Structure light module using vertical cavity surface emitting laser array and folding optical element
US11280988B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2018 |
| Grant date | Mar 22, 2022 |
| Priority date | — |
| Expiry date | Nov 16, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/254
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A structure light module comprises: a VCSEL substrate comprising a VCSEL array comprising a plurality of individual VCSELs; a first spacer disposed on the VCSEL substrate; a first wafer level lens comprising a glass substrate and at least a replicated lens on a first surface of the glass substrate disposed on the first spacer; a FOE disposed on the first wafer level lens; a second spacer disposes on the FOE; a second wafer level lens comprising a glass substrate and at least a replicated lens on a first surface of the glass substrate disposed on the second spacer; a third spacer disposed on the second wafer level lens; a DOE disposed on the third spacer, where a structure light is projected from the DOE on a target surface for 3D imaging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.