Optical beam scanner
US5303316A · kind A · utility
11Cited by
7References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 22, 1989 |
| Grant date | Apr 12, 1994 |
| Priority date | — |
| Expiry date | Dec 22, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/187
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical device having a substrate with a waveguide layer on a surface thereof and a grating in the waveguide. The grating has a period such as to deflect light passing along the waveguide out of the optical device. The angle at which the light is emitted from the waveguide can be varied by varying the index of refraction of the material of the waveguide under the grating. This can be achieved by applying a voltage across the waveguide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.