Optical imaging/display CCD light valve and method
US5227886A · kind A · utility
14Cited by
8References
43Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1991 |
| Grant date | Jul 13, 1993 |
| Priority date | — |
| Expiry date | Feb 19, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A combined optical imaging/display device employs a liquid crystal light valve (LCLV) with a charge coupled device (CCD) input, and a photosensitive CCD or charge injection device (CID) array for receiving an input image and developing a corresponding signal pattern. The signal pattern is applied as an input to the CCD after amplifying it and manipulating it as desired. The CCD and photosensitive array are provided on a common substrate; their cells may be arranged in alternating rows or in separate arrays. The invention is applicable to active vision enhancement goggles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.