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PLC-HF15000L Video Projectors

Sanyo Video Projectors

Backlight - Light that comes from the upstage, behind all actors and scenery. It helps to separate them from the back drop.

Light coming from upstage, behind scenery or actors, to sculpt and separat. Used . e them from the background. Used . ...

Prime Lens - A lens whose focal length is fixed. Prime lenses are not as versatile as zoom lenses, but are generally superior in optical quality. This is due to the simplisity of design with fewer moving parts th. Used . at can be optimized for one specific focal length. . Used . ...

Color - Color temperature is measured in kelvins, and gel colors are organized by several different systems maintained by the color manufacturing companies. The apparent color of a light is determined largel. Used . y by the gel color given it, but also in part by the power level the lamp is being run at and the color of material is it to light. As the percentage of full power a lamp is being run at drop. Used . s, the tungsten filament in the bulb glows orange instead of more nearly white. This is known as amber drift or amber shift. Thus a 1000-watt instrument at 50% will appear far more orange than a 500-watt instr

Fresnel Lens - A Fresnel lens is a type of lens invented by Augustin-Jean Fresnel. Originally developed for lighthouses, the design enables the construction of lenses of large size and short focal length without th. Used . e weight and volume of material which would be required in a lens of conventional design.

The Fresnel lens (often pronounced FREZ-nell but usually the original fre-NELL in theatr. Used . ical and motion picture lighting applications) reduces the amount of material required compared to a conventional spherical lens by breaking the lens into a set of concentric annular sections known as Fresnel

Zirconium Lamp - A high intensity point source arc lamp using a zirconium oxide cathode in an argon-filled bulb. Used in powerful projectors because of its low emanation of long-wavelength light and its concentrated . Used . source. Similar to the Drummond light or Limelight, but differing from them chiefly in the employment of cones of zirconium instead of cylinders of lime. It has been outdated and replaced b. Used . y electric lighting....

Video Projectors

Video projectors such as a digital video projector or an LCD projector are an alternative to regular video screens in that they project images directly onto a screen, rather than projecting the video from behind as a television or monitor does. Video projectors use a lens system and project an extremely bright beam of light onto a screen. Modern video projectors such as a 3 chip DLP projector have are extremely intricate and able to correct inconsistencies in the image such as blurriness and curvature. Video projectors are commonly used in concerts and theatres, and they have many other applications in educational and business settings. They can also be used as part of a home theater system. There are a vast range of different video projectors available. The old CRT projectors are surprisingly still quite widely used, as they are able to project a very large image size, although the bulkiness of the cabinet is not so popular. For professional use in theatres and concerts, the DLP projector is one of the preferred models. DLP video projectors use 1, 2 or 3 Digital Micromirror Devices, called DMDs, which are essentially microfabricated light valves. The 1 chip DLP projector and the 2 chip DLP projector have been known to experience a problem however – viewers can sometimes perceive a “rainbow” on the projection screen, and so the 3 chip DLP projector is more popular, as this is able to display each primary color in a simultaneous fashion, so the problem doesn’t occur. The LCD flat panel model is perhaps one of the most popular video projectors for home and business use, as it is both affordable and simple to use. Other video projectors include the LCoS projector, LED projectors, Laser Diode projectors and hybrid LED/Laser Diode projectors.