Optical reflecting mirror, and optical scanner and image forming apparatus including same
US8605344B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2009 |
| Grant date | Dec 10, 2013 |
| Priority date | — |
| Expiry date | Mar 19, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/1135
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A rectangular plate optical reflecting mirror is provided in an optical scanner. The optical reflecting mirror reflects an optical beam onto a surface to be scanned. The optical reflecting mirror includes a center portion and end portions in a longitudinal direction. The center portion has a greater thickness than that of the end portions. Accordingly, rigidity of the optical reflecting mirror can be increased, and its characteristic frequency can be set at a high value. Thus, resonance of the optical reflecting mirror can be prevented from occurring as a result of vibration of a housing which vibrates with a plurality of vibration modes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.