The scalar three-dimensional optical transfer function is derived without using the paraxial approximation. The weak-object transfer function for a partially coherent system with equal condenser and objective apertures and the coherent transfer function for a confocal transmission system are of identical form. The coherent transfer function of a confocal reflection system is also derived. Both uniform angular illumination and systems obeying the sine condition are considered. In all cases the transfer functions can be expressed analytically.
CITATION STYLE
Sheppard, C. J. R., Kawata, Y., Kawata, S., & Gu, M. (1994). Three-dimensional transfer functions for high-aperture systems. Journal of the Optical Society of America A, 11(2), 593. https://doi.org/10.1364/josaa.11.000593
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