Recording medium having planar aperture array and fabrication method thereof, and near-field optical recording/reproducing device using same and method therefor
US6459659B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1999 |
| Grant date | Oct 1, 2002 |
| Priority date | — |
| Expiry date | Jul 28, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/266
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A recording media for recording/reproducing information by using an near-field, overcoming a diffraction limit, and having an ultra-high recording density, and a fabrication method thereof, and a recording/reproducing device are disclosed. The optical recording medium includes a planar aperture array which can generate the near-field light, an information recording layer, and a spacer maintaining a predetermined gap between the planar aperture array and the recording layer, the gap being sealed from an external environment. The optical recording/reproducing device is controlled by a macro-servo and a micro-servo, thereby recording/reproducing the information by using the planar aperture array thereof. As a result, the present invention overcomes a diffraction limit, achieves the ultra-high recording density, and thus records a large amount of information even on the small area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.