System and method for preventing thermal induced failures in vertical cavity surface emitting laser (VCSEL) array
US12068585B2 · kind B2 · utility
0Cited by
4References
18Claims
0Family size
Inventors
Key dates
| Filing date | Nov 7, 2018 |
| Grant date | Aug 20, 2024 |
| Priority date | — |
| Expiry date | Jul 7, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/06825
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention discloses a VCSEL array that is divided into at least a first and a second area. The first area covers the center of the array and is surrounded by the second area. The first area would experience higher temperature than the second area after the VCSELs in both areas are turned on for a given time period. VCSELs in the first area are electrically connected to a first metal layer portion. VCSELs in the second area are electrically connected to a second metal layer portion. The first and second metal layer portions are electrically insulated from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.