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Stereographic projection display device

A technology of display device and stereo projection, which is applied in stereo photography, projection device, photography, etc., can solve the problems of space occupied by layout, low quality, low imaging brightness, etc., and achieve the effect of naked-eye stereo display

Active Publication Date: 2014-08-20
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a three-dimensional projection display device to solve the technical problems of low imaging brightness, low quality and space-consuming arrangement existing in the existing projection-type three-dimensional display technology

Method used

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Embodiment Construction

[0020] The present invention will be further described below with reference to the accompanying drawings and in combination with preferred embodiments.

[0021] Concept definition:

[0022] Horizontal direction: the direction parallel to the ground;

[0023] Vertical direction: the direction perpendicular to the ground;

[0024] This specific example part provides a kind of such as figure 1 and figure 2 The shown three-dimensional projection display device includes a projector array 10 and a display screen 20, and the projector array 10 includes more than two projectors. For example, in this embodiment, the projector array 10 includes five projectors: 11, 12 , 13, 14, 15; the display screen 20 includes a Fresnel lens 21, a longitudinal scattering layer 22, and a specular reflection layer 23 that are arranged in close proximity to the projector array 10 in sequence. The optical characteristics of the Fresnel lens are equivalent to the convex lens with the same parameters. ...

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Abstract

The invention discloses a stereographic projection display device which comprises a display screen and a projector array. The display screen comprises a Fresnel lens, a longitudinal scattering layer and a specular reflection layer, wherein the Fresnel lens, the longitudinal scattering layer and the specular reflection layer are tightly attached in the sequence of gradually getting away from the projector array. The flat face of the Fresnel lens makes contact with the longitudinal scattering layer. The focal length, in the horizontal direction, of the Fresnel lens is smaller than the focal length in the perpendicular direction. The longitudinal scattering layer is used for scattering light rays in the perpendicular direction. The projector array comprises at least two projectors which are placed on the focal plane, in the perpendicular direction, of the Fresnel lens. Parameters of the Fresnel lens can be adjusted according to different observation indexes to form different observation areas, wherein the observation indexes include the observation angular distance and the observation degree, and the parameters of the Fresnel lens include the focal distance in the horizontal direction and the focal distance in the perpendicular direction. The stereographic projection display device can project and display high-definition and high-luminance images, is flexible in arrangement, and can be switched between the 2D mode and the 3D mode.

Description

technical field [0001] The invention relates to the field of computer vision technology and stereoscopic video, in particular to a stereoscopic projection display device. Background technique [0002] Projection-based multi-view glasses-free stereoscopic display is a technology that projects different images in the left and right eyes to virtualize the depth information of the objects in the image, and finally realizes the stereoscopic display of the scene. Stereoscopic images from different perspectives. This technology is a quasi-3D display technology, because the displayed perspective pictures are intermittent, which is different from the continuous perspective display of natural scenes. [0003] The multi-view glasses-free stereoscopic display technology can be mainly divided into two categories: flat panel stereoscopic display technology and projection stereoscopic display technology. [0004] The flat-panel stereoscopic display technology adds a layer of grating to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/56G03B21/60G03B35/20
Inventor 张磊唐邵张永兵李凯戴琼海
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV