A Technique For Effectively Measuring MTF Of Image Intensifiers At Low Output Levels

W.Travis Walton; Sidney Weiser

doi:10.1117/12.953863

1 March 1974 A Technique For Effectively Measuring MTF Of Image Intensifiers At Low Output Levels

W.Travis Walton, Sidney Weiser

Proceedings Volume 0042, Image Intensifiers: Technology, Performance, Requirements, and Applications; (1974) https://doi.org/10.1117/12.953863
Event: Annual Technical Symposium, 1973, San Diego, United States

Abstract

A unique instrumentation technique has been developed by industry and is in regular application at the Night Vision Laboratory to repeatably measure the modulation transfer function of image intensifiers operating at output light levels well below that visible. Two of the most severe problems associated with such measurements, very poor signal-to-noise ratio and difficulty of normalization, have been overcome while maintaining an instrument that may be set up, adjusted, and operated quickly by personnel with a skill level comparable to that needed for routine MTF measurements of lenses at high light levels. These advances were made possible by the inclusion of a digital signal averager, a unique film pattern, and innovative electronic interfacing and analization circuitry. Both the fundamental instrumentation concept and the details of how the practical instrument was realized are discussed in this paper.

Citation Download Citation

W.Travis Walton and Sidney Weiser "A Technique For Effectively Measuring MTF Of Image Intensifiers At Low Output Levels", Proc. SPIE 0042, Image Intensifiers: Technology, Performance, Requirements, and Applications, (1 March 1974); https://doi.org/10.1117/12.953863

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