Progress in the design of chromatic null screens to test cylindrical parabolic concentrators

Josslyn Beltrán-Madrigal; Rufino Díaz-Uribe

doi:10.1117/12.903315

25 October 2011 Progress in the design of chromatic null screens to test cylindrical parabolic concentrators

Josslyn Beltrán-Madrigal, Rufino Díaz-Uribe

Proceedings Volume 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World; 80111R (2011) https://doi.org/10.1117/12.903315
Event: International Commission for Optics (ICO 22), 2011, Puebla, Mexico

Abstract

This paper shows the qualitative and quantitative results obtained on the test of cylindrical parabolic concentrators when the screens are designed using dot color changes to guarantee a better dot correspondence assignment and to make the optical test of the concentrator easier; the method allows to measure deformations from tenths of a millimeter to several millimeters, thus demonstrating that null screen method is good enough for testing surfaces with important deformations. On a second approximation, it is designed a null screen corresponding to the surface evaluated with the first one by fitting a fourth grade polynomial with crossed terms; with this, it is shown that the first test gets closer to the shape of the surface validating it.

Citation Download Citation

Josslyn Beltrán-Madrigal and Rufino Díaz-Uribe "Progress in the design of chromatic null screens to test cylindrical parabolic concentrators", Proc. SPIE 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World, 80111R (25 October 2011); https://doi.org/10.1117/12.903315

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