IEVref:
845-10-30
ID:
Language:
en
Status:
Obsolete
Term:
cut-off angle (of a luminaire)
Synonym1:
Synonym2:
Synonym3:
Symbol:
Definition:
angle, measured up from nadir, between the vertical axis and the first line of sight at which the lamps and the surfaces of high luminance are not visible
Publication
date
:
1987
Source
Replaces:
Internal notes:
CO remarks:
TC/SC remarks:
VT remarks:
Domain1:
Domain2:
Domain3:
Domain4:
Domain5:
angle, measured up from nadir, between the vertical axis and the first line of sight at which the lamps and the surfaces of high luminance are not visible