Optical scanning device
US8125699B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2007 |
| Grant date | Feb 28, 2012 |
| Priority date | — |
| Expiry date | Oct 28, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB81B2201/042
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical scanning device of the invention includes: a substrate; a torsion bar portion which is connected to the substrate; a mirror portion which is supported by the torsion bar portion; a drive source which causes the substrate to oscillate; and a light source which projects light onto the mirror portion, where the mirror portion resonates and vibrates in accordance with a vibration imparted to the substrate by the drive source, a direction of reflection light from the light projected onto the mirror portion from the light source changes in accordance with the vibration of the mirror portion, the drive source is provided on a portion of the substrate at a distance from a connected portion where the substrate is connected to the torsion bar portion, and a substrate shape control device which controls the shape of the substrate itself is provided on the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.