PLZT shutter
US5029989A · kind A · utility
11Cited by
2References
33Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 6, 1990 |
| Grant date | Jul 9, 1991 |
| Priority date | — |
| Expiry date | Feb 6, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B9/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A PLZT based shutter system reduces flare produced by reflective surfaces normally associated with PLZT based and other SLR shutter systems by eliminating a diffraction mirror and using highly reflective electrodes directly on the PLZT element to function both as the reflective mirror and as the electrodes to produce the E field in the PLZT element. The invention has an improved performance by reducing flare and has a reduced parts count improving its manufacturability and reliability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.