IEVref:
845-25-087
ID:
Language:
en
Status:
Standard
Term:
beam spread
Synonym1:
Synonym2:
Synonym3:
Symbol:
Definition:
total angle within which the illuminance on a plane normal to the axis of a beam exceeds 10 % of the maximum illuminance
Note 1 to entry: Sometimes the beam spread is calculated at 50 % of the maximum illuminance.
Publication
date
:
2020-12
Source
Replaces:
Internal notes:
CO remarks:
TC/SC remarks:
VT remarks:
Domain1:
Domain2:
Domain3:
Domain4:
Domain5:
total angle within which the illuminance on a plane normal to the axis of a beam exceeds 10 % of the maximum illuminance
Note 1 to entry: Sometimes the beam spread is calculated at 50 % of the maximum illuminance.