Method and apparatus for driving light-modulating elements
US6795227B2 · kind B2 · utility
0Cited by
4References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 20, 2002 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Apr 13, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/0808
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
One embodiment disclosed relates to a system for modulating a plurality of micro-electromechanical (MEM) devices. The system includes a means for providing an amplitude modulation signal to each MEM device at a base frequency and a means for providing a width modulation signal at the base frequency. In addition, the system includes a clock means for providing a higher-frequency clock signal with a frequency that is a multiple of the base frequency. In this embodiment, the width modulation signal for each MEM device indicates at least one position on the higher-frequency clock signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.