System for holding plural light beams in predetermined relative positions
US4644160A · kind A · utility
21Cited by
1References
12Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Dec 11, 1984 |
| Grant date | Feb 17, 1987 |
| Priority date | — |
| Expiry date | Dec 11, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/19
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Herein disclosed is a system using a plurality of laser beams, in which the positions of the respective laser beams are detected as the differences between the outputs of detectors of an optical detector arrangement and controlled by the difference signals so that they may be held mutually precisely. This system finds its suitable application to an optical disk recording system or a laser beam printer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.