Optical element
US4832466A · kind A · utility
25Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1986 |
| Grant date | May 23, 1989 |
| Priority date | — |
| Expiry date | Apr 10, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F13/24
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical element comprises a pair of plates between which an optical modulation liquid layer is sandwiched, the optical modulation liquid layer exhibiting a light scattering property caused by suspension of fine particle polymer when heated and exhibiting transparency caused by dissolution of fine particle polymer when not heated, the change of such light scattering property to transparency being reversible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.