Field serviceable laser pen for optical disk drives
US6781941B1 · kind B1 · utility
1Cited by
8References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1999 |
| Grant date | Aug 24, 2004 |
| Priority date | — |
| Expiry date | Jul 21, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A laser source is located in a relatively cool accessible location. Because there is adequate heat dissipation for the laser source, changes in the laser wavelength that arise from laser temperature changes are minimized. The invention described here includes the use of optical fiber to deliver light from the laser source. The laser reliability is improved because of reduced temperature and temperature fluctuations are experienced by the laser source. Because the laser source can be placed outside the drives hermetic seal, the laser can be easily replaced in the field, if required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.