Thermal optical modulation method and device using alternating current
US4881798A · kind A · utility
5Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1989 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | Apr 14, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/0147
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical modulating method is provided which comprises heating a heat-sensitive medium comprising a polymeric substance and a liquid with a heat-generating resistor adjacent to the medium, thereby modulating the light incident on the medium at the heated region. The liquid may be heated to the critical solution temperature or higher of the constituent polymeric substance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.