Integrated optical head
US4887255A · kind A · utility
48Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1987 |
| Grant date | Dec 12, 1989 |
| Priority date | — |
| Expiry date | Aug 20, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/1245
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An integrated optical head includes a substrate and an optical waveguide formed on a surface of one side of a substrate. Light is directed to the optical waveguide and a grating structure is provided for deflecting light propagating in the optical waveguide toward the substrate. A distributed refractive index lens is formed in the substrate for condensing the light passing through the substrate after the deflection toward an article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.