Multi-purpose resistive sensor for a heat-assisted magnetic recording device
US9747937B1 · kind B1 · utility
12Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 3, 2016 |
| Grant date | Aug 29, 2017 |
| Priority date | — |
| Expiry date | Nov 3, 2036 |
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.