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A video projector (lens) with a throw ratio of 0.4 or less would be positioned relatively close to the screen, and would be considered a "short throw projector". [3] A video projector that must be positioned very far from the screen would need a "long throw lens" with a throw ratio like 7.5.
Projector/Laser light curtain – A dual infrared laser device is positioned in the top middle area of a flat surface. The laser beam sweeps across the surface creating an invisible curtain. The projector, usually an ultra short throw projector) has a built in camera with an infrared filter that scans the projected area.
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 .
JMGO, an up-and-coming Chinese brand, has significantly lowered the entry barrier for ultra-short-throw projectors, starting with the O1 and the Leica-branded O1 Pro. JMGO's O1 is a surprisingly ...
Not long ago, a 4K ultra-short-throw projector for $1,800 would have been remarkable. Now that 85-inch TVs can be had for under $2,000 and sometimes even under $1,500? Much less remarkable.
The Xgimi Aura ultra-short-throw 4K projector is a home theater in a box (and $260 off!) Rick Broida. November 24, 2022 at 8:57 AM. Dreaming of your own home theater? I get it: Big screen, 4K ...
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