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The document camera is also called a desktop presenter unit or opaque projector. Opaque projectors are still in use for tracing, called tracing projectors. A flat or solid original is projected on a larger sheet of paper onto a wall or easel, where the artist or craftsperson can trace the outline reliably. [4] [5]
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 virtual retinal display, or retinal ...
An overhead projector projecting onto a pull-down screen. Pull-down screens (also known as manual wall screens) are often used in spaces where a permanently installed screen would require too much space. These commonly use painted fabric that is rolled in the screen case when not used, making them less obtrusive when the screen is not in use.
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 ...
Handheld projectors involve miniaturized hardware, and software that can project digital images onto a nearby viewing surface. The system comprises five main parts: the battery, the electronics, the laser or LED light sources, the combiner optic, and in some cases, scanning micromirror devices. First, the electronics system turns the image into ...
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 .
The set comes with a drill, driver, battery charger, carrying case, and two batteries. Get 50% off this bestselling drill set from Dewalt during Black Friday. The set comes with a drill, driver ...
X24 Video projectors Traditional BattleKart / Seiko Epson [31] [32] 24 Harmon Corner: Paradise, Nevada United States: 2012 1,706 18,360 93 by 18 306 by 60 7,360 × 1,440 pixels 10.60 12 mm pixel Pitch SMD (Surface Mount Diode) Traditional Prismview [33] [34] 25 Taipei Arena Sky Screen: Taipei Taiwan: 2006 1,693.8 18,232 105 by 16 344 by 53
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