Optical head used in optical information processor
US5044718A · kind A · utility
26Cited by
7References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 16, 1990 |
| Grant date | Sep 3, 1991 |
| Priority date | — |
| Expiry date | Feb 16, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/124
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical head having a plane waveguide for propagating light emitted from a light source, a grating coupler disposed midway of said plane waveguide for converting light emitted from said light source into light which is propagated in said plane waveguide, and a diffraction grating which is different from said grating coupler for diffracting light emitted from said light source before the light is incident to above-mentioned grating coupler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.