Aperture Assessment

Edwin R. Hill

doi:10.1117/12.933829

29 December 1982 Aperture Assessment

Edwin R. Hill

Proceedings Volume 0347, Application of Optical Instrumentation in Medicine X; (1982) https://doi.org/10.1117/12.933829
Event: Application of Optical Instrumentation in Medicine X, 1982, New Orleans, United States

Abstract

As first indicated by Otto Schade ¹ and now commonly acknowledged, the formation of an optical image results when a set of random events is sampled over a finite space for a finite time. Silver halide grains do the sampling in film image formation by absorbing light and "remembering" it for extended periods of time. With the human eye, sampling is done by the individual rods and cones on the retina and the memory or exposure time is on the order of a tenth of a second.

Citation Download Citation

Edwin R. Hill "Aperture Assessment", Proc. SPIE 0347, Application of Optical Instrumentation in Medicine X, (29 December 1982); https://doi.org/10.1117/12.933829

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