Light scanning apparatus and image forming apparatus using the same
US7136208B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2005 |
| Grant date | Nov 14, 2006 |
| Priority date | — |
| Expiry date | Oct 26, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/125
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light scanning apparatus capable of printing with a high quality and an image forming apparatus using the same are obtained. The light scanning apparatus is provided with an incidence optical system for guiding a light beam emitted from a light source part to a deflection part; an imaging optical system provided with a diffracting surface having a power at least in a sub-scanning section that guides the light beam deflected by the deflection part on a surface to be scanned; and a surface inclination correction function, in which a principal ray of the light beam is always positioned outside of a main scanning section during scanning. In the light scanning apparatus, each element is set so as to satisfy each conditional expression.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.