li shijie, chen qiang, wu gaofeng, et al. Discrete phase calculation of computer generated hologram for off-axis aspheric surface test[J]. High Power Laser and Particle Beams, 2011, 23: 2-3.
Citation:
li shijie, chen qiang, wu gaofeng, et al. Discrete phase calculation of computer generated hologram for off-axis aspheric surface test[J]. High Power Laser and Particle Beams, 2011, 23: 2-3.
li shijie, chen qiang, wu gaofeng, et al. Discrete phase calculation of computer generated hologram for off-axis aspheric surface test[J]. High Power Laser and Particle Beams, 2011, 23: 2-3.
Citation:
li shijie, chen qiang, wu gaofeng, et al. Discrete phase calculation of computer generated hologram for off-axis aspheric surface test[J]. High Power Laser and Particle Beams, 2011, 23: 2-3.
The phase of sample point should be calculated to design the computer generated hologram(CGH) for testing off-axis aspheric surface. The normal of the geometric center of off-axis aspheric surface was seen as the detection optical axis through shift and rotation. Then the phase distribution on off-axis aspheric surface was studied by ray tracing, and a calculation method of discrete phase was deduced, as well as the formulas for phase computation in three-dimensional coordinate system. The validity of this method is proven by calculating and comparing the phase distribution of a rotational symmetry aspheric surface. The results show that this method is correct, and the calculation accuracy can meet the requirement of CGH for off-axis aspheric surface test.
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