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17 September 2018 Caustic surfaces produced by a plane wavefront refracted through cemented doublet lenses
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We study the formation of caustic surfaces produced by cemented doublet lenses, considering a plane wavefront propagating parallel to the optical axis and neglecting the refractive index of the optical cement between two simple lenses which are in contact. We have already seen that the shape of caustic surfaces can represent the monochromatic aberrations that we call image errors; furthermore the shape of the caustic can be modified by changing the parameters of design for two conic lenses in contact, in such a way that if we are able to vanish the caustic, the optical system produces either an image without spherical aberration or longitudinal chromatic aberration reduced, commonly known as spherochromatism. The shape of the caustic surface is a function of the indices of refraction involved in the process of refraction, and all the parameters of two simple lenses. We provide an analytic equation for the caustic surfaces in a meridional plane and an example is presented.
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Maximino Avendaño Alejo, M. Carmen López-Bautista, and Luis Castañeda "Caustic surfaces produced by a plane wavefront refracted through cemented doublet lenses", Proc. SPIE 10745, Current Developments in Lens Design and Optical Engineering XIX, 107450E (17 September 2018);


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