25 September 2014 Caustic surface of a plane wavefront refracted by a smooth arbitrary surface
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We study the formation of caustic produced by smooth arbitrary surfaces considering a plane wavefront propagating parallel to the optical axis and impinging on the refracting surface. We have already seen that the shape of the caustic surface can represent the monochromatic aberrations that we call image errors, furthermore the shape of the caustic can be modified by changing the parameters of the lens in such a way that if the caustic surfaces is vanished the optical system produces a perfect image, on the other hand for a caustic possessing a large area it could be applied to design no-imaging optical systems. The shape of the caustic depends only on the indices of refraction involved in the process of refraction, the refracting surface which is formed by smooth arbitrary plano-convex lens. We provide an analytic equation for the caustic surface after refraction of a plane wave from every rotationally symmetric surface..
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Maximino Avendaño-Alejo, Maximino Avendaño-Alejo, "Caustic surface of a plane wavefront refracted by a smooth arbitrary surface", Proc. SPIE 9192, Current Developments in Lens Design and Optical Engineering XV, 919208 (25 September 2014); doi: 10.1117/12.2062995; https://doi.org/10.1117/12.2062995

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