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Title:
AUGMENTED REALITY DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/197100
Kind Code:
A1
Abstract:
An augmented reality device (100), comprising a lens frame (10), a combiner (31), a laser projector (32) and an optical filter (33). The combiner (31) is mounted on the lens frame (10), and comprises an inner surface (312) and an outer surface (313) which are arranged opposite to each other. The laser projector (32) is mounted on the lens frame (10), and is used for emitting laser (L 0). The optical filter (33) is mounted on the outer surface (313) of the combiner (31), and the block waveband of the optical filter (33) comprises the waveband of the laser (L 0). After the laser (L 0) enters the combiner (31), part of the laser (L 0) is emitted from the inner surface (312) of the combiner (31), part of the laser (L 0) is emitted from the outer surface (313) of the combiner (31), and the optical filter (33) shields the laser emitted from the outer surface (313) of the combiner (31). After passing through the optical filter (33), part of ambient light (L C) having the wavelength outside the block waveband enters the combiner (31) from the outer surface (313) of the combiner (31), and is emitted from the inner surface (312) of the combiner (31). The augmented reality device (100) can reduce the possibility that laser (L 0) projected by the laser projector (32) is emitted outwards from the augmented reality device (100), prevent light carrying digital information from leaking out, and improve user privacy.

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Inventors:
ZHANG PENGPENG (CN)
ZHU SHUAISHUAI (CN)
ZHENG XIAOWEN (CN)
Application Number:
PCT/CN2021/081824
Publication Date:
October 07, 2021
Filing Date:
March 19, 2021
Export Citation:
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Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G02B27/01
Foreign References:
CN111258070A2020-06-09
CN110908125A2020-03-24
CN106133583A2016-11-16
CN210166574U2020-03-20
US5831712A1998-11-03
CN202010233011A2020-03-28
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
Download PDF:
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