Optical scanning device and image forming apparatus
US7006271B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2001 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | Aug 13, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/124
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A coupling lens couples a beam emitted from a light source. A light deflector deflects the beam from the coupling lens at a uniform angular velocity. A line-image imaging optical system is disposed between the coupling lens and light deflector, and causes the beam to image a line image long along main scanning directions on or in the vicinity of a deflection reflective surface of the light deflector. A scanning and imaging optical system causes the beam deflected by the light deflector to image a beam spot on a medium to be scanned. In an optical housing, the light source, coupling lens, light deflector, line-image imaging optical system and scanning and imaging optical system are disposed, and contained. A plurality of holding and fixing locations are provided for holding and fixing a light-source part including the light source and coupling lens is provided in at least one of the light-source part and optical housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.