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  2. Video projector - Wikipedia

    en.wikipedia.org/wiki/Video_projector

    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 ...

  3. LCD projector - Wikipedia

    en.wikipedia.org/wiki/LCD_projector

    The basic design of an LCD projector is frequently used by hobbyists who build their own DIY (do-it-yourself) projection systems. The basic technique is to combine a high color-rendering index (CRI) high-intensity discharge lamp (HID lamp) and ballast with a condenser and collector Fresnel lens , a single color LCD removed from a common ...

  4. Home cinema - Wikipedia

    en.wikipedia.org/wiki/Home_cinema

    A more expensive home cinema set-up might include a Blu-ray disc player, home theater PC (HTPC) computer or digital media receiver streaming devices with a 10-foot user interface, a high-definition video projector and projection screen with over 100-inch (8.3 ft; 2.5 m) diagonal screen size (or a large flatscreen HDTV), and a several-hundred ...

  5. Projector - Wikipedia

    en.wikipedia.org/wiki/Projector

    The most common type of projector used today is called a video projector. Video projectors are digital replacements for earlier types of projectors such as slide projectors and overhead projectors. These earlier types of projectors were mostly replaced with digital video projectors throughout the 1990s and early 2000s, [1] but old analog ...

  6. Projection screen - Wikipedia

    en.wikipedia.org/wiki/Projection_screen

    For most home cinema setups there are two aspect ratios. 16:9 and Cinemascope. [4] For classroom, businesses and houses of worship settings, 16:10 is the more commonly used projector screen aspect ratio because this matches the aspect ratio used by many modern computers. [5]

  7. Rear-projection television - Wikipedia

    en.wikipedia.org/wiki/Rear-projection_television

    The projector uses a bright beam of light and a lens system to project the image to a much larger size. A front-projection television uses a projector that is separate from the screen and the projector is placed in front of the screen. The setup of a rear-projection television is in some ways similar to that of a traditional television.