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AR glasses

A technology of AR glasses and corner prisms, which is applied in the field of AR glasses, can solve the problems of high cost of light sources and insufficient brightness, and achieve the effect of improving display brightness

Pending Publication Date: 2021-11-23
SHENZHEN OPTIARK SEMICON TECH LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] This application provides a kind of AR glasses to solve the problem of high cost of light source or insufficient brightness in AR glasses

Method used

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Embodiment Construction

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present disclosure with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are part of the embodiments of the present disclosure, not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present disclosure.

[0026] Most of the current light sources for AR glasses use Micro LEDs, which have a brightness of 300,000 nit (1 nit = 1 cd / m2). In the AR waveguide, due to the diffraction effect of each area, the final output brightness generally does not exceed 500 nit. OLED has a brightness of only 30,000 nits. According to the efficiency ratio conversion, the final output light is only 50 nits, which cannot meet the display requirements for human eyes. However, OLED's ...

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Abstract

The invention relates to AR glasses. The AR glasses comprise a waveguide sheet which is provided with an entrance pupil grating, a left pupil expanding grating, a right pupil expanding grating, a left exit pupil grating, and a right exit pupil grating; a first optical assembly which is arranged corresponding to the entrance pupil grating, wherein formed first light enters the entrance pupil grating and is diffracted to form first left diffracted light and first right diffracted light, the first left diffracted light is conducted and output through the left pupil expanding grating and the left exit pupil grating in sequence, and the first right diffracted light is conducted and output through the right pupil expanding grating and the right exit pupil grating in sequence; and a second optical assembly arranged corresponding to the entrance pupil grating, wherein formed second light enters the entrance pupil grating and is diffracted to form second left diffracted light and second right diffracted light, the second left diffracted light is conducted and output through the left pupil expanding grating and the left pupil exit grating in sequence and is coupled with the first left diffracted light, the second right diffracted light is transmitted and output through the right pupil expanding grating and the right pupil exit grating in sequence and is coupled with the second right diffracted light. The AR glasses are high in light emitting brightness.

Description

technical field [0001] The present application belongs to the field of optical technology, and in particular relates to AR glasses. Background technique [0002] With the advancement of imaging technology, people's demand for immersive experience is getting higher and higher. In recent years, the development of VR / AR technology has gradually satisfied people's pursuit of visual experience. Head-mounted devices can free people's hands, reduce dependence on screens, and create better visual effects. For head-mounted devices, near-eye display is the key to its technology, and imaging quality and thinness are the main considerations. The near-eye display system is generally composed of an image far and near optical transmission system, and the image frame emitted by the image source is transmitted to the human eye through the optical transmission system. Here, unlike VR’s blocking of the external environment, AR needs to have a certain transmittance, so that the wearer can see...

Claims

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Application Information

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IPC IPC(8): G02B27/01G02B6/10G02B5/18
CPCG02B27/0172G02B6/10G02B5/1819G02B2027/0178G02B2027/0118
Inventor 蒋厚强初大平邓家裕朱以胜
Owner SHENZHEN OPTIARK SEMICON TECH LTD
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