What are LCD Projectors?
LCD (liquid crystal display) projectors are as different from overhead and opaque projectors as a spaceship is different from a car. Where overhead and opaque projectors primarily use 19th century technology (electricity and light bulbs), LCD projectors use liquid crystal panels plus the latest computer and optical technology to project both still and moving images in vivid color. Many projectors also have built-in audio speakers, making them all-in-one audiovisual presentation units. in general, because LCD projectors are much more sophisticated than overhead projectors, their price points are usually higher. What Are DLP Projectors? Just when it seemed that LCD technology had advanced projectors as far as they could go, along came DLP (digital light processing) projectors. Where LCD projectors use liquid crystal panels to display images, DLP uses thousands of microscopically small mirrors, which not only move pixels closer together for higher contrast and greater clarity, but also pr
LCD projectors are systems that display or project information or video onto a surface. LCD stands for liquid crystal display, the technology used to project images. LCD projectors are the technological descendants of overhead and slide projectors, older systems which serve the same purpose. LCD projectors are most commonly used for displaying images in presentations or lectures, but are also used in home theater applications. Video signals are comprised of three colors: red, green, and blue. LCD projectors contain a separate glass panel for each. Each panel consists of two plates of glass with a layer of liquid crystal between them. When a charge is applied, the crystals open to allow light through or close to block it. This opening and closing of pixels is what forms the image. LCD projectors use dichroic mirrors to split the light from the input source into red, green, and blue components. Each then passes through the corresponding panel, where pixels form an image. The three colors
