Hartmann-type hybrid null screens for testing a fast plano-convex aspherical condenser

Gabriel Castillo-Santiago; Jesús DelOlmo-Márquez; Maximino Avendaño-Alejo; Víctor Moreno-Oliva; Edwin Román-Hernández; Martín Jiménez-Rodríguez; Osvaldo Ponce-Hernández

doi:10.1117/12.2677490

4 October 2023 Hartmann-type hybrid null screens for testing a fast plano-convex aspherical condenser

Gabriel Castillo-Santiago, Jesús DelOlmo-Márquez, Maximino Avendaño-Alejo, Víctor Moreno-Oliva, Edwin Román-Hernández, Martín Jiménez-Rodríguez, Osvaldo Ponce-Hernández

Author Affiliations +

Proceedings Volume 12671, Advances in Solar Energy: Heliostat Systems Design, Implementation, and Operation; 126710H (2023) https://doi.org/10.1117/12.2677490
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Conference Poster

Abstract

We design two different Hartmann type null screens based on an exact ray trace for testing a fast plano-convex aspherical condenser. The first null screen is designed for testing the external convex surface or periphery area for the condenser by reflection. We have implemented an exact ray trace assuming a point source placed along the optical axis, emitting a bundle of rays, which are reflected by the surface under test, to obtain a non-uniform array of spots, which are printed on paper sheet and wrapped on a plastic cylinder fabricated by using additive manufacture. Subsequently, by reversibility Principle’s after by reflection we obtain a uniform array pattern displayed at the detection plane. Alternatively, to evaluate the whole area for the condenser, the second null screen is designed for testing the central convex area for the condenser by refraction. Thus, we have implemented an exact ray trace assuming an incident plane wavefront, these rays are refracted through the lens under test, to obtain a non-uniform array of drop spots, which are printed on plastic sheet and placed in front of the lens under test. Finally, assuming the reversibility Principle’s after by refraction we obtain a uniform array pattern displayed at the detection plane. For this method, we have called Hartmann type hybrid null screens.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Gabriel Castillo-Santiago, Jesús DelOlmo-Márquez, Maximino Avendaño-Alejo, Víctor Moreno-Oliva, Edwin Román-Hernández, Martín Jiménez-Rodríguez, and Osvaldo Ponce-Hernández "Hartmann-type hybrid null screens for testing a fast plano-convex aspherical condenser", Proc. SPIE 12671, Advances in Solar Energy: Heliostat Systems Design, Implementation, and Operation, 126710H (4 October 2023); https://doi.org/10.1117/12.2677490

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