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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