Patent ID: 7605785

Claim:
A method for improving uniformity from a liquid crystal spatial light modulator comprising: a) obtaining an original code value for a first pixel; b) assigning a conditioned code value to the first pixel according to the original code value, wherein the conditioned code value is determined by a process of: i) characterizing the luminance response of a sample pixel of the liquid crystal spatial light modulator; ii) defining an interpolation zone for code values bounded between a minimum luminance code value an a threshold code value for the sample pixel; wherein the threshold value corresponds to a luminance level at which, for higher code values, there is a generally linear relationship of luminance to code values; iii) assigning the code value at which the sample pixel yields minimum luminance from the spatial light modulator as the conditioned code value for the first pixel when the original code value is at its minimum luminance value; or calculating an interpolated value as the conditioned code value for the first pixel when the original code value lies within the interpolation zone; or applying a corrected gray-level value as the conditioned code value for the first pixel when the original code value is at or above the threshold code value; and c) modulating the first pixel of the spatial light modulator according to the conditioned code value.