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Report of the Progress Committee 85
C. Miscellaneous
Screens. A new screen lias been announced for which better acoustic properties and projection qualities are claimed.^^^ A rear projection screen is available commercially which is made by coating a cloth with a liquid of known surface tension and applying a filler which refracts and disperses the light from the projector.^^Several patents^^^ have been taken out for various types of projection screens, including, among others, a screen coated contiguously with calcium tungstate, a method of application of transparent red, yellow and blue dyes or pigments to yield a neutral tint, screens composed of several layers of white net, the use of perforated oilcloth, etc.
Theatre Construction. The stage has contributed much to theatre design as certain factors are essential for adequate presentation of motion picture plays. ^^* This is even more true with the acceptance of sound pictures, for the acoustics of the auditorium are now equally as important as the decorative motif. A unique departure from the customary design of motion picture theatres is the new Film Arts Guild playhouse in New York.^^^ It has screens along the sides and ceiling with a white screen at the front, thus permitting the projection on the walls and ceiling of pictures in harmony with the action of the feature. A little theatre movement for the showing of artistic and unusual pictures is beginning in America, having been initiated according to Tazelaar^^^ at the Vieux Colombier, Paris, in 1924.
Mobile color designs are possible now in a Brooklyn theatre since the installation of a Clavilux color organ. ^^^
Schutz has presented suggestions on building a motion picture auditorium.^^^ The value of placing reproducing horns in various parts of the theatre as well as behind the screen is stressed by Rigaumont.^^^ Accounts of the factors which determine the acoustic properties of rooms have been published by Parsons^^^ and by Heyl.231
Plans of a proposed double theatre, each half seating 5,000 persons, have been reproduced.^^^ Rear projection on large screens would be possible from a central projection room located between the two auditoriums. Six projectors arranged in two tiers of three each would project segments of the picture on the large screen. Three patents related to projection loeation and design in theatres have been granted.^^^