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HIGH-EFFICIENCY STEREOPTICON PROJECTOR FOR COLOR BACKGROUND SHOTS*
FARCIOT EDOUART**
Summary. — The use of hand-colored slides in connection with transparency process production has long been practiced, but at best such slides are far from satisfactory. A solution to their limitations was to project and rephotograph natural color. Paramount Studios has designed and developed a stereopticon which projects natural color slides, and which incorporates such modern devices as a special relayoptical system, heat-absorbing shutter, and the latest-type projection light source. These features and other details of the transparency stereopticon are described in the following paper.
Years prior to the advent of Motion Photography, when Edison invented his Kinetoscope, back in 1892, the old "Magic Lantern," with its oil lamp light source, was just the thing for an exciting evening's entertainment. And how well most of us can recall the various stages of development and advancement made through the more recent years, from the kind of lantern-slide pictures we enjoyed as kids, to the type of screen entertainment and artistry we now enjoy and demand.
In keeping with the color motion picture production demands of today, Paramount has designed what we believe to be a most modern and up-to-date type of "magic lantern" or stereopticon projection equipment, incorporating a specially designed relay-optical system, with synchronizing heat-absorbing shutter, and powered with the latest type Mole-Richardson projection light source (Fig. 1).
This stereopticon was developed to project natural color slides, in connection with the transparency process on color production, and constitutes a long step forward over the first stereopticon developed at Paramount along the middle part of 1932 for black-and-white transparencies.
The use of hand-colored slides in connection with transparency
* Presented Oct. 19, 1943, at the Technical Conference in Hollywood. ** Director of Transparency Div., Special Photographic Dept., Paramount Pictures, Inc., Hollywood.
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