Optical scanning device, image forming apparatus, and liquid crystal element
US8031362B2 · kind B2 · utility
1Cited by
9References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 5, 2006 |
| Grant date | Oct 4, 2011 |
| Priority date | — |
| Expiry date | Apr 30, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04791
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disclosed optical scanning device scans an object scanning surface with a light beam projected from a light source and traveling through an optical system. The optical scanning device includes a liquid crystal element configured to modulate a phase. The liquid crystal element is driven by electric signals and provided on a light path between the light source and the object scanning surface. The liquid crystal element generates different power components in a main scanning direction and a sub scanning direction under temperature variations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.