Optical system with magnetorheological fluid
US6751004B2 · kind B2 · utility
2Cited by
9References
32Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 31, 2002 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | Jan 14, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/091
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical system includes a layer of magneto rheological (MR) fluid having a surface exposed to air or vacuum. The MR fluid has a first state wherein the surface is reflective, and a second state wherein the surface is non-reflective. A magnetic actuator selectively applies a magnetic field to the MR fluid to actuate the fluid to the second state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.