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Proceedings Paper

Advances In The Computation Of The Optical Transfer Function
Author(s): Abe Offner
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Paper Abstract

A recent advance makes feasible the evaluation of the physical optical transfer function at points which cover the entire frequency plane, or a selected portion of it, at any desired density. The vector frequencies at which the transfer function is evaluated are independent of the wavelength, the numerical aperture of the imagery, and the element size of the grid used to determine the locations of the points at which the pupil function is evaluated. Accurate results are achieved by interpolating in the piece-wise nearly linear phase of the pupil function. A table of maximum, minimum, and average response at each of a set of frequencies as a function of azimuth serves as a summary of the more detailed results. virtually, any optical system of interest regardless of its numerical aperture and/or the size of its aberrations can be evaluated by using this method with a 20 x 20 grid.

Paper Details

Date Published: 1 September 1968
PDF: 8 pages
Proc. SPIE 0013, Modulation Transfer Function, (1 September 1968); doi: 10.1117/12.946754
Show Author Affiliations
Abe Offner, The Perkin-Elmer Corporation (United States)


Published in SPIE Proceedings Vol. 0013:
Modulation Transfer Function
Robert R. Shannon; Richard J. Wollensak, Editor(s)

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