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A lampshade is a fixture that covers the light bulb on a lamp to diffuse the light it emits. Conical, cylindrical and other forms on floor-, desk- or table top-mounted as well as suspended lamp models are the most common and are made in a wide range of materials.

Incandescent Lampshade

A lampshade is a fixture that covers the light bulb on a lamp to diffuse the light it emits. Conical,…

"An instrument for directing a powerful beam of electric light for the purpose of search, illumination, or signalling."—Finley, 1917

Searchlight

"An instrument for directing a powerful beam of electric light for the purpose of search, illumination,…