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Proceedings Paper

Digitalization measurement of large radius of curvature by noncontact Newton's rings
Author(s): Yongying Yang; Yongmo Zhou; Hangxing Wu
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Paper Abstract

A Digitalization measurement method of large radius of curvature is presented in this paper. Non-contact Newton's rings are formed by an interferometer. The interferogram is imaged in CCD array. The scale of image pixels corresponding to Newton's rings that related to the radius of curvature is obtained by scanning fringes or other optical methods. The radius of curvature of spherical surface detected that can be both convex and concave is up to 25 Meter. The accuracy of measurement is better than 0.3 percent.

Paper Details

Date Published: 6 October 2000
PDF: 6 pages
Proc. SPIE 4231, Advanced Optical Manufacturing and Testing Technology 2000, (6 October 2000); doi: 10.1117/12.402826
Show Author Affiliations
Yongying Yang, Zhejiang Univ. (China)
Yongmo Zhou, Zhejiang Univ. (China)
Hangxing Wu, Zhejiang Univ. (China)

Published in SPIE Proceedings Vol. 4231:
Advanced Optical Manufacturing and Testing Technology 2000
Li Yang; Harvey M. Pollicove; Qiming Xin; James C. Wyant, Editor(s)

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