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There's something magical about turning a wall into a movie screen. One minute it's just an empty slab of drywall; the next, a 100-inch theater showing the new Batman movie.
21st century mobile phones have the ability to store thousands of photos and can take photos of good quality. Projector phones allow sharing them with a larger audience than on the phone's small screen. [5] One study found that people preferred to view and share photos with projector phones, compared to using conventional mobile phones. [6]
A virtual retinal display, or retinal projector, is a projector that projects an image directly on the retina instead of using an external projection screen. The most common type of projector used today is called a video projector. Video projectors are digital replacements for earlier types of projectors such as slide projectors and overhead ...
Simulation of a spinning zoopraxiscope An early projector and seats from a movie theater. The main precursor to the movie projector was the magic lantern.In its most common setup it had a concave mirror behind a light source to help direct as much light as possible through a painted glass picture slide and a lens, out of the lantern onto a screen.
Even so, the best image quality is found using a blank white, grey, or black [citation needed] (which blocks reflected ambient light) surface, so dedicated projection screens are often used. Perceived color in a projected image is a factor of both projection surface and projector quality.
Projection screens may be permanently installed on a wall, as in a movie theater, mounted to or placed in a ceiling using a rollable projection surface that retracts into a casing (these can be motorized or manually operated), painted on a wall, [1] or portable with tripod or floor rising models as in a conference room or other non-dedicated ...
A video projector is an image projector that receives a video signal and projects the corresponding image onto a projection screen using a lens system. Video projectors use a very bright ultra-high-performance lamp (a special mercury arc lamp ), Xenon arc lamp , metal halide lamp , LED or solid state blue, RB, RGB or fiber-optic lasers to ...
iBall Andi4a Projector September 2013 India 640x480, 15 lumens Akyumen Hawk V1.0 Projector Phone October 2013 Global 480P HD, 20 Lumens Akyumen Falcon V1.0 Projector Tablet October 2013 Global 480P HD. 30 Lumens ZFT K999 January 2014 China Samsung Galaxy Beam 2: April 2014 China 800x480, 20 lumens VVE WE8 [10] [11] 2014 China 854x480, 45 lumens
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