Light scanning device with polarizing device to make light transmission more uniform
US5009472A · kind A · utility
32Cited by
4References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 31, 1987 |
| Grant date | Apr 23, 1991 |
| Priority date | — |
| Expiry date | Dec 31, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/283
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light scanning device comprising a light source portion equipped with a semiconductor laser, a deflecting system for deflecting light beam emitted by the light source portion, a scanning lens for imaging light beam deflected by the deflecting system on a subject to be scanned, and a polarizing device for changing a polarized state of light beam so that the vibrating plane of an electric field vector of light beam entering into the scanning lens does not become perpendicular to a plane of incidence which includes an optical axis of the scanning lens and an incident direction of the light beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.