Magneto-optic recording system and method
US5859814A · kind A · utility
31Cited by
15References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1997 |
| Grant date | Jan 12, 1999 |
| Priority date | — |
| Expiry date | Aug 29, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B11/1058
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magneto-optic recording system employing near-field optics which includes a read/write head having a stylus comprising a pair of crossed tapered prisms made of a material having a high index of refraction closely adjacent to the recording medium to provide light coupling between slits at the ends of the prisms and the recording medium. The length of the prism slits being greater than one-half the effective wavelength inside the material filling the prism of the light transmitted by the prisms to transmit all light entering the waveguide to the tapered end and the width being a fraction of a wavelength of the light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.