The e-ILV provides free access to all the terms and definitions contained in the international standard CIE S 017:2020 ILV: International Lighting Vocabulary, 2nd edition.
To search for another term please use "Back to the list" to return to the main page or the e-ILV.
For the complete set of terms and definitions CIE S 017:2020 can be purchased from the CIE Webshop. Members of a CIE National Committee or Associate National Committee have access to a 66,7 % discount on the purchase price of the standard.
primary photometric standard
device designed to establish the photometric base unit and to calibrate photometric transfer standards
Note 1 to entry: This entry was numbered 845-05-01 in IEC 60050-845:1987.
Note 2 to entry: This entry was numbered 17-983 in CIE S 017:2011.