Optical disc head including a bowtie grating antenna and slider for optical focusing, and method for making
US7177236B2 · kind B2 · utility
15Cited by
15References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2002 |
| Grant date | Feb 13, 2007 |
| Priority date | — |
| Expiry date | Sep 13, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/22
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A slider system have been developed to aid in the spacing between read/write heads and the storage medium, and a grating antenna amplifier has been developed to improve illumination spot size and polarization characteristics. The grating antenna can be attached to a grayscale slider to obtain a distance between the illumination spot and antenna that lies in the near field region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.