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35 mm movie projector in operation Bill Hammack explains how a film projector works. A movie projector (or film projector) is an opto-mechanical device for displaying motion picture film by projecting it onto a screen. Most of the optical and mechanical elements, except for the illumination and sound devices, are present in movie cameras.
Overhead projector in operation during a classroom lesson. An overhead projector (often abbreviated to OHP), like a film or slide projector, uses light to project an enlarged image on a screen, allowing the view of a small document or picture to be shared with a large audience.
A projector or image projector is an optical device that projects an image (or moving images) onto a surface, commonly a projection screen. Most projectors create an image by shining a light through a small transparent lens , but some newer types of projectors can project the image directly, by using lasers .
A type of film distribution in which a film is shown in just a small fraction of the movie theaters available in a region or country, typically only in major metropolitan markets and often at small-scale independently owned theaters; in the U.S. and Canada, a limited release is defined as a film released in less than 600 theaters nationwide.
In order that these parts [of the film projector] may operate as described, it is essential that the loop of slack film be maintained at all times ready for the intermittingly-acting device and also that the slack-manipulating and the intermittingly-moving devices be positively driven by mechanism which will absolutely insure the presence of ...
Quite often these spools will be located some way from the projector and the film path may be over rollers along the ceiling of the projection room and surrounds. The lenses of the projector can be automatically rotated in front of the projector light aperture to accommodate the correct lens for a given format. The picture to the right shows a ...
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Projection screen in a movie theater Home theater projection screen displaying a high-definition television image. A projection screen is an installation consisting of a surface and a support structure used for displaying a projected image for the view of an audience.