Raster scanning system utilizing overfilled polygon facet design
US4941721A · kind A · utility
13Cited by
5References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1989 |
| Grant date | Jul 17, 1990 |
| Priority date | — |
| Expiry date | Jun 1, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0988
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a raster output scanning (ROS) printer, an overfilled polygon design is enabled by using a high power laser diode to compensate for low efficiency of an overfilled design and by using an aspheric lens assembly to provide a flat beam illumination profile at each polygon facet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.