A method of finding the three-dimensional distribution of light in the focal region of small- f -number lenses that have arbitrary surface curvatures is described. The Fresnel approximation is not used, and the effects of aberration are included. A comparison of the numerical results with experimental measurements for a commercially obtained plano–convex lens is provided.
© 2000 Optical Society of America
Shekhar Guha, "Focusing by small-f-number lenses in the presence of aberrations," Opt. Lett. 25, 1409-1411 (2000)