We study the formation of caustic surfaces formed in both convex-plano and plano-convex aspheric lenses by considering a plane wave incident on the lens along the optical axis. Using the caustic formulas and a paraxial approximation we derive expressions to evaluate the spherical aberration at third-order and also provide a formula to reduce it, where the first-order aspheric term is given in a simply analytic equation. Furthermore, we redefine the method to evaluate the circle of least confusion for a positive lens as a function of all parameters involved in the process of refraction through the aspheric lenses.
© 2013 Optical Society of America
Original Manuscript: December 13, 2012
Revised Manuscript: January 30, 2013
Manuscript Accepted: February 1, 2013
Published: February 22, 2013
Maximino Avendaño-Alejo, "Caustics in a meridional plane produced by plano-convex aspheric lenses," J. Opt. Soc. Am. A 30, 501-508 (2013)