LCD projector
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An LCD projector is a device for giving presentations generated on a computer. They are the modern equivalent to the slide projector and overhead projector used in the past. LCD projectors place a small LCD panel, almost always color, in front of a bright lamp, with the imagery on the LCD being provided by an attached computer or other video source such as a VCR, DVD, or a cable box. With a lens that "projects" the image on any flat surface and does not require large "furniture" (like a big TV would), LCD projectors tend to be smaller and much more portable than older systems.
Early systems were often intended to be used with existing overhead projectors, built as a large "plate" that was put on the projector in place of the transparencies. This provided the market with a stop-gap solution in the era when the computer was not yet the universal display medium.
This technology is employed in some sizes of rear projection television consoles, as there are cost advantages when employed in mid size sets (40 to 50 inch diagonal). This is not expected to have much longevity in the "home theater" marketplace due to expected improvements cost/performance of competing technologies, particularly in direct-view LCD panels at the lower range of sizes and DLP projection in the larger sizes.
See also
External links
- LCD Projectors (http://www.theprojectorpros.com/learn.php?s=learn&p=technologies_lcd) Learn How LCD Technology Works in a Projector. (theprojectorpros.com)