A stereo projection display device

A display device and stereo projection technology, which is applied in projection devices, optics, instruments, etc., can solve the problems of large human eye damage, overall performance decline, and large light loss, so as to reduce damage, enhance three-dimensionality, and improve utilization. Effect

Active Publication Date: 2015-10-28
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, both the active stereoscopic projection and the passive stereoscopic projection have the following disadvantages: the light loss is large, and the utilization rate of the output light of the projector is low;
Especially for active stereo projection, the above two problems are more prominent
In addition, ordinary projection platforms are limited in size and cannot be enlarged without limit
For example, metal screens, first of all, it is difficult to achieve infinite size. Larger-sized metal screens are usually completed by splicing; secondly, when the size is increased by splicing, its overall performance will be reduced due to the production process and installation process. Lead to poor viewing effect and three-dimensional display effect

Method used

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  • A stereo projection display device
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Experimental program
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specific Embodiment approach 1

[0014] Such as figure 1 As shown, it is a schematic structural diagram of the stereoscopic projection display device in this specific embodiment. The stereoscopic projection display device includes a stereoscopic projector 1 , a holographic projection film screen 3 and glasses 5 . The stereo projector 1 is used to project a sequence of image frames that can be used for stereoscopic display. The position of the stereo projector 1 enables the light projected by the stereo projector to be projected onto the holographic projection film screen 3. The glasses 5 and the stereo projector 1, it is used for the user to watch the picture emitted by the holographic projection film screen 3 after wearing it.

[0015] Specifically, the stereo projector 1 can be an active stereo projector or a passive stereo projector.

[0016] When it is an active stereoscopic projector, the projected image frame sequence is an image frame sequence in which the left and right eye image sequences are alter...

specific Embodiment approach 2

[0027] The difference between this specific embodiment and Embodiment 1 is that in this specific embodiment, the positional relationship between the projector and the projection film constitutes a rear-projection positional relationship, that is, the projector is located on the back side of the holographic projection film screen, The light projected by the stereo projector is refracted and transmitted by the holographic projection film screen and reaches the user watching. In the first specific embodiment, the positional relationship between the projector and the projection film is a front-projection positional relationship.

[0028] like Figure 4 As shown, it is a schematic structural diagram of the stereoscopic projection display device in this specific embodiment. The stereoscopic projection display device includes a stereoscopic projector 2 , a holographic projection film screen 4 and glasses 6 . Stereo projector 2 projects image frame sequence for stereoscopic display,...

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Abstract

The invention discloses a three-dimensional projection display device, which comprises a three-dimensional projector, a holographic projection film screen and eyeglasses, wherein the three-dimensional projector is used for projecting a three-dimensionally displayed image frame sequence, and is positioned in a way that light projected by the three-dimensional projector can be projected onto the holographic projection film screen; and the eyeglasses are matched with the three-dimensional projector, and are worn by a user to watch a picture projected by the holographic projection film screen. According to the three-dimensional projection display device, the holographic projection film screen is used as a screen, so that the light loss of an active three-dimensional projection system can be effectively reduced, and the utilization rate of the light can be increased; in addition, due to the adoption of a holographic projection film, eyes can be less injured by light reflected or transmitted by the holographic projection film; even though the screen is manufactured into a large size, a better film watching effect can be achieved; and the holographic projection film is transparent, so that the three-dimensionality of an object scene can be enhanced.

Description

【Technical field】 [0001] The invention relates to the field of stereoscopic video, in particular to a stereoscopic projection display device. 【Background technique】 [0002] Stereoscopic projection is a technology that projects different pictures in the left and right eyes of a person and then virtualizes the depth information of the objects in the picture, and finally realizes the stereoscopic display of the scene. Stereoscopic projection is mainly divided into two categories: active stereoscopic projection and passive stereoscopic projection. The active stereoscopic projection image is clear and the effect is good. And due to the advancement of design technology, the glasses used in the new active stereoscopic projection technology have become cheaper, wear-resistant, light and rechargeable, and their advantages have become more and more obvious. The advantages of passive stereoscopic projection are: light weight and low price, no power consumption and no synchronization...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/22G03B21/56
Inventor 张磊张永兵唐邵
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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