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BSI 16/30345292 DC:2016 Edition

BSI 16/30345292 DC:2016 Edition

$13.70

BS ISO 14490-5. Optics and photonics. Test methods for telescopic systems. Part 5. Test methods for transmittance

Published By Publication Date Number of Pages
BSI 2016 23
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PDF Catalog

PDF Pages PDF Title
5 Contents Page
6 Foreword
9 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
10 5 Test arrangement
5.1 General
11 5.2 Source of radiation and condenser
5.3 Monochromator or set of filters
5.4 Collimator
5.5 Aperture stop
5.6 Specimen mounting
12 5.7 Veiling glare stop
5.8 Integrating sphere
5.9 Radiation detector
6 Procedure
6.1 Preparation of the test assembly
6.2 Determination of the measurement values
13 6.3 Further test methods
7 Precision of the measurement
8 Presentation of the results
9 Analysis
9.1 Effective transmittance for photopic vision
14 9.2 Effective transmittance for scotopic vision
10 Test report
15 Annex A (informative) Calibration procedure for the photoreceiver/measuring instrument
A.1 Control of proportionality of the photocurrent measured by the instrument to the illuminance on the light-sensitive surface of the photoreceiver
A.1.1 The measurements should be carried out by one of the following methods:
16 A.2 Checking the independence of readings of the indicating device in relation to the size of the illuminated surface of the photoreceiver in the case of constant light flux
18 Annex B (informative) Trichromatic coefficients and colour contribution index
B.1 Trichromatic coefficients
B.2 Values for the colour contribution index
20 B.3 CIELAB values
23 Bibliography

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BSI 16/30345292 DC
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