Null screens type Hartmann to test simple lenses

Gabriel Castillo-Santiago; Diana Castán-Ricaño; Alfredo Gozález-Galindo; Maximino Avendaño-Alejo; Rufino Díaz-Uribe

doi:10.1117/12.2188863

27 August 2015 Null screens type Hartmann to test simple lenses

Gabriel Castillo-Santiago, Diana Castán-Ricaño, Alfredo Gozález-Galindo, Maximino Avendaño-Alejo, Rufino Díaz-Uribe

Proceedings Volume 9575, Optical Manufacturing and Testing XI; 95751H (2015) https://doi.org/10.1117/12.2188863
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

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.

Citation Download Citation

Gabriel Castillo-Santiago, Diana Castán-Ricaño, Alfredo Gozález-Galindo, Maximino Avendaño-Alejo, and Rufino Díaz-Uribe "Null screens type Hartmann to test simple lenses ", Proc. SPIE 9575, Optical Manufacturing and Testing XI, 95751H (27 August 2015); https://doi.org/10.1117/12.2188863

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