Patent ID: 6317112
Filing Date: 2001-11-13
Classification: G09G

Abstract:
A system for producing modulated light having a certain gray scale level capability during a given period of time, the given period of time being made up of a plurality of time segments, the system comprising:a spatial light modulator including an array of light modulating pixels switchable between different light modulating states so as to act on light in different ways;an illuminator that, during one portion of the time period, directs light of a first intensity into the spatial light modulator during each of a plurality of time segments having different durations of time and, during an other portion of the time period, directs light of different intensity than the first intensity into the spatial light modulator during at least one other time segment; anda switching arrangement that switches the pixels to desired light modulating states for each time segment of the period of time;wherein light is directed into the spatial light modulator without substantial interruption during two consecutive time segments in the time period.