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Because a single lens inverts an image projected through it (as in the phenomenon which inverts the image of a camera obscura), slides were inserted upside down in the magic lantern, rendering the projected image correctly oriented. [1] It was mostly developed in the 17th century and commonly used for entertainment purposes.
InFocus Corporation is a privately owned American company based in the state of Oregon.Founded in 1986, the company develops, manufactures, and distributes DLP and LCD projectors and accessories as well as large-format touch displays, software, LED televisions, tablets and smartphones.
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 .
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A three-chip DLP projector uses a prism to split light from the lamp, and each primary color of light is then routed to its own DMD chip, then recombined and routed out through the lens. Three chip systems are found in higher-end home theater projectors, large venue projectors and DLP Cinema projection systems found in digital movie theaters.
The majority of 35 mm film systems, cameras, telecine equipment, optical printers, or projectors, are configured to accommodate the 4-perf system; each frame of 35 mm is 4 perforations long. 4-perf was (and remains) the traditional system, and the majority of projectors are based on 4-perf, because 4 perforations is the amount needed per frame vertically in order to have enough negative space ...
An LCD projector is a type of video projector for displaying video, images or computer data on a screen or other flat surface. It is a modern equivalent of the slide projector or overhead projector .
In movie theater projectors, the intermittent movement is often produced by a Geneva drive (Maltese cross mechanism). However, in a movie camera, it is done through a process by which a shutter opens exposing the film negative to light for a split second, then the shutter closes blocking light from reaching the negative.