Multiple wavelength laser beam scanning system
US5296958A · kind A · utility
28Cited by
18References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 29, 1992 |
| Grant date | Mar 22, 1994 |
| Priority date | — |
| Expiry date | May 29, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Laser beam scanning system combines multiple light beams, each of differing wavelengths, to achieve a multiple wavelength scan exposure of a medium, or to increase throughput by writing plural lines simultaneously, or to provide one or more scanning beams of selected wavelength. A polarizing beam splitting prism of the Thompson type is employed as a multiple input beam combiner. The two input laser beam components can be made selectively coincident or closely parallel to form an output beam which is then redirected in a scanning motion and focused to an exposure plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.