Light-beam scanning device
US7394583B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2005 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | Apr 25, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/085
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light-beam scanning device includes a base plate having a torsion beam portion formed therein, and a mirror portion supported by the torsion beam portion and adapted to be oscillated. The light-beam scanning device includes one of a piezoelectric member, a magnetostrictive member and a permanent magnet member, which is fixed to or formed as a portion of the base plate. The mirror portion supported by the torsion beam portion is oscillated by a plate wave that is induced in the base plate by applying a voltage or electric field to the piezoelectric, magnetostrictive or permanent magnet member. The light-beam scanning device can efficiently generate a torsional oscillation in the mirror portion in a simplified structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.