create location.

Layer (3, 3 ') and / or layer for use in a device according to one of Claims 11 to 15 or in a method according to one of Claims 1 to 10, which can be dismantled and put back together non-destructively into several identical or different individual parts (3a) is.

Set for carrying out a method according to one of claims 1 to 10 and / or for producing a device according to one of the

Claims 11 to 5, comprising a layer (3, 3 ') and / or position and / or a light source (4, 4', 4 ") and / or an attachment for the

Light source (4, 4 ', 4 ") and / or an optical fiber (13) for the light source.