Light modulating microdevice and method
US6025951A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1996 |
| Grant date | Feb 15, 2000 |
| Priority date | — |
| Expiry date | Nov 27, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to spatial light modulators (SLM) for amplitude and phase modulation of incident light. A "flexure" hinge which is provided between the SLM's substrate and micromirror comprises integral hinged sections which allow for the micromirror to tilt or to move in a piston-like fashion relative to the substrate in response to an electrostatic force. The hinge is particularly advantageous for large mirrors. In addition, the hinge can provide improved heat sinking capability over previously reported SLM hinge designs based on torsion bars and cantilever beams. The flexure hinge has sufficient mechanical flexibility that the SLM actuation voltage required is not excessively high. The flexure hinge has many applications, the preferred ones being a SLM for modulating high-energy beams and a SLM for optical channel switching.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.