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Proceedings Paper

Study of the differential constant-angle interferometric system for measuring arbitrary angles and its self-calibration
Author(s): Guijun Ji; Xiaotang Hu; Chun-Hai Wang; Guoxiong Zhang
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Paper Abstract

In this paper, a differential constant angle interferomethc system for measuring arbitrary angles, based on the principle of the differential constant angle interferometer in combination with the laser interferometer for measuring small angles, is proposed. The system comprises a two-stage precise rotary table, an optical polygon, two differential constant angle interferometers, a laser interferometer for measuring small angles and a data processing system for interferometric fringes. In accordance with the characteristics of the differential constant angle interferometric system for measuring arbitrary angles, a theory of self-calibration is proposed including determining the equivalent parameters of the laser interferometer for measuring small angles, calibrating the optical polygon by using the method of the correlative differential constant angle and so on. High accuracy, self-calibration ability and new measuring principles, are the distinguished features of the differential constant angle interferometric system for measuring arbitrary angles. A series of experiments show that the differential constant angle interferometric system for measuring arbitrary angles gives an accuracy better than 0.3" in measuring arbitrary angles ranging from deg; to 360°.

Paper Details

Date Published: 22 September 1993
PDF: 6 pages
Proc. SPIE 2101, Measurement Technology and Intelligent Instruments, (22 September 1993); doi: 10.1117/12.156398
Show Author Affiliations
Guijun Ji, Tianjin Univ. (China)
Xiaotang Hu, Tianjin Univ. (China)
Chun-Hai Wang, Tianjin Univ. (China)
Guoxiong Zhang, Tianjin Univ. (China)


Published in SPIE Proceedings Vol. 2101:
Measurement Technology and Intelligent Instruments

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