Spatial light modulator.

摘要

A spatial light modulator in which light is directed towards one major surface of a liquid crystal layer l0 at an angle providing attenuated total reflection. The value of this attenuation is modulated by electrically induced refractive index changes in the liquid crystal layer. The liquid crystal layer may form a graded index reflector and incorporate a dye so that light penetrating deeper into the layer is more heavily attenuated.