Modulation Transfer Function (MTF) System For Image Intensifier Units

T. L. Williams

doi:10.1117/12.931842

29 October 1981 Modulation Transfer Function (MTF) System For Image Intensifier Units

T. L. Williams

Proceedings Volume 0274, Assessment of Imaging Systems II; (1981) https://doi.org/10.1117/12.931842
Event: Assessment of Imaging Systems: Visible and Infrared, 1981, Reading, United Kingdom

Abstract

An equipment designed specifically for testing image intensifiers, including those which incorporate micro-channel plates, is described. The equipment consists of a source unit which projects an image of a narrow slit on the input face of the tube and an analyser unit which effectively does a Fourier analysis of the slit image formed on the output face of the tube. The MTF versus spatial frequency can be plotted on an x-y recorder or read off directly from a digital meter. A facility is provided for rapidly selecting four preset spatial frequencies for use particularly in production testing. The factors which affect the design of an equipment for testing image intensifier tubes are considered in relation to this particular instrument. Examples of measurements made with the equipment are given.

Citation Download Citation

T. L. Williams "Modulation Transfer Function (MTF) System For Image Intensifier Units", Proc. SPIE 0274, Assessment of Imaging Systems II, (29 October 1981); https://doi.org/10.1117/12.931842

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