Light conduction and separation method and device based on reflective waveguide coupler

A separation method and coupler technology, applied in light guides, optics, instruments, etc., can solve the problems of not considering the quality of outgoing light, forming ghost images, and reducing the user experience of glasses displays, so as to reduce the amount of stray light and improve User experience, effect of improving image quality

Inactive Publication Date: 2018-01-30
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

None of the reflective waveguide couplers provided in the prior art takes into account the quality of the outgoing light after passing through the reflective waveguide coupler, which will eventually lead to the formation of ghost images on the human eye, thereby reducing the user experience of the glasses display

Method used

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  • Light conduction and separation method and device based on reflective waveguide coupler
  • Light conduction and separation method and device based on reflective waveguide coupler
  • Light conduction and separation method and device based on reflective waveguide coupler

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Embodiment Construction

[0039] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0040] Such as figure 1 As shown, an embodiment of the present invention provides a light transmission and separation method based on a reflective waveguide coupler, including:

[0041] S1, acquiring the set incident field angle of the waveguide coupler and the refraction angle range of the incident light on the surface of the light guide plate;

[0042] S2. Adjust the size of the refraction angle within the range of the refraction angle, and at the same time adjust the size of the acute angle between the reflective unit in the waveguide coupler and the surface of the light guide plate, so that the acute angle and the refraction The angle satisfies a preset condition, so...

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Abstract

The invention provides a light conduction and separation method and device based on a reflective waveguide coupler. The method includes the steps of obtaining a set incident field angle of the waveguide coupler and a refraction angle range of incident light on a light guide plate surface; and adjusting the refraction angle in the refraction angle range, and adjusting an acute-angle included anglebetween a reflecting cell in the waveguide coupler and the light guide plate surface, so that the acute-angle included angle and the refraction angle meet preset conditions, incident light corresponding to the incident field angle is led out from an emergent end of the waveguide coupler, and information light used for forming an image is separated from emergent light of the waveguide coupler. Thusstray light entering human eyes can be greatly reduced, thereby improving image quality formed in the human eyes, and improving user experience.

Description

technical field [0001] The present invention relates to the field of waveguide couplers, and more specifically, to methods and devices for conducting and separating light based on reflective waveguide couplers. Background technique [0002] A head-mounted display is an image display device worn on the head, and is usually placed on the user's head with a hat, a helmet, or a spectacle frame as a support. The head-mounted display is mainly composed of four parts: image information display source, circuit control system, optical imaging system, fixed support structure, and uses the optical system to project the image emitted by the micro-display into a magnified virtual image in front of people's eyes. Head-mounted displays are new products in modern portable mobile display devices, and are widely used in image display of augmented reality, virtual reality, and stereoscopic display. [0003] Glasses display is a new type of wearable display device. It is the most portable type...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/00G02B27/01
Inventor 谭小地肖雪林枭
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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