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Holographic AR three-dimensional display method and module and near-to-eye display system

A three-dimensional display and holography technology, applied in optical components, instruments, optics, etc., can solve the problems of large amount of hologram calculation, low resolution of spatial light modulator, accelerated calculation, etc., to reduce diffraction calculation, reduce optical path volume, The effect of reducing the spatial frequency

Pending Publication Date: 2022-01-04
SHENZHEN LOCHN OPTICS HI-TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the resolution of the spatial light modulator in the traditional 3D holographic display system is low, and the pixel size is large. The 4f system filtering is required in the traditional optical path, which will lead to an increase in the optical system. In addition, the calculation amount of the hologram is huge, and accelerated calculation is also a challenge. outstanding issues

Method used

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  • Holographic AR three-dimensional display method and module and near-to-eye display system
  • Holographic AR three-dimensional display method and module and near-to-eye display system

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Embodiment 1

[0043] An embodiment of the present invention provides a holographic AR three-dimensional display module, please refer to figure 1 , which shows the structure of a holographic AR three-dimensional display module provided by an embodiment of the present invention. The holographic AR three-dimensional display module includes: a light source 101, a modulation lens group 102, a light splitting unit 103, a spatial light modulator 104, Aperture 105. specifically,

[0044] The light source 101 is used to emit illumination light; preferably, the light source 101 can be a point light source that emits divergent illumination light, for example, it can be a point light source that uses an optical fiber to couple laser light to emit illumination light at the head of the fiber, or, The divergent laser light source obtained through the pinhole filter, or the red, green and blue divergent lasers emitted sequentially from the fiber head by coupling into the optical fiber can be selected acco...

Embodiment 2

[0053] An embodiment of the present invention provides a holographic AR three-dimensional display method, which is applied to a holographic display module. The holographic display module can be as described in the first embodiment and figure 1 The holographic AR three-dimensional display module, specifically, the holographic AR three-dimensional display method can be applied to the spatial light modulator of the holographic AR three-dimensional display module, please refer to figure 2 , which shows the flow of a holographic AR three-dimensional display method provided by an embodiment of the present invention, the method includes but is not limited to the following steps:

[0054] Step S100: performing converging spherical wave encoding on the light field image to obtain a hologram;

[0055] In the embodiment of the invention, the hologram is mainly generated by the interference of the converging spherical wave and the object light converging in the eye box on the holographic...

Embodiment 3

[0103] An embodiment of the present invention provides a near-eye display system, please refer to Figure 7 , which shows the structure of a near-eye display system provided by an embodiment of the present invention. The near-eye display system 10 includes: two holographic AR three-dimensional display modules 100 as described in Embodiment 1 arranged side by side, and the two The three-dimensional light field images emitted by the holographic AR three-dimensional display module 100 are used to enter the left eye and the right eye respectively, and provide three-dimensional images containing parallax information for the left eye and the right eye of the human being respectively, realizing binocular large viewing angle holographic AR. 3D display.

[0104] It should be noted, Figure 7 The near-eye display system 10 in the shown example takes AR glasses as an example. In some other embodiments, the near-eye display system 10 can also be other near-eye display devices, such as ot...

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Abstract

An embodiment of the invention relates to the field of optical display, and discloses a holographic AR three-dimensional display method and module and a near-to-eye display system. The module comprises a light source, a modulation lens group, a light splitting unit, a spatial light modulator and a diaphragm, wherein the spatial light modulator can load a hologram of a three-dimensional image, receive converged spherical waves, and modulate the converged spherical waves so as to output and display a three-dimensional light field image visible to human eyes. According to the holographic AR three-dimensional display method and module provided by the embodiment of the invention, diffraction calculation is reduced through light field image coding, the generation process of the hologram is accelerated, the hologram is obtained through interference by taking the converged spherical wave as the reference light, the spatial frequency of the hologram is reduced, and thus a large-viewing-angle holographic AR three-dimensional display effect is obtained.

Description

technical field [0001] Embodiments of the present invention relate to the field of optical display, in particular to a holographic AR three-dimensional display method, module, and near-eye display system. Background technique [0002] Augmented reality (Augmented Reality, AR) display technology is a new type of display technology with important application value. This technology allows users to see the presented virtual image while seeing the environment, and plays the role of information prompt and reality augmentation. , can greatly improve work efficiency, and has important application value in industrial design, education, national defense, entertainment and other fields. [0003] The common method to realize the three-dimensional display of augmented reality is binocular parallax, that is, the left and right eyes provide two-dimensional images containing parallax information, and the three-dimensional perception is formed through the synthesis of the human brain. Howeve...

Claims

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Application Information

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IPC IPC(8): G02B27/01G02B30/50
CPCG02B27/0101G02B30/50Y02D10/00
Inventor 杨鑫宋强马国斌
Owner SHENZHEN LOCHN OPTICS HI-TECH CO LTD
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