Optical scanning system with compensation for unwanted image rotation during scanning
US4202597A · kind A · utility
11Cited by
7References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 30, 1977 |
| Grant date | May 13, 1980 |
| Priority date | — |
| Expiry date | Dec 30, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N3/09
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In optical scanning systems loss in spatial resolution can result in coupling systems incorporating off axis concave mirrors by virtue of image rotation. In such systems compensation can be introduced for this image rotation by inclining the axis of oscillation of the scanning mirror at a small angle to the plane of that mirror.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.