Optical scanning device and image forming apparatus
US8368736B2 · kind B2 · utility
8Cited by
11References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2010 |
| Grant date | Feb 5, 2013 |
| Priority date | — |
| Expiry date | Dec 2, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/1876
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical scanning device includes four light sources, a pre-deflector optical system, a polygon mirror, an optical scanning system, etc. The optical scanning system includes deflector-side scanning lenses made of glass, imaging-surface-side scanning lenses made of resin, polarized light splitters, and reflecting mirrors. The deflector-side scanning lenses, the imaging-surface-side scanning lenses, the polarized light splitters, and the reflecting mirrors are arranged in this order on an optical path of light going from the polygon mirror toward drum-shaped photosensitive elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.