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Bought a used projector on ebay, a screen at my local Amazon return warehouse, and a home theater sound system assembled from goodwill purchases and I have an outdoor movie theater setup in my ...
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 .
It was successful at first, but the line was discontinued in ten years. This line spawned the Model D viewer, View-Master's highest-quality viewer, which was available until the early 1970s, and the Stereomatic 500, View-Master's only 3D projector. [1] The other projectors were 2D and used only one of the images.
In contrast, a modern LCD or DLP projector often uses an Ultra-high-performance lamp which has a higher luminous efficacy and lasts for thousands of hours. [5] A drawback of that technology is the warm up time required for such lamps. Older overhead projectors used a tubular quartz bulb which was mounted above a bowl-shaped polished reflector.
The DP70 (DP stands for "Double Projector") was invented and developed by a team headed by Jan-Jacob Kotte of Philips between 1952 and 1954, as part of the Todd-AO system. A core objective of the project was to create a single machine that could project both the Todd-AO 5/70 format and the 4/35 format which was, and was likely to remain, the ...
Cinerama projectors used a device to slightly blur the join lines to make the jitter less noticeable. Future systems such as Circle-Vision 360° would correct for this by having masked areas between the screens. The jitters continued, but viewers were less aware of them with the adjoining pictures no longer so close together.
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