1 June 1974 An Instrument For Production Testing Of Telescopes, Binoculars And Sights Using MTF, Glare And Transmission Criteria
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Proceedings Volume 0046, Image Assessment and Specification; (1974); doi: 10.1117/12.954001
Event: Image Assessment and Specification, 1974, Rochester, United States
Abstract
The choice of suitable criteria for production testing of binoculars and similar afocal systems is discussed and the conclusion is arrived at that the measurement of MTF at a single spatial frequency in all azimuths, on-axis and for one field point, in conjunction with measurements of "scatter index" (glare) and axial transmission factor forms the basis of an adequate production test. An instrument is described embodying this test philosophy. The instrument is designed so that it can be used by relatively unskilled workshop personnel and acceptance or rejection of a system under test is indicated by means of lights. The results of preliminary field trials of the instrument are described.
© (1974) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
T L Williams, "An Instrument For Production Testing Of Telescopes, Binoculars And Sights Using MTF, Glare And Transmission Criteria", Proc. SPIE 0046, Image Assessment and Specification, (1 June 1974); doi: 10.1117/12.954001; https://doi.org/10.1117/12.954001
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KEYWORDS
Modulation transfer functions

Spatial frequencies

Image analysis

Sensors

Collimators

Linear filtering

Signal detection

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