Optical scanning method and apparatus
US4568982A · kind A · utility
5Cited by
5References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 9, 1984 |
| Grant date | Feb 4, 1986 |
| Priority date | — |
| Expiry date | Apr 9, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/1135
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a high resolution optical scanning method and apparatus. Light from a source, such as a laser, is focused onto a flat, rotating mirror. The reflected light is made incident upon a stationary elliptical mirror such that the real or virtual source is at one focus of the ellipse and the points on the line to be scanned are at the other focus along the lateral dimension of the mirror. A large useful angle of rotation is thereby achieved for each line scan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.