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Ultra-high performance (UHP) HID lamps are used in LCD or DLP projection TV sets or projection displays as well. HID lamps have made indoor gardening practical, particularly for plants that require high levels of direct sunlight in their natural habitat; HID lamps, specifically metal-halide and high-pressure sodium, are a common light source ...
Decades before the video revolution of the late 1970s/early 1980s, there was a small but devoted market for home films in the 16 mm, 9,5 mm, 8 mm, and Super 8 mm film market. Because most individuals in the United States owning projectors did not have one equipped with sound, vintage silent films were particularly well-suited for the market.
Ultra-high-performance lamp. An ultra-high-performance lamp, often known by the Philips trademark UHP, is a high-pressure mercury arc lamp. [1] These were originally known as ultra-high-pressure lamps, [2] [3] because the internal pressure can rise to as much as 200 atmospheres when the lamp reaches its operating temperature.
15 kW xenon short-arc lamp used in IMAX projectors High-speed, slow-motion video of a xenon flashtube recorded at a speed of 44,025 frames per second.. A xenon arc lamp is a highly specialized type of gas discharge lamp, an electric light that produces light by passing electricity through ionized xenon gas at high pressure.
Similar to fluorescent lights, HMIs present problems with color temperature when used for film or video lighting applications.Unlike incandescent-lighting units, which are blackbody radiators limited to a theoretical maximum of 3680 K (the melting point of tungsten), HMI lamps, like all gas discharge lighting, emit the emission spectral lines of its constituent elements, specifically chosen so ...
Although standard 8 mm was originally intended as a format for creating amateur films, condensed versions of popular cinema releases were available on the format up until the 1970s, for projection at home. These were generally edited to fit onto a 200 ft reel. Many Charlie Chaplin films, and other silent movies were available.
Projectors also appeared on the market which took advantage of the balance stripe next to the perforations by recording and replaying stereo sound. Projectors appeared in the late 1970s that featured the ability to play films with an optical soundtrack. The image-sound separation for the optical format was 22 frames.
As home video took its toll on the Super 8 scene, ELMO ceased production of their projectors, with the final models being the GS-1200 P Xenon and P Com in 1983. [6] Following this, the company began making CCD cameras in 1984, [ 1 ] introduced the EV-308 document camera in 1988, [ 7 ] and in the late 90s moved into educational technical equipment.