Title:
DIFFRACTIVE OPTICAL COMPONENT, LASER PROJECTION MODULE, DEPTH CAMERA, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/192238
Kind Code:
A1
Abstract:
Disclosed are a diffractive optical component (60), a laser projection module (100), a depth camera (400) and an electronic device (1000). The diffractive optical component (60) comprises a sealing component (62) and a diffractive optical element (64). The sealing component (62) comprises a light-transmitting first sealing plate (622), a light-transmitting second sealing plate (624) and a spacer (626). The first sealing plate (622) is arranged opposite the second sealing plate (624). The first sealing plate (622) and the second sealing plate (624) are spaced apart by the spacer (626). The first sealing plate (622), the second sealing plate (624) and the spacer (626) together form a closed accommodating cavity (628). The diffractive optical element (64) is received in the accommodating cavity (628). The diffractive optical element (64) comprises a light-transmitting diffractive body (642) and multiple diffractive structures (644) formed on the diffractive body (642).
Inventors:
ZHANG XUEYONG (CN)
Application Number:
PCT/CN2019/070679
Publication Date:
October 10, 2019
Filing Date:
January 07, 2019
Export Citation:
Assignee:
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD (CN)
International Classes:
G02B7/00; G02B27/42; G03B15/02
Foreign References:
| CN108594393A | 2018-09-28 | |||
| US6523963B2 | 2003-02-25 | |||
| US6523963B2 | 2003-02-25 | |||
| CN105372905A | 2016-03-02 | |||
| CN107257938A | 2017-10-17 | |||
| CN204271438U | 2015-04-15 | |||
| CN204790289U | 2015-11-18 | |||
| CN204269928U | 2015-04-15 |
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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