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About LCD Projector
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 analog of the slide projector or overhead projector. To display images, LCD (liquid crystal display) projectors typically send light from a Metal halide lamp through a prism that separates light to three poly silicone panels – one each for the red, green, and blue components of the video signal. As polarized light passes through the panels (combination of polarizer, LCD panel and analyzer), individual pixels can be opened to allow light to pass or closed to block the light. The combination of open and closed pixels can produce a wide range of colors and shades in the projected image.
http://en.wikipedia.org/wiki/LCD_projector
About 3LCD
3LCD is the name and brand of a major LCD projection color image generation technology used in modern digital projectors. 3LCD technology was pioneered and refined by Japanese imaging company Epson in the 1980s and was first licensed for use in projectors in 1988. In January 1989, Epson launched its first 3LCD projector, the VPJ-700.
Although Epson still owns 3LCD technology, it is marketed by an affiliated organization simply named after the technology:"3LCD". The organization is a consortium of projector manufacturers that have licensed 3LCD technology to be used in their products.
http://en.wikipedia.org/wiki/LCD_projector
ViewSonic PJD5123
ViewSonic PJD5123 is a good, reliable and easy to use projector with affordable price. ViewSonic PJD5123 Review about Brilliant Color technology for brilliant, true color and high contrast images for presentations. ViewSonic PJD5123 has a slim design at only 3.2 inch height, making it ideal for moving from room to room on the campus or the office.
http://www.viewsonicpjd5123.com
Optoma HD20 Review
Optoma HD20 is one of the top projector that transforms any room into your very own cinema. Optoma HD20 Projectore will brings a new level of flexibility to your High Definition home theater. HD20 delivers excellent color saturation and subtle details for superior image quality.
http://www.optomahd20review.net
The powerful Optoma PK301 gives you the freedom to do business anywhere. Optoma PK301 is so compact and lightweight that you can slip it into your travel bag or even your pocket. Optoma PK301 combines aspect ratio and brightness demanded by presenters and movie lovers with a palm sized profile.
http://www.optomapk301review.org
Epson Home Cinema 8350 presents movies, sports and video games like you’ve never seen them. Epson Home Cinema 8350 is a high-definition home entertainment at a remarkable value. Epson 8350 offers a wide range of high-quality projectors to meet almost any need.
http://www.epson8350h.com