Deformable curvature mirror
US6464364B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2001 |
| Grant date | Oct 15, 2002 |
| Priority date | — |
| Expiry date | Jan 25, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/0128
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A deformable curvature mirror capable of controlled deformation by applying electrical voltages to electrode segments on the back of the mirror. Two plates of an electro-restrictive material, such as PZT or PMN, are jointed together with at least one conductive layer sandwiched therebetween. One plate has an outer conductive layer and a mirrored surface on the outer conductive layer. The conductive layers are electrically grounded. The other plate has a pattern of a plurality of electrode segments on the outer surface with each electrode segment having a separate electrical terminal for applying a variable electrical voltage thereto for separately transmitting a variable current through each electrode segment and through at least the other plate for causing variable expansion of the plate and thereby selectively deforming that plate and, in turn, the deformable curvature mirror.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.