Control system for oscillating optical element in scanners
US6206290A · kind A · utility
17Cited by
24References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1998 |
| Grant date | Mar 27, 2001 |
| Priority date | — |
| Expiry date | Mar 6, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10643
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A miniature light beam scanner includes a moving optical element formed on a substrate with electrodes for driving the optical element and sensing its motion as indicated by a varying capacitance between the optical element and the substrate. Control and driver circuitry responsive to the variation in capacitance drives the optical element to move at a resonant frequency and predetermined amplitude.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.