# 17-21-096

point brilliance

Epb

quantity involved in the visual observation of a source of light when viewed directly from the distance where its apparent diameter just becomes inappreciable

Note 1 to entry: The point brilliance is measured by the illuminance produced by the source on a plane, at the observer's eye, normal to the direction of the source.

Note 2 to entry: The point brilliance is expressed in lux (lx = lm·m−2).

Note 3 to entry: This entry was numbered 845-01-59 in IEC 60050-845:1987.

Note 4 to entry: This entry was numbered 17-962 in CIE S 017:2011.

Publication date: 2020-12