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Autostereoscopic display

A visual display, naked-eye stereo technology, applied in stereo systems, stereo photography, instruments, etc., can solve problems such as wide interval, unevenness, stereo effect or image quality damage.

Inactive Publication Date: 2012-04-11
HITACHI CONSUMER ELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] If the projectors are arranged closely enough so that the above-mentioned adjacent deflection fulcrums are sufficiently close to each other, there will be no problem. However, in reality, the distance between them is wide, and there is a problem that people feel uneven and gapped images when viewing the screen.
If the gap between pixels is felt in this way, even if there are many pixels, there is a problem that the three-dimensional effect or the image quality will be damaged.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Regarding the embodiment in the case where a microlens array is used as a condensing optical device, a diffusion plate is used as a diffusion device, and a projector is used as an image projection device, use figure 1 to explain.

[0024] Superimposed projection is performed from the projector group 1 to the microlens array 2 . people at figure 1 View the direction of the microlens array from the position of the right eye 3 and the left eye 4. The light emitted from the projector group 1 is diffused by the diffuser plate 7 , then enters the microlens array 2 , is once condensed, and then diffused as a directional light. A part of the light emitted from the projector (5 and 6 in the figure) selectively enters the left and right eyes of a person according to their positions, and by outputting information with parallax as light information, stereoscopic viewing can be performed with the naked eye.

[0025] use image 3 and Figure 4 , the effect of the diffusion plate...

Embodiment 2

[0053] Next, use figure 2 , to describe an embodiment using a biconvex lens as a light-condensing optical device. exist figure 2 in, instead of figure 1 The microlens array uses 2 lenticular lens sheets (20,21 among the figure). Two diffusion plates are used, the diffusion plate 22 is provided at the focus position of the lenticular lens sheet 20 , and the diffusion plate 23 is provided at the focus position of the lenticular lens sheet 21 . The imaging range of the projector (the range of the focal depth of the projector including the imaging position of the light from the projector) is sufficiently wider than the focal length of the lenticular lens, so the lenticular lens sheets 20, 21 can only be provided within the imaging range of the projector. , Diffusion plates 22 and 23 are sufficient.

[0054] As shown in this embodiment, by using a lenticular lens, the lens intervals in the up-down direction and in the left-right direction can be separately set, and the number...

Embodiment 3

[0057] As another example, a holographic optical element utilizing the diffraction effect may also be used as the light-condensing optical device. The holographic optical element can also be used like the above-mentioned bi-convex lens, and can also be made into a thin plate by combining bidirectional light-condensing optical devices. Therefore, the diffuser plate is made into one piece, and it only needs to be installed at the focal point of the holographic optical element.

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PUM

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Abstract

Provided is an autostereoscopic display. In a stereo visual display for manufacturing light space by a plurality of projectors and lens units instead of a screen, since pixels sensed by people are small in size and the gaps among the pixels are large, the smoothness of images is lost and the stereo sensing effect is poor. The utility model provides the autostereoscopic display. By installing a diffuser between a group of projectors and lenses to spread light rays from the projector group, it is possible to provide pixels with such sizes as to give perception that pixels are adjacent to each other. As a result, smooth representation of images and video display with a high stereoscopic effect are made possible.

Description

technical field [0001] The present invention relates to a display device for displaying images that can be viewed stereoscopically by a person without wearing special glasses or other equipment for obtaining stereoscopic vision. Background technique [0002] Three-dimensional televisions capable of displaying stereoscopic images by using baffle-type glasses have been put on the market, and the market for stereoscopic displays has been activated. As a next-generation stereoscopic display, it is being studied that stereoscopic images can be felt without wearing special glasses such as visors or other devices for obtaining stereoscopic vision (this is referred to as naked eyes in this specification). Naked-eye stereoscopic display technology. As a technique for realizing naked-eye stereoscopic vision, there is M.G.Lippmann "Epreuves reversibles donnant la sensation du relief," J.de Phys., vol.7, 4 th series, pp. 821-825, November 1908. (referred to as Document 1) is a stereo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/22G02B27/00G03B35/20G02B30/26G02B30/29H04N13/363
CPCG02B27/225H04N13/0459H04N13/0418H04N13/32H04N13/363G02B30/26G02B30/29G02B30/27
Inventor 及川道雄山崎真见小池崇文坂井秀行濑尾欣穗池田英博
Owner HITACHI CONSUMER ELECTRONICS CORP
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