Laser scanning apparatus using a fan style grating plate
US4761660A · kind A · utility
8Cited by
4References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1986 |
| Grant date | Aug 2, 1988 |
| Priority date | — |
| Expiry date | Dec 15, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04794
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A laser scanner apparatus using a laser reference beam that is directed to and scans a grating plate which is used for producing a data clock for the apparatus. The grating plate has a line grating formed by a plurality of lines that are equally spaced along the scan of the grating plate by the laser reference beam. The plurality of lines, if extended, intersect at a single point. The grating plate can have more than one such line grating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.