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Proceedings Paper

Assessing the performance of binoculars and other visual afocal sights using a Strehl ratio criterion
Author(s): Thomas L. Williams; Nigel D. Haig
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Paper Abstract

There are several problems is using MTF to measure the performance of visual afocal sights. Earlier research by one of the authors has shown that a good correlation exists between a subjective assessment of performance and the Strehl intensity ratio of visual sights. The paper outlines some of the advantages in using this as a criterion of image quality and describes equipment for measuring the line Strehl ratio of binoculars both on and off axis.

Paper Details

Date Published: 19 August 1996
PDF: 12 pages
Proc. SPIE 2775, Specification, Production, and Testing of Optical Components and Systems, (19 August 1996); doi: 10.1117/12.246781
Show Author Affiliations
Thomas L. Williams, Sira Electro-Optics Ltd. (United Kingdom)
Nigel D. Haig, Defence Research Agency Fort Halstead (United Kingdom)

Published in SPIE Proceedings Vol. 2775:
Specification, Production, and Testing of Optical Components and Systems
Anthony E. Gee; Jean-Francois Houee, Editor(s)

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