Optical scanning apparatus
US8223812B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 13, 2008 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Jul 9, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04755
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical scanning apparatus includes a light source configured to emit a plurality of laser beams from a plurality of light emitting parts, a beam shaping unit configured to shape the laser beams emitted from the light source, a detection unit provided outside the light source and configured to detect an amount of a laser beam that is not shaped by the beam shaping unit in the laser beams emitted from the light source in an area outside the beam shaping unit, and a light amount control unit configured to control amounts of the laser beams emitted from the light source based on a detection result detected by the detection unit. The detection unit includes a plurality of light-sensitive elements. The light amount control unit controls the light amounts of the laser beams emitted from the light source based on detection results of the light-sensitive elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.