Optical device, optical unit and imager
US7375898B2 · kind B2 · utility
2Cited by
2References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 31, 2007 |
| Grant date | May 20, 2008 |
| Priority date | — |
| Expiry date | Jan 31, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/673
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical device comprises: a liquid container that contains water-based liquid and oil-based liquid that are different in refractive index from each other and immiscible with each other to have respective optical-transmission properties so that light can transmit in a predetermined optical-axis direction; a coat film that covers at least part of an inner surface of the liquid container and has a hydrophilic/hydrophobic property changing with temperature; and a temperature regulator that regulates temperature of the coat film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.