Optical head with solid immersion lens and varying cross section coil
US6407884B1 · kind B1 · utility
12Cited by
7References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1999 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Apr 14, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/109
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical recording head is provided which includes a slider body having a leading edge. A void is formed in the slider body to receive a sphere of optically transparent material. The sphere is inserted into the void such that a portion of the sphere protrudes from the slider body. The protruding portion is lapped to be coplanar with a surface of the slider body to form a near-field lens. A mesa may be formed onto the lapped portion and may include a coil. The slider body, mesa, near-field lens, and coil may be formed in one batch process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.