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A Digital Projector is an electo-optical machine which converts image data from a computer or video source to a bright image which is then imaged on a distant wall or screen using a lens system.The projector serves the following purposes:
- Visualization of data stored in a computer for presentations
- Demonstration of program products for a large number of prospective customers
- The projector replaces the white board as well as written documents.
- Watching moving images from a video tape player or digital video disk player.
Digital projectors may also be built into cabinets which use a rear projection screen to form a single unified display device, now popular for "home theater" applications.
A typical resolution for a portable projector will be the SVGA-standard (800x600 pixels), with more expensive devices supporting XVGA (1024x768 pixels).
The cost of a device is not only determined by its resolution, but also by its brightness. For use in large conference rooms the brightness should be between 1,000 and 4,000 ANSI lumens.
Digital projection technologies:
Obsolete electronic projection technologies:
- Eidophor oil-film projectors
The current dominant technology at the high end for portable digital projectors is Texas Instruments' DLP technology, with LCD projectors dominating the low end. High intensity CRT devices are suitable only for fixed instalations.
1 Producers of projectors
- Acer
- ASK
- BenQ
- Barco
- Canon
- Dell
- Epson
- Hewlett-Packard
- Hitachi
- IBM
- InFocus
- LGLG (also known as Lucky Group , is a large South Korean chaebol (conglomerate), producing electronics, mobile phones, and petrochemical products. The name LG is an abbreviation of Lucky Goldstar the company's former name. Before changing their name, many
- NECNEC Corporation is a multi-national information technologies company headquarterd in Minato -ku, Tokyo, Japan. They are an internet solutions business involved in the manufacture and sales of computers, communications equipment, electron devices and softw
- Optoma
- Panasonic
- PhilipsCompany logo Koninklijke Philips Electronics N. Royal Philips Electronics), usually known as Philips is one of the largest consumer electronics producers in the world. In 2003, their sales were €29. 0 billion and they employed 164,000 people in more
- SonyUsage of these images is restricted. Trademarks on this page belong to their owner. See Image use policy Sony (in katakana: ) is a consumer electronics corporation based in Tokyo, Japan. It was founded on May 7, 1946 as the Tokyo Telecommunications Engine
- ViewSonicViewSonic is a manufacturer and provider of visual technology, specifically CRT monitors, LCD displays, projectors, plasma displays, HDTV technology, and mobile products, including tablet PCs and wireless monitors. They are known throughout the gaming and
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