| CPC H04N 9/312 (2013.01) [G03H 1/26 (2013.01); H04N 9/3111 (2013.01); H04N 9/3161 (2013.01); G03H 2225/32 (2013.01)] | 19 Claims |
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1. An imaging system, comprising:
a reflective LCOS display forming a spatial light modulator, wherein the spatial light modulator is divided into at least two regions, each of the at least two regions including an array of pixels and wherein the spatial light modulator modulates a phase of incoming light that is received at the spatial light modulator, and wherein the spatial light modulator is a phase-only spatial light modulator that modulates a phase and not an amplitude of the incoming light, a first region of the at least two regions of the spatial light modulator having a first liquid crystal cell gap that differs in size from a second liquid crystal cell gap of a second region of the at least two regions, such that:
a path of first light of a first color reflected from the first region traverses the first liquid crystal cell gap twice, thereby applying a first amount of phase modulation to the first light; and
a path of second light of a second color, different from the first color, reflected from the second region traverses the second liquid crystal cell gap twice, thereby applying a second amount of phase modulation, different from the first amount, to the second light; and
a control unit coupled to the spatial light modulator, wherein the control unit controls a voltage across the array of pixels of each of the at least two regions, and wherein the voltage across the array of pixels of the first region differs from the voltage across the array of pixels of the second region, the control unit controlling the voltage across the array of pixels of the first region to output an image of the first color at a different time from a time when the control unit controls the voltage across the array of pixels of the second region to output an image of the second color.
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