Standard Lamp
(Photometric) Standard Lamp
A lamp which has been calibrated to give a known value of luminous flux, colour temperature, or luminous intensity in a specified direction, under specified conditions of operation. Such lamps are used as standards in photometric measurements.
Note: Standard lamps include both Secondary Standards and Working Standards as well as the Primary Standard. For definitions of these, see C.I.E.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
