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Proceedings Paper

Profile Measurement Of Aspheric Surfaces By Laser Beam Reflection
Author(s): R. Diaz-Uribe; R. Pastrana-Sanchez; A. Cornejo-Rodriguez
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Paper Abstract

By observing the reflection of a laser beam from an optical surface, it is possible to infer certain geometrical properties of the surface, such as its radius of curvature, its conic constant, its profile and some errors of fabrication; the method depends on the type of surface. With this approach, we have developed a method for measuring the longitudinal aberration, X, and the angle, g, with respect to the optical axis, of the normals of a conic surface1). Although this information is sufficient to describe the surface, it was necessary to develop a formulation for calculating, from those parameters, more evident variables such as the sagitta, Z, and the semidiameter, S (see figure).

Paper Details

Date Published: 1 January 1987
PDF: 2 pages
Proc. SPIE 0813, Optics and the Information Age, (1 January 1987); doi: 10.1117/12.967296
Show Author Affiliations
R. Diaz-Uribe, FC-UNAM (Mexico)
R. Pastrana-Sanchez, ECFM-UAP (Mexico)
A. Cornejo-Rodriguez, INAOE (Mexico)


Published in SPIE Proceedings Vol. 0813:
Optics and the Information Age

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