Invention Grant
- Patent Title: Vertical-cavity surface-emitting laser, structured light module and method for light projection and terminal
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Application No.: US16408334Application Date: 2019-05-09
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Publication No.: US10971900B2Publication Date: 2021-04-06
- Inventor: Hao-Jen Wang , Chung-Te Li , Yung-Lin Huang
- Applicant: SHENZHEN GOODIX TECHNOLOGY CO., LTD.
- Applicant Address: CN Guangdong
- Assignee: SHENZHEN GOODIX TECHNOLOGY CO., LTD.
- Current Assignee: SHENZHEN GOODIX TECHNOLOGY CO., LTD.
- Current Assignee Address: CN Guangdong
- Agency: WPAT, P.C., Intellectual Property Attorneys
- Agent Anthony King
- Main IPC: H01S5/42
- IPC: H01S5/42 ; H01S5/00 ; G02B27/42 ; G02B27/10 ; H01S5/183

Abstract:
The present disclosure provides a vertical-cavity surface-emitting laser, structured light module, terminal comprising the structured light module, and method for projecting the structured light thereof. The structured light module includes a plurality of light sources and a single diffractive optical element (DOE); wherein the plurality of light sources simultaneously emit a plurality beams of invisible light to the single DOE, wherein the single DOE has a pseudo-random optical pattern groove, wherein the invisible light of each light source passes through the DOE and emits a beam of spectral encoded structured light, and the beam of structured light comprises a pattern corresponding to the pseudo-random optical pattern groove. The DOE projects an overall structured light that is formed by superimposing a plurality of beams of structured light, and there is an offset between patterns of different beams of structured light.
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