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The Revere Camera Company was founded in the early 1920s in Chicago, Illinois, as the Excel Auto Radiator Company by Ukrainian immigrant Samuel Briskin. [1] Built for Excel – and designed by Alfred S. Alschuler, [2] the manufacturing facility was located at 320 E. 21st St., Chicago, Illinois.
35mm filmstrip projectors; Overhead presentation projectors (all models) Stereo cameras and stereo slide projectors through its TDC subsidiary; Slide Cube Projector, circa 1970; In 1934, Bell & Howell introduced their first amateur 8mm movie projector, in 1935 the Filmo Straight Eight camera, and in 1936 the Double-Run Filmo 8.
The first 8 mm Filmo was offered in 1935 as a single run 8mm film camera, the Filmo 127-A called Straight Eight. However, Straight Eight did not appeal to the market as well as double-8, so the design was modified for double-8 as the 134-A in 1936.
After Kodak (USA) introduced Super-8 film, in 1965 EUMIG launched the movie camera "Viennette Super-8" and the projectors "Mark M Super-8" with threader and arrest projection and "Eumig Mark S Super-8" for Super-8 sound film. At the time, EUMIG was the only European manufacturer with a complete range of equipment for Super-8 film.
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.
With HMI bulbs, color temperature varies significantly with lamp age. A new bulb generally will output at a color temperature close to 15,000 K during its first few hours. As the bulb ages, the color temperature reaches its nominal value of around 5600 K or 6000 K. With age, the arc length becomes larger as more of the electrodes burn away.