Optical deflecting unit, optical scanning unit, image forming apparatus, and method of producing optical unit
US6657765B2 · kind B2 · utility
64Cited by
53References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2002 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Mar 1, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/105
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical deflecting unit includes a torsion mirror which is pivotable about an axis and has a deflecting reflection surface which receives a light beam at an incident angle inclined with respect to a plane which is perpendicular to the axis and the deflecting reflection surface, and at least one fixed mirror surface confronting the torsion mirror and arranged so that the light beam is reflected between the torsion mirror and the at least one fixed mirror surface a plurality of times. A moving direction of a reflection position of the light beam on the torsion mirror in a sub scan direction reverses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.