Disclosed is an image detection system having a photodetector, e.g. a photovoltaic cell, a photoconductor sheet, and a means, e.g., a liquid crystal light valve or an electrochromic light valve, matrix light valve having a plurality of individually addressable light valve cells. The image detection system...http://www.google.com.au/patents/US4603356?utm_source=gb-gplus-sharePatent US4603356 - Imaging system with light valve and photodetector
