Alignment features for heat assisted magnetic recording transducers
US8339905B2 · kind B2 · utility
17Cited by
14References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2005 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | May 26, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus comprises an optical transducer positioned adjacent to a storage medium and including a waveguide and a grating for coupling light into the waveguide, a light source transmitting light to the grating, and a detector for detecting a portion of the light, wherein the detected portion of the light has a magnitude that varies in response to the amount of light coupled into the waveguide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.