nternational Electrotechnical Commission
hollow sphere whose internal surface is a diffuse reflector, as non-selective as possible
Note 1 to entry:·An integrating sphere is used to determine the total luminous flux (lumen output) of a lighting device.
Note 2 to entry:·An integrating sphere is used frequently with a radiometer or photometer.
IEC 62257-12-1, ed. 2.0 (2015-10)
, Geneva, Switzerland. All rights reserved