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Proceedings Paper

Null screens type Hartmann to test simple lenses
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Paper Abstract

In order to evaluate either qualitative or quantitatively the shape of fast plano-convex aspheric lenses, a method to design null screens type Hartmann is proposed. The null screens are formed with non-uniform spots, which allows to have uniform images at detection's plane. The screens are printed on a foil sheet and placed in front of the lens under test, they are illuminated with a collimated monochromatic beam propagating along the optical axis, in such a way that through the process of refraction will form a uniform spot patterns which are recorded at a predefined plane of detection. Finally, processing properly its image recorded we could be able to get a quantitative evaluation of the lens under test. The designs of these null screens are based on the equations of the caustic surface produced by refraction. A preliminary test for a fast plano-convex aspheric lens with F=# = 0:8 is presented in this work. This method could also be applied to alignment of optical systems.

Paper Details

Date Published: 27 August 2015
PDF: 8 pages
Proc. SPIE 9575, Optical Manufacturing and Testing XI, 95751H (27 August 2015); doi: 10.1117/12.2188863
Show Author Affiliations
Gabriel Castillo-Santiago, Univ. Nacional Autónoma de México (Mexico)
Diana Castán-Ricaño, Univ. Nacional Autónoma de México (Mexico)
Alfredo Gozález-Galindo, Univ. Nacional Autónoma de México (Mexico)
Maximino Avendaño-Alejo, Univ. Nacional Autónoma de México (Mexico)
Rufino Díaz-Uribe, Univ. Nacional Autónoma de México (Mexico)

Published in SPIE Proceedings Vol. 9575:
Optical Manufacturing and Testing XI
Oliver W. Fähnle; Ray Williamson; Dae Wook Kim, Editor(s)

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