Heat-assisted magnetic recording head
US7609591B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2006 |
| Grant date | Oct 27, 2009 |
| Priority date | — |
| Expiry date | Apr 9, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A heat-assisted magnetic recording head mounted on an end of a slider having an Air Bearing Surface (“ABS”) for recording data on a recording medium. The heat-assisted magnetic recording head includes a magnetic path forming unit that generates a magnetic field for recording the data, a light source that emits light heating a local region of the recording medium, a waveguide located on a side of the magnet path forming unit to transmit the light emitted from the light source, an optical path conversion unit that changes a direction of the light transmitted from the waveguide to the local region of the recording medium, and a nano-aperture that generates an enhanced near-field effect by converting an energy distribution of the light transmitted via the optical path conversion unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.