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That price was higher than 35mm only projectors, but still reasonably low if compared to competitors like Bauer U2. [9] The low price and reasonable quality was an important part of the success. Because the DP70 was built to commission for a customer in the United States, it is a very unusual example of a European-designed piece of industrial ...
Slide projector light generation and collimation system: from left to right, mirror / reflector, bulb, condenser lens 1, green-tinted heat-absorbing glass, condenser lens 2; a centrifugal fan, used to cool the bulb, is visible at the top of the picture. A projector has three main optical elements: [3]: 39–40
Motiograph projector, c. 1911. Motiograph (originally The Enterprise Optical Manufacturing Company) was a film equipment company established by Alvah C Roebuck in Chicago in 1896. The company manufactured theater projectors and speakers. [1] [2] [3] Their Optiograph 35 mm film projector was first introduced in 1898 and sold via catalogs ...
Cinerama is a widescreen process that originally projected images simultaneously from three synchronized 35mm projectors onto a huge, deeply curved screen, subtending 146-degrees of arc. [2] [3] The trademarked process was marketed by the Cinerama corporation. It was the first of several novel processes introduced during the 1950s when the ...
The Slide Cube Projector is a slide projector and system, manufactured and marketed by Bell & Howell, which was introduced in 1970 and marketed through the 1980s.The projector derived its name from its transparent cubical plastic slide storage magazine, approximately 5.5 cm (2.2 in) in each dimension (a bit larger than a standard 135 film slide mount), that held 36 to 44 slides, depending on ...
35 mm movie projector in operation Bill Hammack explains how a film projector works. A movie projector (or film projector) is an opto-mechanical device for displaying motion picture film by projecting it onto a screen. Most of the optical and mechanical elements, except for the illumination and sound devices, are present in movie cameras.