Single rotating polygon mirror with v-shaped facets for a multiple beam ROS
US6292285A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1999 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Dec 20, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/123
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A single rotating polygon mirror with v-shaped facets having upper and lower reflective facet surfaces reflects and separates dual beams to two photoreceptors in a ROS. Each facet surface will have a different tilt angle. The two independently modulated beams will share common optical elements between the light sources and the mirror and may share a common f-theta scan lens. Two sets of two beams can be incident upon the facets on opposite sides of the rotating polygon mirror. The polygon mirror facet can also have three or four reflective facet surfaces to reflect and separate three or four independently modulated beams to three or four different photoreceptors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.