Electrophoretic switch for a light pipe
US5317667A · kind A · utility
28Cited by
13References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1992 |
| Grant date | May 31, 1994 |
| Priority date | — |
| Expiry date | Nov 23, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/026
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophoretic light switch is provided for controlling light in a light pipe having a transparent inner conductor, an outer conductor and a solution containing charged particles. Light is absorbed by the solution when the particles are attracted to the inner conductor causing the light intensity in the light pipe to be reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.