Controllable surface filter
US5619366A · kind A · utility
264Cited by
10References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 1995 |
| Grant date | Apr 8, 1997 |
| Priority date | — |
| Expiry date | May 30, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/105
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Generally and in one form of the invention this is a periodic surface filter comprising at least one element at a surface of the filter and electronic controls to change the optical characteristics of the element. Other methods and devices are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.