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lamphouse

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lamphouse [′lamp‚hau̇s]
(engineering)
The light housing in a motion picture projector, located behind the projector head ordinarily consisting of a carbon arc lamp operating on direct current at about 60 volts, a concave reflector behind the arc which collects the light and concentrates it on the film, and cooling devices.
A box with a small hole containing an electric lamp and a concave mirror behind it, used as a concentrated source of light in a microscope, photographic enlarger, or other instrument.
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Light travels from the lamphouse via a collector lens into a cube holding the filters and a dichroic mirror Both these examples are professional or research grade equipment.
See the Invisible with a Fluorescent Microscope by Ellene Bauer / Reference and Education community
The lamphouse is then removed from the enlarger and, to prevent stray light entering, the open end is covered with a piece of card, preferably black.
Making Christmas photo greetings by Adamson, Keith I.P. / PSA Journal
The mine was small and nonunion; its lamphouse was a battered semitrailer with a coal stove in one end, two benches, a lamp-charging rack, and a row of hooks for clothes.
Notes from underground; some surprising lessons about productivity ... by Gray, Peter / Washington Monthly
 
 
 
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