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Holographic stereo projection device based on nonlinear crystal and method thereof

A nonlinear crystal and stereoscopic projection technology, applied in the field of projection, can solve the problems of projected image quality degradation and unclear images, and achieve the realistic effect of three-dimensional holographic images

Inactive Publication Date: 2015-03-04
SHENZHEN ESTAR DISPLAYTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method will easily lead to a decrease in the quality of the projected image, and the image is not clear

Method used

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  • Holographic stereo projection device based on nonlinear crystal and method thereof
  • Holographic stereo projection device based on nonlinear crystal and method thereof
  • Holographic stereo projection device based on nonlinear crystal and method thereof

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Experimental program
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no. 1 approach

[0023] refer to figure 1 , the first embodiment of the holographic stereoscopic projection device based on nonlinear crystals of the present invention, the device includes: glasses 101 and a projection system 102;

[0024] Wherein, a predetermined area of ​​the glasses 101 is provided with a nonlinear crystal 103;

[0025] The projection system 102 is used to generate a projection image, and project the projection image into the nonlinear crystal 103, and the nonlinear crystal 103 converts the projection image projected into it into a second projection image by wavelength conversion. The re-projected image is further projected to the eyes (not shown) of the user wearing the glasses 101 .

[0026] The projection system 102 is set on the glasses 101. In this embodiment, the projection system 102 is set at the center of the glasses 101, and is used to project to the nonlinear crystal 103 after generating a projected image; in other embodiments, the projection system 102 It may ...

no. 2 approach

[0031] refer to image 3 , the second embodiment of the holographic stereoscopic projection device based on nonlinear crystals of the present invention, the device includes: glasses 301 and a projection system 302;

[0032] Wherein, a predetermined area of ​​the glasses 301 is provided with a nonlinear crystal 303; the nonlinear crystal 303 includes a plurality of sub-crystal areas with different wavelength conversion properties, and the projection system is used to generate multiple primary projection images, and each primary projection image Projected to the corresponding sub-crystal regions, and then each sub-crystal region respectively forms second projection images of different primary colors, and the second projection images of different primary colors are further synthesized into a color image.

[0033] Such as image 3 as shown in (b), image 3 (b) is image 3 (a) A schematic cross-sectional view of the nonlinear crystal. In this embodiment, the nonlinear crystal 30...

no. 3 approach

[0038] refer to Figure 4 , the third embodiment of the holographic stereoscopic projection device based on nonlinear crystals of the present invention, the device includes: glasses 401 and a projection system 402;

[0039] A nonlinear crystal 403 is set on the glasses 401, and a projection system 402 is set separately from the glasses 401 to generate a projection image, and project the projection image into the nonlinear crystal 403, and the nonlinear crystal 403 will project a projection inside it The image is converted into a second projected image through wavelength conversion, and the second projected image is further projected to the eyes of the user wearing the glasses 401 .

[0040] Wherein, the glasses 401 are further provided with a first reflective coating (not shown) for reflecting light of the same wavelength of a projected image in other areas other than the nonlinear crystal 403, and the first reflective coating can be coated on the frame of the glasses 401 or ...

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Abstract

The invention discloses a holographic stereo projection device based on nonlinear crystal and a method thereof. The device comprises glasses of which the predetermined area is provided with the nonlinear crystal; and a projection system which is used for generating a primary projection image and projecting the primary projection image to the nonlinear crystal, wherein the nonlinear crystal converts the primary projection image projected into the nonlinear crystal into a secondary projection image via a wavelength conversion mode, and the second projection image is further projected to eyes of users wearing the glasses. With application of the aforementioned mode, a three-dimensional holographic image can be watched in a lifelike and clear way by the users under the situation of wearing the device no matter how the head parts move.

Description

technical field [0001] The invention relates to the field of projection, in particular to a holographic stereoscopic projection device and method based on nonlinear crystals. Background technique [0002] Three-dimensional (3D) display projection technology is constantly developing and applied in various fields, such as education, medical treatment, biological science and so on. [0003] However, traditional 3D display projection technology usually requires viewers to wear related viewing equipment, such as glasses, helmets, goggles or other auxiliary tools. For example, when we watch 3D movies, we must wear special 3D glasses to see the Three-dimensional effect picture. [0004] The existing naked-eye 3D technology is basically divided into parallax display and spatial display. Parallax display viewers often can only see 3D images in a single direction in the front, but not in other directions. An invisible surface that acts like a veil that reflects images projected onto...

Claims

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Application Information

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IPC IPC(8): G03B35/18G02B27/22
CPCG02B30/34G02F1/3501G03B35/18G03H1/22
Inventor 刘美鸿陈易华
Owner SHENZHEN ESTAR DISPLAYTECH