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Proceedings Paper

Calibration method for equivalent extinction ratio of polarized pixel in integrated micropolarizer array camera
Author(s): Bin Feng; Zelin Shi; Haizheng Liu; Yaohong Zhao; Jianting Liu
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Paper Abstract

Equivalent extinction ratio and polarization orientation are two significant parameters representing the performance of a polarized pixel in an integrated micropolarizer array camera. With manufacturing and integrating errors of the micropolarizer array, equivalent extinction ratios are nonuniform and polarization orientations of polarized pixels deviate from their nominal values. Measuring the equivalent extinction ratio and the polarization orientation of each polarized pixel by rotating a polarizer at a tiny step is extremely time-consuming and even inaccurate. Therefore, this paper proposes a calibration method for the equivalent extinction ratio and the polarization orientation of each polarized pixel. Its principle is derived by theorizing the relationship between an orientation of a linearly polarized incident light and its digital output of a polarized pixel. In experiment, this derived principle is applied to an integrated micropolarizer array camera. Experimental result proves that calibrated equivalent extinction ratios generally vary from 4.5 to 10, with a mean of 7.939 and a standard variation of 1.053.

Paper Details

Date Published: 15 November 2017
PDF: 5 pages
Proc. SPIE 10605, LIDAR Imaging Detection and Target Recognition 2017, 106051B (15 November 2017); doi: 10.1117/12.2287591
Show Author Affiliations
Bin Feng, Shenyang Institute of Automation (China)
Key Lab. of Opto-electronic Information Processing (China)
Xi'an Technological Univ. (China)
Zelin Shi, Shenyang Institute of Automation (China)
Key Lab. of Opto-electronic Information Processing (China)
Haizheng Liu, Shenyang Institute of Automation (China)
Key Lab. of Opto-electronic Information Processing (China)
Yaohong Zhao, Shenyang Institute of Automation (China)
Key Lab. of Opto-electronic Information Processing (China)
Jianting Liu, Xi'an Technological Univ. (China)


Published in SPIE Proceedings Vol. 10605:
LIDAR Imaging Detection and Target Recognition 2017
Yueguang Lv; Weimin Bao; Weibiao Chen; Zelin Shi; Jianzhong Su; Jindong Fei; Wei Gong; Shensheng Han; Weiqi Jin; Jian Yang, Editor(s)

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