Multi-purpose resistive sensor for a heat-assisted magnetic recording device
US9959893B1 · kind B1 · utility
6Cited by
16References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2017 |
| Grant date | May 1, 2018 |
| Priority date | — |
| Expiry date | Jul 24, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus comprises a slider having an air bearing surface (ABS) and a near-field transducer (NFT) at or near the ABS. An optical waveguide is configured to couple light from a laser source to the NFT. A resistive sensor comprises an ABS section situated at or proximate the ABS and a distal section extending away from the ABS to a location at least lateral of or behind the NFT. The resistive sensor is configured to detect changes in output optical power of the laser source and contact between the slider and a magnetic recording medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.