Structured light projection module based on VCSEL array light source
US10931935B2 · kind B2 · utility
3Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 17, 2019 |
| Grant date | Feb 23, 2021 |
| Priority date | — |
| Expiry date | May 17, 2039 |
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.