Abstract
The Optical Transfer Function (OTF) is an important part of modern optics and is very useful for optical system design and evaluation. A non-Fourier transform OTF method has been recently proposed. It formulates the OTF based on the propagation of light in the frequency domain, combining the intuitiveness of geometrical optics and the accuracy of wave optics. To advance the non-Fourier transform OTF method, in this paper, we first applied it to a single convex lens and analyzed the influence of the optical pupil function on interference pairs to reveal the mechanism of how aberration affects the non-Fourier transform OTF. It was found that the aperture of the lens affects the utilization efficiency of the interference pair, and the aberration of the lens affects the utilization quality of the interference pair. Then we derived the generalized pupil function based on a two-lens system in applying this new non-Fourier transform OTF method to the analysis of complex optical systems.
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