Recommendations for measurement of the veiling glare index of lenses and optical systems.
NORMA vydána dne 27.11.1973
Označení normy: BS 4995:1973
Datum vydání normy: 27.11.1973
Počet stran: 14
Přibližná hmotnost: 42 g (0.09 liber)
Země: Britská technická norma
Kategorie: Technické normy BS
Laboratory techniques for measuring VGI are described in general terms and recommendations are made regarding the performance of the main subunits of the equipment. Standard methods of specifying conditions of test and of expressing the results. Gives guidelines for the operation of VGI measuring equipment to facilitate the obtaining of accurate results. Status: Under Review