Optical device with phase-locked diodelaser array
US4904068A · kind A · utility
18Cited by
7References
14Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 2, 1988 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | Mar 2, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/14
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical device includes a phase-locked diodelaser array (10), a collimator lens (17), and behind the collimator lens a prism system (30, 34) of at least one prism to broaden the far field radiation pattern in the lateral plane (XY) and a spatial filter (19) to select a favored mode. The laser radiation is concentrated into a single, round and diffraction limited spot (V).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.