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Large-field-angle holographic display system and method based on single spatial light modulator

A spatial light modulator and holographic display technology, applied in the field of AR display, to achieve the effect of eliminating visual fatigue

Pending Publication Date: 2021-04-13
上海趣立信息科技有限公司
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[0049] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0050] Such as figure 1 As shown, a large field of view holographic display system based on a single spatial light modulator includes a control module 101, a point light source 102, a polarizer 103, a first beam splitter 104, a spatial light modulator SLM 105, and a first lens group 106 , a partitioned shutter diaphragm 107 , a second lens group 108 , and a second beam splitter 109 .

[0051] Firstly, the control module 101 calculates the three-dimensional image information to be displayed into a two-d...

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Abstract

The invention provides a large-view-field-angle holographic display system and method based on a single spatial light modulator. The large-view-field-angle holographic display system comprises a control module, a light source, a polarizing film, a first spectroscope, a spatial light modulator SLM, a first lens group, a partition shutter diaphragm, a second lens group and a second spectroscope. According to the invention, intensity information and depth information of a three-dimensional image are calculated into a common two-dimensional hologram through a holographic algorithm and are loaded onto a liquid crystal spatial light modulator; a three-dimensional image with real depth-of-field information can be projected by utilizing the phase modulation capability of the spatial light modulator, so that the visual fatigue of human eyes is eliminated; and in combination with a 4F field angle amplification system and a partition shutter diaphragm placed on the Fourier transform surface of the 4F system, the image area of the spatial light modulator is multiplexed through synchronous sequential control of the spatial light modulator and the partition shutter diaphragm, so that a holographic near-to-eye three-dimensional display effect with a large field angle is obtained.

Description

technical field [0001] The present invention relates to the field of AR display technology, in particular to a holographic display system and method based on a single spatial light modulator with a large viewing angle. Background technique [0002] At present, near-eye AR display technology mainly uses screens such as OLED and LCos. The image source provided is a two-dimensional image, and the three-dimensional image display effect needs to be realized through binocular parallax technology, which inevitably results in binocular convergence adjustment and visual refraction adjustment. Mismatch, resulting in visual fatigue. [0003] As a true three-dimensional display technology, holographic three-dimensional display technology can completely record and reconstruct the light field of three-dimensional objects, and provide all the information required by the human visual system. [0004] Due to the limitations of the semiconductor process, the pixel size of the current commerc...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/01
CPCG02B27/0172G02B2027/0174
Inventor 孙立胡金鑫
Owner 上海趣立信息科技有限公司
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