Optical device for projection of optical beams
US8228579B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 18, 2008 |
| Grant date | Jul 24, 2012 |
| Priority date | — |
| Expiry date | Jul 3, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3129
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical device is provided for projecting a light beam. The device comprises a first planar reflector movable about a first axis is disposed in a path of a focused light beam for deflecting the incident light beam; a concave reflective surface fixed in position located in the path of the deflected light beam, has a circular shape extending along at least one of its axis and is spaced apart from the planar reflector by a distance which is approximately equal to the radius of that circular shape; and a second planar reflector moveable about a second axis located in a plane substantially vertical to a plane comprising the first axis and wherein the second planar reflector is positioned in the path of the light reflected by the concave reflective surface such that the light beam is projected onto a target plane with a substantially flat field of focus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.