Chinese Optics Letters, 2007, 5 (7): 403, Published Online: Jul. 11, 2007   

An improved method of angle measurement with a position sensitive detector Download: 737次

Author Affiliations
1 Information Optics Laboratory, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
2 Graduate School of the Chinese Academy of Sciences, Beijing 100039
Abstract
An improved method of angle measurement is proposed based on a parallel plate interferometer. A position detection system is incorporated into a parallel plate interferometer in order to realize large deflection angle measurement. A reflecting mirror is introduced for increasing the measurement resolution. In experiments, a deflection angle of a measured target was measured within about 3 deg. with high accuracy. And as a phase modulating interferometer, it was used to measure a small angular displacement with a repeatability of 5.5*10^(-8) rad.

Defeng Zheng, Xiangzhao Wang, Feng Tang. An improved method of angle measurement with a position sensitive detector[J]. Chinese Optics Letters, 2007, 5(7): 403.

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