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  • BSI
    BS ISO 9358:1994 Optics and optical instruments. Veiling glare of image forming systems. Definitions and methods of measurement
    Edition: 1995
    $411.69
    / user per year

Description of BS ISO 9358:1994 1995

This International Standard adopts both the veiling glare index (VGI) and the glare spread function (GSF) as measures of the veiling glare characteristics of optical and electrooptical imaging systems. Laboratory measurement techniques are described in general terms and recommendations are made regarding the performance of the main subunits of the equipment.

The measurement techniques described in this International Standard are chiefly valid for the visual spectral range. For adjacent spectral ranges, modifications of these techniques will possibly be necessary.

Standard methods of specifying conditions of test and of expressing the results are given, while to assist in the intercomparison of VGI figures, standard test conditions are specified.

This International Standard also gives guidelines for the operation of measuring equipment such that accurate results can be achieved.

Results of veiling glare index measurements made using equipment which does not conform in detail to the configurations described in this International Standard are accepted as valid, provided the method of measurement is substantially similar (i.e. measures the ratio of the radiance in the image of the black area to the radiance in a surrounding bright field) and provided the test results can be correlated to the required accuracy with results obtained on equipment which conforms strictly to this International Standard.



Standard NumberBS ISO 9358:1994
TitleOptics and optical instruments. Veiling glare of image forming systems. Definitions and methods of measurement
StatusUnder Review
Publication Date1995-02-15
Identical National Standard OfISO 9358:1994
DescriptorsOptical measurement, Optical properties of materials, Optics, Glare, Optical instruments, Testing conditions, Lenses, Test equipment
ICS37.020 Optical equipment
CommitteeCPW/172
ISBN0 580 23841 5
PublisherBSI
Pages28

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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