Two-dimensional scanning device having compensation for scanned image strain
US4314154A · kind A · utility
42Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1980 |
| Grant date | Feb 2, 1982 |
| Priority date | — |
| Expiry date | Jan 3, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04744
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A two-dimensional scanning device provided with a first deflector for deflecting a collimated beam, a second deflector for deflecting the incident beam in a direction orthogonal to the deflection direction of the first deflector, a scanning lens disposed between the first deflector and the second deflector, a scanning surface for imaging the scanning beam from said scanning lens through the second deflector, and a device for moving the scanning lens in the direction of its optic axis in synchronism with the rotation of the second deflector to thereby obtain a strain-free two dimensional scanning figure on the scanning surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.