Optical head
US5513121A · kind A · utility
9Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1993 |
| Grant date | Apr 30, 1996 |
| Priority date | — |
| Expiry date | Dec 27, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/08
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical head has a stationary optical system and a movable optical system. The stationary optical system includes a semiconductor laser located in a holding member with an opening, and a beam splitter for guiding light emitted from the light source, to the outside of the holding member through the opening. The sheet member contacts both the beam splitter and that portion of the holding member which surrounds the opening thereof, thereby sealing the opening. Further, the holding member is movably secured to the frame of the movable optical system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.