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1947-48 Theatre Catalog, 6th Edition, Page 586 (568)

1947-48 Theatre Catalog, 6th Edition
1947-48 Theatre Catalog
1947-48 Theatre Catalog, 6th Edition, Page 586
Page 586

1947-48 Theatre Catalog, 6th Edition, Page 586

cates further uses, and uses suitable to motion-picture production.

One possible use is apparenteand one on which plenty of work probably has yet to be done before it can become of practical service. Since motion pictures, year one, a great problem has been the great amount of light required for filming and the heat produced by that light. Even on location, too, light is sometimes a factor, especially When work has to be postponed because of deficient sunlight.

In television are two developments that, with concerted work, could be brought to bear on this problem. In the nrst place, there is the Image Orthicon pick-up tube that is so sensitive that it will pick up a scene illuminated by a single candle. The second, which would be developed for specific use simultaneously with the Image Orthicon, is a camera recently developed by the Eastman Kodak Company for recording television programs from the face of the monitor tube.

The 16-mm. camera was developed in cooperation with National Broadcasting

Companys WNBT and the Allen B. Du- 7

Mont Laboratoriesy WABD to enable

such recorded programs to be reused by sponsors for institutional public relations and advertising, to record transmitted shows for billing purposes, and to record (for legal and other reasons) all live programs which are broadcast.

With the coincident development to new uses of these items, it might be possible to diminish the amount of light required for studio productions photographed in the usual way and to substitute Image Orthicon cameras Where more mobility with absolute silence is of paramount importance. On location, companies would be entirely freed from the vicissitudes induced by a recalcitrant sun.

Since Warners is handling the West Coast section of the projects, one may reasonably expect developments along these lines. For 20th Century in New York, the potentialities for newsreels are obvious. As the work progresses, development, undreamed of at present, can be expected.


While most of the large-screen television demonstrations were black-and THE HIGH-INTENSITY PROJECTION TUBE, shown in the center of the circular aperture, directs its brilliant image to the 30-inch mirror which is part at the optical system, and combines magnifying power with minimum light loss. In order to obtain the proper brilliance, an extremely high acceleration voltage is required, in this case, 50,000 volts. For the 18 x 24-foot picture 80,000 volts are needed.

white, it is not an illogical assumption that the Radio Corporation of America has in mind the theatre angles in .conjunction with its parallel studies on large-screen color television.

Indeed, in April, 1947, color television pictures on a 71/2-by-10-foot theatre screen were shown by RCA in a demonstration of its all-electronic color television system at the Franklin Institute in Philadelphia. This demonstration, and an earlier one at the companyls laboratories in Princeton, New Jersey, employed only color motion pictures and stills. The Atlantic City demonstration, while black-and-white, revealed the possibilities of large-screen presentation of live talent.

The April color demonstration, as reported by the Research Council of the Academy of Motion Picture Arts and Sciences, was considered sufficiently satisfactory for theatre demonstration, although not up to the quality of the average cinematic color.

According to Dr. V. K. Zworykin, tech nical consultant of the RCA Laboratories Division (and a company vicepresident), several years will yet be required for the development of color television to a state of perfection equal to that of the present blackeand-white television.

In the electronic simultaneous color process, three separate images in red, green, and blue are transmitted at the same instant over adjoining television channels of the same band-width used in standard television. Then, at the allelectronic receiver, which features a new type of receiver-projector, the three color signals are applied to kinescopes, or picture tubeseone with a red phosphor face, one blue, and the other green. The flickerless pictures formed on the face of each kinescope are projected by an optical system to the auditorium or theatre screen in perfect registration to form a single image blended in the same colors as the original.


Just as it is not given to anyone to know into just what sort of a person a baby will ultimately develop, so no one can tell today into what this infant equpiment will develop in the not far distant future.

Yet it takes no seventh son of a seventh son to hazard a fair guess, just on the strength of published statements, the obvious facts and developments that must have obtained before such statements could be made with official positiveness, and such technical and off-therecord thoughts and opinions as have been expressed in formal technical discussions at conventions and the more informal and extemporaneous discussions of problems of mutual interest.

When all this may come to be is quite another matter. But one is lead to believe that it, is not as far distant as some would have the world believe. It is not now a matter of technical research to determine principles and laws, and to develop working hypotheses: it is rather the engineers problem to take what science and research have brought into being and develop a line of equipment better adapted to serve the purpose in mind, and to bring to commercial perfece tion equipment for maximum service.

1947-48 Theatre Catalog, 6th Edition, Page 586