Semiconductor laser array device
US4856015A · kind A · utility
12Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1988 |
| Grant date | Aug 8, 1989 |
| Priority date | — |
| Expiry date | Jun 7, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/12042
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A semiconductor laser array device has a relatively wide light-emitting area with many semiconductor lasers and a shielding layer selectively disposed with respect to peripheral regions of the light-emitting area such that the rate of heat emission from the center part can be increased relative to that from the peripheral regions. Temperature distribution on the light-emitting area can thus be made uniform and laser light can be emitted from the entire laser emitting area under a phase-synchronized condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.