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Two modern electric lamps with lampshades. A lampshade is a fixture that envelops the light bulb on a lamp to redirect the light it emits. The shade is often affixed onto a light fixture to reduce the intensity of the light to observers, shield the light from a harsh environment, or for decoration by altering the color or creating shadows.
A top hat, also known as a stove pipe or snoot, is a device used in theatrical lighting to shield the audience's eyes from the direct source of the light. [1] It is shaped like a top hat with a hole in the top, and the brim being inserted into the gel frame holder on a lighting instrument.
Lamp harp with fluorescent bulb. A lamp harp is the component of a lamp to which the lamp shade is attached. It typically comes in two separate parts, a saddle which is fastened under the lamp socket, and the harp itself which consist of a lightweight frame attached to the saddle at its lower end and extending upwards to a point above the bulb.
This improves efficiency compared to the older side-inserted lamp or a double-ended lamp which requires two holes. One variation is the polarized two-pin socket – used primarily in projectors, which defines the exact positioning of the filament on one side. This improves the "point source" characteristic necessary for building complex optical ...
The insert at lower right shows the pattern this device projects. The spacing of the gobo and the lens can be varied to alter the size and focus of the image. A gobo is an object placed inside or in front of a light source to control the shape of the emitted light and its shadow.
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