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LIQUID CRYSTAL BASED POLARIMETRIC DEVICE, CALIBRATION METHOD OF THE POLARIMETRIC DEVICE, AND POLARIMETRIC MEASUREMENT METHOD
LIQUID CRYSTAL BASED POLARIMETRIC DEVICE, CALIBRATION METHOD OF THE POLARIMETRIC DEVICE, AND POLARIMETRIC MEASUREMENT METHOD
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机译：基于液晶的极化装置，极化装置的校准方法和极化测量方法
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摘要
PROBLEM TO BE SOLVED: To provide a polarimetric device having one or more of modulation of polarized light without using a mechanical moving member, providing of a sufficiently extensive acceptable angle in an application to image formation, a simple and compact design including optimization for error propagation, and rapid data acquisition of real-time measurement.;SOLUTION: This device comprises a polarization state generator 4 including a polarizer 5 for linearly polarizing an incident light beam 2 along the polarization direction in an exciting area 1 for emitting optical beam, a polarization state detector 8 including an analyzer 9 and a detection means 10, and a processing device 11. The polarization state generator 4 (PSG) and the polarization state detector 8 (SPD) each has a first and a second liquid crystal elements 13 and 14. Each LCj element 13 of the PSG has an extraordinary axis making an angle θj with respect to the polarization direction, and a phase retardation δj between its ordinary and extraordinary axes. Each liquid crystal element 14 is positioned in reverse order in the PSG with respect to each LCj element of the PSG, with θ'j equal to θj, and a retardation δ'j equal to -δj.;COPYRIGHT: (C)2004,JPO&NCIPI
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