Patent ID: 7876405
Filing Date: 2011-01-25
Classification: G02F

Abstract:
1. A reflective spatial light modulator which has a light input/output surface and controls phases of an incident light, passing through said light input/output surface from a predetermined direction, and a reflected light, passing through said light input/output surface from a direction opposite that of the incident light, said reflective spatial light modulator further comprising: a liquid crystal layer arranged at a position where the incident light having passed through said light input/output surface arrives, said liquid crystal layer being configured by filling a liquid crystal comprised of a light modulating material into a space between two alignment films which are positioned in succession along a propagating direction of the incident light having passed through said light input/output surface; a reflecting layer arranged at a side opposite said light input/output surface with respect to said liquid crystal layer, said reflecting layer reflecting the incident light, which has passed through said liquid crystal layer, as reflected light propagating in the direction opposite the propagating direction of the incident light; and a phase shift layer arranged between said liquid crystal layer and said reflecting layer, said phase shift layer shifting phases of the incident light and the reflected light at an alignment film-liquid crystal interface in said liquid crystal layer.