Light modulating device
US4848879A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1987 |
| Grant date | Jul 18, 1989 |
| Priority date | — |
| Expiry date | Jun 22, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K15/129
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
This specification discloses a light modulating device comprising a liquid medium whose physical properties are variable by heat, and a heat-generating element for heating the liquid medium to such a degree that boiling does not occur to the liquid medium. The specification also discloses a light modulation apparatus comprising a liquid medium whose physical properties are variable by heat, a heat-generating element for heating the liquid medium to such a degree that boiling does not occur to the liquid medium, and a optical system for taking out one of a light flux modulated by the variation in physical properties of the liquid medium and a light flux not modulated by said variation from a state in which the light fluxes are mixedly present.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.