19 August 1996 Assessing the performance of binoculars and other visual afocal sights using a Strehl ratio criterion
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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.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Thomas L. Williams, Thomas L. Williams, Nigel D. Haig, Nigel D. Haig, } "Assessing the performance of binoculars and other visual afocal sights using a Strehl ratio criterion", Proc. SPIE 2775, Specification, Production, and Testing of Optical Components and Systems, (19 August 1996); doi: 10.1117/12.246781; https://doi.org/10.1117/12.246781
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