Light beam scanning apparatus
US6611279B2 · kind B2 · utility
5Cited by
4References
26Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 1, 2001 |
| Grant date | Aug 26, 2003 |
| Priority date | — |
| Expiry date | Nov 29, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K15/1219
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The sensor for converting a light beam into an electric signal is formed by a pair of symmetrical saw-toothed patterns with a narrowed width for marginally located teeth. The patterns are arranged interdigitally on the surface to be scanned or at a position equivalent to the surface. The difference of the output signals from the patterns is integrated to determine the scanning position of the light beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.