WAVEGUIDE DISPLAY LENS AND AUGMENTED REALITY GLASSES

Title:

WAVEGUIDE DISPLAY LENS AND AUGMENTED REALITY GLASSES

Document Type and Number:

WIPO Patent Application WO/2021/073544

Kind Code:

A1

Abstract:

Provided are a waveguide display lens and augmented reality glasses. The waveguide display lens comprises a lens body (10), wherein a coupling-in area (11), a coupling-out area (12), a left turning area (13) and a right turning area (14) are arranged on the lens body (10), a nano structure for diffracting light rays is arranged in each of the coupling-in area (11), the coupling-out area (12), the left turning area (13) and the right turning area (14), and the coupling-in area (11) and the coupling-out area (12) are arranged between the left turning area (13) and the right turning area (14); and the coupling-in area (11) is configured for receiving image light, the image light is symmetrically diffracted by the nano structure in the coupling-in area (11) to form left diffraction light and right diffraction light, the left diffraction light is diffracted by the left turning area (13) and then enters the coupling-out area (12), the right diffraction light is diffracted by the right turning area (14) and then enters the coupling-out area (12), and the left diffraction light and the right diffraction light are emitted from the coupling-out area (12). The waveguide display lens has a symmetrical diffraction characteristic, can realize the superposition of left and right fields of view, expand the fields of view, and eliminate imbalance of the diffraction efficiency.

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Inventors:

LUO MINGHUI (CN)
QIAO WEN (CN)
LI RUIBIN (CN)
CHENG TANGDONG (CN)
CHEN LINSEN (CN)

Application Number:

PCT/CN2020/120960

Publication Date:

April 22, 2021

Filing Date:

October 14, 2020

Export Citation:

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Assignee:

SVG TECH GROUP CO LTD (CN)

International Classes:

G02B5/18; G02B27/01

Foreign References:

CN109073883A	2018-12-21
CN210720883U	2020-06-09
CN101688977A	2010-03-31
CN108780224A	2018-11-09
CN207037130U	2018-02-23
US6580529B1	2003-06-17

Attorney, Agent or Firm:

PSHIP FIRM,LLC (CN)

Download PDF:

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