Patent ID: 7929191

Claim:
A device for spatially modulating at least a portion of a first light beam emitted from a light source and for receiving a second light beam from outside, said device comprising: a spatial light modulator for spatially modulating at least a portion of the first light beam, wherein the spatial light modulator includes a plurality of modulating elements that modulate an intensity of a reflected light beam according to a modulation signal; and a two-dimensional light sensing device for receiving the second light beam, wherein the spatial light modulator and the light sensing device are integrally provided on a same substrate, such that the plurality of modulating elements are arranged over an interlay insulation film covering a plurality of pixels of the light sensing device on the substrate, the spatial light modulator and the light sensing device are arranged on the same side of the substrate, and the light sensing device receives the second light beam incident through the spatial light modulator.