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Proceedings Paper

A Technique For Effectively Measuring MTF Of Image Intensifiers At Low Output Levels
Author(s): W.Travis Walton; Sidney Weiser
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Paper 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.

Paper Details

Date Published: 1 March 1974
PDF: 10 pages
Proc. SPIE 0042, Image Intensifiers: Technology, Performance, Requirements, and Applications, (1 March 1974); doi: 10.1117/12.953863
Show Author Affiliations
W.Travis Walton, Sperry Rand Sensor Group (United States)
Sidney Weiser, Weiser/Robodyne Corp. (United States)

Published in SPIE Proceedings Vol. 0042:
Image Intensifiers: Technology, Performance, Requirements, and Applications

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