AR device with adjustable field angle based on holographic grating system

A holographic grating and adjustable technology, applied in the field of AR equipment, can solve the problems of increasingly small and compact requirements, limited field of view, and unfavorable system applications, so as to improve wearing comfort and expand the field of view. angle, the effect of improving safety performance

Pending Publication Date: 2020-05-12
SHENZHEN LOCHN OPTICS HI-TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an AR device with an adjustable field of view based on a holographic grating system, so as to solve the shortcoming that the AR display system on the market has a limited field of view. If you want to gradually expand this field of view

Method used

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Examples

Experimental program
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Effect test

Example Embodiment

[0032] see Figure 1-5 As shown in the figure, an AR device with an adjustable field angle based on a holographic grating system includes an adjustable MEMS two-dimensional scanning element 6, characterized in that the adjustable MEMS two-dimensional scanning element 6 includes a lateral adjustment device 61, an RGB three-dimensional scanning element Color laser device 62, adjustable housing 63, MEMS two-dimensional scanning element 64, transparent protective cover 65 and rotation adjusting device 66, the MEMS two-dimensional scanning element 64 includes a controller and a MEMS scanning mirror, the controller and the RGB three The color laser device 62 is electrically connected. The MEMS scanning mirror includes a reflective mirror surface, a driving controller and a concave mirror. The reflective mirror surface and the concave mirror are both fixed on the driving controller. connect.

[0033] The controller can control the color and brightness of the mixed light emitted by the

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Abstract

The invention discloses a field angle adjustable AR device based on a holographic grating system. According to the invention, MEMS laser two-dimensional scanning is combined with the holographic grating; by means of the holographic grating effect, a thick lens is not needed. The weight of the glasses is greatly reduced; improving wearing comfort, by utilizing MEMS laser two-dimensional scanning and combining the structures of the transverse adjusting device and the rotary adjusting device, the controller can control the driving controller, so that the reflecting mirror surface is driven to swing at a high speed along the X axis and the Y axis according to a specific frequency, and the MEMS scanning mirror can be freely switched between slow scanning and fast scanning. Therefore, the film with the photosensitive medium can be attached to a spectacle lens, so that the film with the photosensitive medium can be combined with actual spectacles, various convenience is integrated, and the problem that the size of a field angle of an AR display system is limited by the refractive index of a material in the design process is solved.

Description

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Claims

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Application Information

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Owner SHENZHEN LOCHN OPTICS HI-TECH CO LTD
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