directional lamp
electric lamp having at least 80 % luminous flux within a solid angle of π sr (corresponding to a cone with an angle of 120°)
e-ILV
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.
For advice on CIE Publications contact helpdesk@cie.co.at. Note the CIE Helpdesk cannot assist with technical enquiries.
17-27-075
Publication date: 2020-12
Copyright © CIE 2020. All Rights Reserverd.
Copyright © CIE 2020. All Rights Reserverd.