Method and apparatus for beam deflection using multiple beam scanning galvanometers
US6628442B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2000 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Apr 21, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/105
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention is a method and apparatus for deflecting a beam using multiple beam scanning galvanometers. One or more embodiments of the invention comprise a system for deflecting an energy beam comprising a first reflective surface for directing an incident beam, a first galvanometer coupled to the first reflective surface for rotating the first reflective surface about a first axis, a second reflective surface for directing the incident beam after directed by the first reflective surface, and a second galvanometer coupled to the second reflective surface for rotating the second reflective surface about a second axis, the second galvanometer positioned remote from the first galvanometer. In one or more embodiments, the system is a part of a laser film recorder. In such an embodiment, the incident beam comprises combined red, green and blue laser beams. The incident beam is directed by the second reflective surface at a film surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.