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Proceedings Paper

White light displacement sensor by spectro-polarization modulator
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Paper Abstract

We propose a white light displacement sensor using a novel spectro-polarization modulator which generates spiral liner polarized light sorted along wavelength concentrically. It consists of a polarizer, a retarder with high order retardation, and a quarter wave plate. If we set the spiral polarizer after the spectro-polarization modulator, we can observe spectroscopic color concentrically. A displacement measurement method is proposed using chromatic aberration method and white light interferometer.

Paper Details

Date Published: 12 October 2006
PDF: 5 pages
Proc. SPIE 6382, Two- and Three-Dimensional Methods for Inspection and Metrology IV, 638205 (12 October 2006); doi: 10.1117/12.689279
Show Author Affiliations
Yukitoshi Otani, Tokyo Univ. of Agriculture and Technology (Japan)
Toshitaka Wakayama, Saitama Medical Univ. (Japan)
Dmitry Orlov, Tokyo Univ. of Agriculture and Technology (Japan)
Norihiro Umeda, Tokyo Univ. of Agriculture and Technology (Japan)
Toru Yoshizawa, Saitama Medical Univ. (Japan)


Published in SPIE Proceedings Vol. 6382:
Two- and Three-Dimensional Methods for Inspection and Metrology IV
Peisen S. Huang, Editor(s)

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