1969•Journal of the Optical Society of AmericaRequires access
Lenses, Wave Optics, and Eikonal Functions*
A. Walther
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Abstract
An approximate solution to the problem of a light wave propagating through a lens is obtained by systematically replacing the integrals required to solve the problem by their stationary-phase approximation. This approach is shown to yield (1) geometrical optics in its eikonal form, and (2) a diffraction theory of image formation applicable to lenses with large apertures and fields.