RU183810U1 - Device for creating dynamic holographic images in space - Google Patents

Abstract

The utility model relates to the field of advertising and information technology. The device includes two laser projectors, a light source, a block of holographic plates. The holographic plate consists of two parts. The light source is connected to two laser projectors through an optical splitter and contains controlled drives. The block of holographic plates is a multilayer optically transparent liquid crystal matrix consisting of individual optically transparent layers. A separate layer of an optically transparent liquid crystal matrix includes two outer optically transparent plates, between which capillary channels are placed with a solution of optically transparent electrolyte having the same optical conductivity as external optically transparent plates connected to external current leads and point liquid crystal segments of a separate layer of optical transparent liquid crystal matrix. A thin film of metamaterial with a negative refractive index equal to the refractive index of the outer optical plate of a separate layer of an optically transparent liquid crystal matrix is deposited on the front surfaces of each individual layer of an optically transparent liquid crystal matrix on its two optical plates. 3 of FIG.

Description

The utility model relates to the field of advertising and information technologies, including in the architectural environment, namely, devices for projecting information in space using objects of the architectural environment.

A device for displaying information is known, which is a panel with an information surface, consisting of a set of modules, each of which is made in the form of a spatial rigid frame in the form of a rectangular parallelepiped, one of whose faces, which is an integral part of the information surface, is made in the form of a lightproof panel with a round hole. In addition, each of the modules contains a hollow cylinder made of opaque material made with the possibility of changing the position relative to the opaque panel, in one of which one of the cylinder bases is in the plane of the opaque panel, closing the round hole, in the other, it extends beyond the opaque panel through the round hole with the formation of a shadow from the protruding part of the cylinder, providing the formation of an image on the information surface of the scoreboard (see RF patent No. 102137, IPC G09F 19/00).

However, this device provides a demonstration of a limited amount of information, requires a blank plane to place the device on it, not mobile, depending on weather conditions and time of day.

A well-known device declared by Dimension Technologies for demonstrating stereoscopic images is the 2015XLS stereoscopic LCD monitor, with which the developers tried to create the illusion of a three-dimensional image without using traditional individual means of observing the stereo effect. In this monitor, behind the LCD screen, there is a special backlight and optics that create alternating columns of pixels (dots), visible by the right and left eye. The optical system displays the left and right frames of a stereo pair on alternating columns of pixels on an LCD screen. The left image is displayed on odd columns, and the right image is displayed on even columns. Both pairs are shown at the same time and are separated by the channels of vision of the right and left eye. This is achieved thanks to a special backlight located behind the LCD screen. Using light from small, strong sources, the backlight optically generates a grating of very thin, bright, evenly spaced vertical light lines. These lines are precisely located relative to the columns of pixels. Since parallax is characteristic of our binocular vision, the left eye sees these lines through the odd columns on the LCD, and the right eye through the even ones (Parallax Illumination technology) (see the website: http://ixbt.stack.net/ ^~ 3dstyle).

However, a stereoscopic image formed using the device described above can only be observed on a special screen.

A device for demonstrating stereoscopic images is also known, in which the task of demonstrating stereoscopic images is achieved by alternately and sequentially displayed on a common screen frames separated for viewing by the left and right eyes of the observer using an optical system including a uniform polarizer, a liquid crystal (LCD) cell as an optically active element with the function of changing the polarizing direction by 90 degrees, and an image analyzer formed by an LCD screen b without a polarizing filter, the glass substrates of which are made in the form of adjacent to each other horizontally alternating strips of polarizers with mutually orthogonal orientation of the plane of polarization (patent US 6348957, 02.19.2002).

The specified device has the following disadvantages:

- due to the sequential and sequential output of frames for the right and left eyes, the effect of “flickering” of the displayed stereo image is observed, therefore, to reduce this effect, the computer’s video system has increased requirements for the frequency of image regeneration, which leads to unjustified costs of machine resources;

- to output a static computer stereoscopic image, continuous cyclic output of the first right frame, then the left one is required, which forces the computer video system to continuously process large volumes of unchanging information;

- to view the stereo images of the observer, it is necessary to equip with special glasses, which is a certain inconvenience for him and reduces the effect of presence in the plot being demonstrated, and in addition, the stereoscopic image can be observed only on a special screen.

A laser projector is also known, which includes acousto-optical deflectors for independent element-wise and discrete positioning of laser beams of three primary colors into laser image elements in the observation plane in accordance with information about the original graphic computer image converted into control electric signals and a device for combining laser images of three primary colors in the observation plane, and the source of multicolor coherent radiation contains three solid laser with independent pump sources that generate three main wavelengths - red, green and blue (patent application No. 95116020, IPC H04N 9/31).

The disadvantage of this device is the need to create a plane for projecting information, and also it lacks the ability to create a three-dimensional image.

A device for displaying advertising is also known. A virtual image is created in mid-air through the intersecting raster rays of the three laser projectors included in the device. At the beginning, a virtual dense, uniformly saturated flat light field is created in mid-air using two projectors onto which two-sided advertising images are projected using a third projector (RF patent for invention No. 2368958, IPC G09F 19/10).

However, this device involves the use of three projectors, which significantly increases the cost of the device, and also it does not have the ability to create a three-dimensional image.

Closest to the proposed utility model is a device for displaying information, including two laser projectors that can rotate each in the azimuthal and vertical planes, forming an image on the screen, a light source, a block of holographic plates with a device for changing plates when displaying images, installed at the output of each laser projector along its optical axis. In this case, the optical axes of each of the laser projectors are oriented at one point on the same area of space near the surface used as a screen to create a holographic image element during interference. For each laser projector in each block, each holographic plate consists of two parts forming half a hologram of the same image. The light source is connected to two laser projectors through an optical splitter (RF patent for utility model No. 146058 of 03/14/2014).

The disadvantage of the closest analogue is the limited amount of information for demonstration, due to the limited capacity of the blocks of holographic plates with a device for changing plates when displaying images installed at the output of each laser projector along its optical axis.

The objective of the proposed utility model is to create a device with improved information capabilities that provides the formation of a virtual virtual dynamic image in space at different times of the day using building facades or other planes solely as a background to improve the perception of the information displayed.

The essence of the claimed utility model is characterized in that in the device for creating dynamic holographic images in a space including two laser projectors, with the possibility of rotation in the azimuthal and vertical planes, forming an image on the screen, a light source, a block of holographic plates mounted at the output of each laser projector along its optical axis, while the optical axes of each of the laser projectors are oriented at one point on the same piece of space near the surface, using used as a screen to create a holographic image element, moreover, for one laser projector in the block, the holographic plate forms a hologram of the image, and for another laser projector in the block, the holographic plate forms a hologram of the contrast virtual screen on which the hologram of the image is focused, the light source is connected to two laser projectors through an optical splitter and contains controlled drives to control the orientation of the optical axis of each laser speakers, the block of holographic plates is a multilayer optically transparent liquid crystal matrix consisting of separate optically transparent layers, and a separate layer of the optically transparent liquid crystal matrix includes two outer optically transparent plates, between which capillary channels with a solution of optically transparent electrolyte having the same optical conductivity, as well as external optically transparent plates connected to external current leads and point and liquid crystal segments of a separate layer of an optically transparent liquid crystal matrix, on the front surfaces of each separate layer of an optically transparent liquid crystal matrix, a thin film of metamaterial with a negative refractive index equal to the refractive index of the outer optical plate of a separate layer of an optically transparent liquid crystal matrix is deposited on its two optical plates .

The technical result of the claimed technical solution lies in the fact that the block of holographic plates is a multilayer optically transparent liquid crystal matrix consisting of separate optically transparent layers, and a separate layer of an optically transparent liquid crystal matrix includes two outer optically transparent plates, between which capillary channels with a solution of an optically transparent electrolyte having the same optical conductivity as the external optical transparent plates connected to external current leads and point liquid crystal segments of a separate layer of an optically transparent liquid crystal matrix; on the front surfaces of each separate layer of an optically transparent liquid crystal matrix, a thin metamaterial film with a negative refractive index equal to the refractive index is applied on its outer side optical plate of a separate layer of an optically transparent liquid crystal mat Ritsa. Due to this design of the block of holographic plates, the proposed device implements the creation and quick change during the demonstration of more generated volumetric virtual dynamic images in space at different times of the day using the facades of buildings or other planes, solely as a background to improve the perception of the displayed information, as well as increases the reliability and information content of the generated image, for example, in cinema and theater productions, when creating special ial effects.

The proposed utility model is illustrated in FIG. 1-3, where the positions 1-16 are indicated:

1 - light source;

2 - optical splitter;

3 - block laser projectors;

4 - block holographic plates;

5 - control drive of a block of laser projectors;

6 - control computer;

7 - surface used as a screen;

8 - image;

9 - a multilayer optically transparent LCD matrix;

10, 12 — layer of a multilayer optically transparent LCD matrix;

11 - current lead;

13 - external optical plates;

14 - capillary channels;

15 - point LCD segments;

16 - a thin film of metamaterial.

The proposed device for creating dynamic holographic images in space includes a light source 1, an optical splitter 2, a block of laser projectors 3, each of which is configured to move (turn) in the azimuthal plane and in a vertical plane, a block of holographic plates 4 mounted on the output of each laser projector along its optical axis, the control drive of the block of laser projectors 5, the control computer 6.

The device operates as follows. When the device is operating, a light source 1 is used, the rays of which first pass through a standard optical fiber in an optical splitter 2 and are divided into several pairs (2, 4, 6, 8 ...) of rays. At the output of the optical splitter 2, for each corresponding pair of rays of the light source 1, a block of laser projectors 3 is installed, each capable of unfolding in the azimuthal and vertical planes, and at the output of each of the two laser projectors of block 3, a block of holographic plates 4 is installed on each of its optical axes In this case, the optical axis of each of the two laser projectors of block 3 are oriented at one point on the same area of space near the surface used as the screen 7 to create an image 8. For one laser projector of block 3, a hologram of one image is used in the block of holographic plates 4, and for another laser projector of the block, the holographic plate forms a hologram of a contrast virtual screen onto which the hologram of the image is focused, and projection of image 8 completely arises on the same volume the same area of space at the surface, which can be used as a screen 7.

To improve information capabilities in the proposed device, a block of holographic plates 4 is used, which is a multilayer optically transparent LCD matrix 9, consisting of n-separate optically transparent layers 10,12 (where n = 10 ... 20). Moreover, a separate layer 10, 12 of a multilayer optically transparent LCD matrix 9 includes two outer optical plates 13, between which capillary channels are placed with a solution of optically transparent electrolyte 14 having the same optical conductivity as the outer optical plates 13 connected by current leads 11, serving to supply voltage control signals to the LCD dot segments 15 of a separate layer 10, 12 of an optically transparent liquid crystal matrix. When a voltage control signal is applied through current leads 11 and capillary channels 14, each LCD dot segment 15 of each individual layer 10, 12 of an optically transparent liquid crystal matrix 9 changes its own transparency (in the range from completely transparent to completely opaque), thereby forming the required the original holographic plate, and in another block a hologram of the contrast virtual screen is formed, on which the hologram of the image is focused. The voltage control signal through current leads 11 and capillary channels 14 to each LCD dot segment 15 of each individual layer 10,12 of the optically transparent liquid crystal matrix 9 is supplied from the control computer 6, in memory of which prior to the demonstration images of layers of the same set of layers were written holograms.

Since the block of holographic plates 4 is a multilayer optically transparent LCD matrix 9, consisting of n-separate optically transparent layers (where n = 10 ... 20), and each individual layer 10,12 of the optically transparent LCD matrix 9 includes two external optical plates 13 to eliminate the influence of multiple refraction of the illuminating plate of the laser beam from the laser projector of block 3 as it passes through each separate layer of the optically transparent LCD matrix 9, on the outer front surfaces of each individual In the case of an optically transparent liquid crystal matrix 9, a thin film of metamaterial 16 is deposited on its two outer optical plates 13 with a negative refractive index equal to and opposite in sign to the refractive index of the outer optical plate 13 of a separate layer of the optically transparent liquid crystal matrix 9.

To date, a three-dimensional metamaterial has been created in the visible light range, as well as a three-dimensional metamaterial for infrared rays (see, for example, Reversing Light with Negative Refraction. John B. Pendry and David R. Smith // Physics Today. Vol. 57. No. 6. P. 37-43. June 2004; Negative-Refraction Metamaterials: Fundamental Principles and Applications. GV Eleftheriades and K. Balmain. Wiley-IEEE Press, 2005.), which can be used in the inventive device.

To create different holographic image elements from the same light source and an optical splitter, several laser projector units can be used, each consisting of two subsequent laser projectors, with the orientation of the optical axis of each of the laser projectors on the azimuthal and vertical plane in the following points on the same piece of space near the surface used as a screen to create other holographic image elements on the background e holograms of the contrast virtual screen on which the hologram of the image is focused.

When each of the following parts of the holographic plates is synchronously created in the block of holographic plates, by correspondingly changing the optical transparency in the corresponding point segments on the surface and inside the volume of the optically transparent liquid crystal matrix, for example, by the signal of the control computer 6, the subsequent “replacement” of the created holographic plates occurs new holographic volumetric image. Moreover, with a playback speed of 24 images per second, such a device can be used as a projection system of 3D images for cinema and television broadcasts, which does not require, in particular, special glasses when viewed to create a stereoscopic effect.

As a surface used as a screen, in addition to the generated hologram of a contrasting virtual screen, for example, a wall of a building or a special structure can be used, and if necessary, a holographic three-dimensional image can be created in any pre-selected area of space (even without a surface used as a screen).

Claims (1)

A device for creating dynamic holographic images in space, including two laser projectors, with the possibility of rotation in the azimuth and vertical plane, forming an image on the screen, a light source, a block of holographic plates mounted at the output of each laser projector along its optical axis, with optical axes each of the laser projectors are oriented at one point on the same piece of space near the surface used as a screen to create a holographic element image, and the light source is connected to two laser projectors through an optical splitter and contains controlled drives to control the orientation of the optical axis of each of the laser projectors, characterized in that for one laser projector in the unit, the holographic plate forms a hologram of the image, and for the other laser projector in the holographic plate forms a hologram of a contrast virtual screen on which the hologram of the image is focused, the block of holographic plates presents It consists of a multilayer optically transparent liquid crystal matrix consisting of separate optically transparent layers, the separate layer of the optically transparent liquid crystal matrix including two outer optically transparent plates, between which capillary channels are placed with a solution of optically transparent electrolyte having the same optical conductivity as external optically transparent plates connected to external current leads and point liquid crystal segments separately the liquid crystal layer is optically transparent matrix, on the front surfaces of each of the liquid crystal layer is optically transparent matrix at its two optical plates from the outside is applied metamaterial thin film with a negative refractive index equal to the refractive index of the outer optical plate individual layer of optically transparent liquid crystal matrices.

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