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BS ISO 14490-5:2021 – TC:2022 Edition

$186.33

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

Published By Publication Date Number of Pages
BSI 2022 50
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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
1 30444294
27 A-30396821
28 National foreword
32 Foreword
33 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
34 5 Test arrangement
5.1 General
35 5.2 Radiation source and condenser
5.3 Monochromator or set of filters
5.4 Collimator
5.5 Aperture stop
36 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
37 6.3 Further test methods
7 Precision of the measurement
8 Presentation of the results
9 Analysis
9.1 Effective transmittance for photopic vision
38 9.2 Effective transmittance for scotopic vision
10 Test report
40 Annex A (informative) Calibration procedure for the radiation detector/measuring instrument
43 Annex B (informative) Trichromatic coefficients and colour contribution index
48 Bibliography
BS ISO 14490-5:2021 - TC
$186.33