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BS ISO 14490-5:2021

BS ISO 14490-5:2021

$142.49

Optics and photonics. Test methods for telescopic systems – Test methods for transmittance

Published By Publication Date Number of Pages
BSI 2021 24
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This document specifies the test methods for the determination of the transmittance of telescopic systems and telescopic observational instruments.

PDF Catalog

PDF Pages PDF Title
2 National foreword
6 Foreword
7 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
8 5 Test arrangement
5.1 General
9 5.2 Radiation source and condenser
5.3 Monochromator or set of filters
5.4 Collimator
5.5 Aperture stop
10 5.6 Specimen mounting
5.7 Integrating sphere
5.8 Radiation detector
5.9 Selectable diaphragm as field stop
6 Procedure
6.1 Preparation of the test arrangement
6.2 Determination of the measurement values
11 6.3 Further test methods
7 Precision of the measurement
8 Presentation of the results
9 Analysis
9.1 Effective transmittance for photopic vision
12 9.2 Effective transmittance for scotopic vision
10 Test report
14 Annex A (informative) Calibration procedure for the radiation detector/measuring instrument
17 Annex B (informative) Trichromatic coefficients and colour contribution index
22 Bibliography

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BS ISO 14490-5:2021
$142.49