Optical scanning device, and apparatus provided with such a device, employing scanning element having reflective measuring reference face
US5789743A · kind A · utility
16Cited by
5References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 6, 1997 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Feb 6, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0901
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical scanning device is described, which is provided with a scanning element having a reflecting measuring reference face (31), and a position detection system (80) which supplies, inter alia, a measuring signal (S.sub.z) for the position of the scanning element in a direction perpendicular to the reference face. By implementing the scanning element in a very thin form and by correcting said measuring signal (S) by means of the polygon bending signal (S.sub.b) supplied by the position detection system, a very rapid and accurate scanning can be realized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.