Laminated proximity field optical head and optical information recording and reproducing device
US5946281A · kind A · utility
40Cited by
10References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 5, 1997 |
| Grant date | Aug 31, 1999 |
| Priority date | — |
| Expiry date | Sep 5, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0943
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides an optical recording device which is of ultra-high density and is small in size. It comprises a subminiature optical head comprising in turn a semiconductor laser, a photodetector, grating lenses, a cover layer, and a floating slider on which the optical head is mounted. This configuration can provide an optical recording device which is of ultra-high recording density and is subminiature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.