17-708

luminaire efficiency (US)

ratio of the total luminous flux of the luminaire, measured under specified practical conditions with its own lamps) and equipment, to the sum of the individual luminous fluxes of the same lamp(s) when operated outside the luminaire with the same equipment, under specified conditions

Unit: 1

Equivalent term used outside US: "light output ratio"

See also NOTE to "optical light output ratio"

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