Optical head using micro-machined elements
US6798729B1 · kind B1 · utility
12Cited by
38References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1999 |
| Grant date | Sep 28, 2004 |
| Priority date | — |
| Expiry date | Feb 8, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B11/10569
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical head utilizes a micro-machined element in combination with a light source and a lens to write and read data onto a storage disk. The micro-machined element may include a steerable micro-machined mirror or a micro-actuator. A beam of laser light transmitted from the light source to the optical head and a reflected light from the storage disk is altered by a movement of the micro-machined element. In this manner a focused optical spot is scanned back and forth in a direction which is approximately parallel to the radial direction of the storage disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.