Patent · US Active

Structured light projection module based on VCSEL array light source

US11445164B2 · kind B2 · utility

0Cited by

4References

16Claims

0Family size

Assignee

Orbbec Inc. · CN

Inventors

Zhenzhong Xiao · Tangxia, CN
Xing Xu · Lo Wu, CN
Xu Chen · Shandong, CN

Key dates

Filing date	Jan 20, 2021
Grant date	Sep 13, 2022
Priority date	—
Expiry date	Jan 20, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH01S5/005
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

The present disclosure provides a structured light projection module comprising: a Vertical-Cavity Surface-Emitting Laser (VCSEL) array light source that includes a semiconductor substrate and at least two VCSEL sub-arrays arranged thereon. The at least two VCSEL sub-arrays include VCSEL light sources. The structured light projection module further includes a diffractive optical element (DOE) that includes at least two DOE sub-units. The DOE sub-units are respectively corresponding to the VCSEL sub-arrays and configured to project multiple copies of light beams emitted by the corresponding at least two VCSEL sub-arrays.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.