Scanning mirror position determination
US8173947B2 · kind B2 · utility
2Cited by
1References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2009 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Sep 28, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3129
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A scanning projector includes a mirror that scans in two dimensions, at least one of which is sinusoidal. A position sensor provides a position signal that represents an angular displacement of the mirror. The position signal is amplified by an amplifier with time variant characteristics. A beam position determination component compensates for the time variant characteristics of the amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.