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Proceedings Paper

Lens Decenter Test Based On Laser Beam Interference
Author(s): Genrui Cao; R. E. Parks; Philip Lam
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Paper Abstract

A new method of accurately testing lens decenter based on the interference of two coherent point sources is presented. The tilt error between two surfaces of the lens can be greatly magnified and detected using two-beam nonlocalized interference fringes produced by a stationary reference surface and the lens surface under test on a rotating air-bearing table. This method has some obvious advantages over existing methods, i.e. , high accuracy, independence of lens size and shape, simplicity, and ease of operation. Both the theoretical analysis and the experiments show that if the radius of curvature of the reference surface and the spacing between the reference surface and the surface under test are properly selected, then a tilt error of about 1 arc-sec on the lens surface can be detected even by the naked eye.

Paper Details

Date Published: 6 November 1987
PDF: 11 pages
Proc. SPIE 0776, Metrology of Optoelectronic Systems, (6 November 1987); doi: 10.1117/12.940451
Show Author Affiliations
Genrui Cao, Beijing Institute of Technology (China)
R. E. Parks, University of Arizona (United States)
Philip Lam, Tucson Optical Research Corp. (United States)


Published in SPIE Proceedings Vol. 0776:
Metrology of Optoelectronic Systems
Edward M. Granger, Editor(s)

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