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29 January 2007 Device calibration method for optical light modulator
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Due to subtle misalignment of optical components in the fabrication process, images projected by an optical light modulator have severe line artifact along the direction of the optical scan. In this paper, we propose a novel methodology to calibrate the modulator and generate the compensate image for the misaligned optical modulator in order to eliminate the line artifact. A camera system is employed to construct Luminance Transfer Function (LTF) that characterizes the optical modulator array. Spatial uniformity is obtained by redefining the dynamic range and compensating the characteristic curvature of the LTF for each optical modulator array element. Simulation results show significant reduction in the visibility of line artifact.
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Yousun Bang, Aron Baik, Dusik Park, Injae Yeo, and Jaeho Han "Device calibration method for optical light modulator", Proc. SPIE 6493, Color Imaging XII: Processing, Hardcopy, and Applications, 64930D (29 January 2007); doi: 10.1117/12.704890;

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