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Head-mounted display system based on three-dimensional laser holographic projection technology

A holographic projection and three-dimensional laser technology, applied in optics, optical components, instruments, etc., can solve the problems of reducing the imaging quality of the head-mounted display device, the difficulty of processing the nano-grating structure, and affecting the user experience, etc., to achieve low loss and simple structure , The effect of low processing cost

Pending Publication Date: 2018-01-09
TAPUYIHAI SHANGHAI INTELLIGENT TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0004] 2) The traditional three-dimensional projection technology is based on the principle of point-to-point imaging, and the imaging quality is directly affected by the image quality of the display chip
[0006] 4) There is a gap between the convergence point of the human eye and the focal point of the conjugate image. Long-term observation will cause eye fatigue and affect user experience
[0009] 2) The nano-grating structure used in the transparent light field lens is difficult to process, the processing technology is complicated, and the cost is high
[0010] 3) The stray light and dispersion caused by the diffraction and interference of the nano-grating are difficult to be corrected by the optical system, which reduces the imaging quality of the head-mounted display device

Method used

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  • Head-mounted display system based on three-dimensional laser holographic projection technology
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  • Head-mounted display system based on three-dimensional laser holographic projection technology

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Embodiment Construction

[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be noted that the technical features or combinations of technical features described in the following embodiments should not be regarded as isolated, and they can be combined with each other to achieve better technical effects.

[0035] It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the scope of the invention. The limited conditions for implementation, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the invention, should fall within the scope of the technical content disclosed by the invention. within range.

[0036] s...

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Abstract

A head-mounted display system based on three-dimensional laser holographic projection technology is composed of a collimated light source, a spatial light modulator, a beam splitter prism, an imagingsystem, a beam splitter mirror, a free-form surface half transparent and half reflecting mirror and an aperture diaphragm. The head-mounted display system of the invention has the advantages of simplestructure, high image quality, high brightness and no dead spots, can realize the three-dimensional reconstruction of image information and can be applied to an augmented reality head-mounted displaydevice.

Description

technical field [0001] The invention relates to the field of head-mounted displays, in particular to a head-mounted display system based on three-dimensional laser holographic projection technology. Background technique [0002] The traditional three-dimensional projection technology uses micro-displays to project two-dimensional images, which are displayed on the left and right eyes of the user for observation. Since there is a certain distance between the two eyes, a certain angle will be formed between the left and right eyes and the observed image, and there is a certain gap in the observed image, which is called human eye parallax. The traditional three-dimensional projection technology is to use the parallax of human eyes to form images and reflect them in the brain to produce a three-dimensional sense of distance. Existing head-mounted display devices, such as Hololens and Google Glass, all use this technology to achieve 3D imaging. The disadvantages of the head-mou...

Claims

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Application Information

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IPC IPC(8): G02B27/01G02B27/00G02B27/10G02B27/22
Inventor 方瑞芳
Owner TAPUYIHAI SHANGHAI INTELLIGENT TECH CO LTD
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