Scanning optical system with irregular deflecting surface correction
US4756584A · kind A · utility
28Cited by
3References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 27, 1987 |
| Grant date | Jul 12, 1988 |
| Priority date | — |
| Expiry date | Jan 27, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0031
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A scanning optical system includes a light source, first and second focusing optical systems, and a light deflector. The second focusing optical system serves to focus a light beam deflected by the light deflector onto a medium to be scanned. The second focusing optical system comprises a single anamorphic lens, a single spherical lens having positive refracting power, and a single lens having a toric surface, successively arranged in order from the light deflector toward the medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.