Semiconductor laser source unit
US4953171A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 1989 |
| Grant date | Aug 28, 1990 |
| Priority date | — |
| Expiry date | May 11, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/024
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A semiconductor laser source unit includes a semiconductor laser chip emitting a laser beam, a base member supporting the semiconductor laser chip, and a protection cover mounted on the base member so as to seal the semiconductor laser chip. The protection cover has a lid portion formed at an end thereof and an opening at an opposed end thereof facing the base member. The lid portion has a window. The semiconductor laser source unit also has a single aspherical lens fastened to the lid portion of the protection cover so as to cover the window formed in the lid portion. The single aspherical lens collimates the laser beam emitted from the semiconductor laser chip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.