Optical scanning device, image forming apparatus, and optical scanning method
US6657761B2 · kind B2 · utility
26Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2001 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | May 18, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/02495
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical scanning device condenses a beam deflected by a light deflector, by a scanning and imaging lens toward a surface to be scanned to form a beam spot thereon, and scans the surface to be scanned by the beam spot. At least one lens of the scanning and imaging lens is configured so that a lens body thereof is held by a holding frame, wherein a rib surface at an end in a longitudinal direction of the holding frame is inclined so that a ghost light generated as a result of the deflected beam being reflected by the end in the longitudinal direction of the holding frame is changed in light path in a sub-scan direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.