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An electric lighting fixture, wall bracket, portable lamp, or other complete lighting unit designed to contain one or more electric lighting sources and associated reflectors, refractors, housing, and such support for those items as necessary.
A complete lighting unit, consisting of one or more lamps together with housing, the optical components to distribute the light from the lamps, and the electrical components’ ballast and starters, which are necessary to operate the lamps.
1. A complete lighting unit consisting of one or more lamps, together with components which are designed to distribute the light, to position and protect the lamps, and to connect the lamps to the electric power supply; also called a lighting fixture.
2. The above lighting unit without lamps in it.
3. A device that projects light on the stage of a theater.