Optical scanning device for reducing a dot position displacement at a joint of scanning lines
US7068296B2 · kind B2 · utility
41Cited by
18References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2002 |
| Grant date | Jun 27, 2006 |
| Priority date | — |
| Expiry date | Mar 26, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/123
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In this optical scanning device, a plurality of scanning optical systems are arranged in a main scanning direction. Each of the scanning optical systems includes a deflecting unit performing an optical scanning by oscillation. Scanning frequencies of the deflecting units are substantially equal to one another. Each of the deflecting units is provided with means for varying the scanning frequency. The scanning frequency of each of the deflecting units is set midway between a maximum value and a minimum value of a resonance frequency intrinsic to the deflecting unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.