> > > >

1945 Theatre Catalog, 4th Edition, Page 501 (475)

1945 Theatre Catalog, 4th Edition
1945 Theatre Catalog
1945 Theatre Catalog, 4th Edition, Page 501
Page 501

1945 Theatre Catalog, 4th Edition, Page 501


DRIVE-IN THEATRE SCREEN ARRANGEMENT. For the maximum reflection of light to the parking area and for the minimum keystone effect, the screen of a drive-in theatre should be tipped from the top forward, so that it will be perpendicular to a line drawn from the center at the screen to a point located approximately two drive-in theatres have reported that they obtained especially good results using a flat-white concrete paint. Under no c011ditions should a glossy white paint be used, because of the shining and unreal appearance it will impart to characters' faces and other light-colored objects in the screen images. Silver and aluminum paints are not recommended because of the difficulty in applying this paint evenly over the entire area of the screen and because they discolor rapidly. These defects become very noticeable especially when the picture highlights are viewed, such as sky backgrounds.

For maximum reflection of light to the parking area, and for the minimum ukeystone effectf the screen should be tipped slightly so that it will be perpendicular to a line drawn from the center of the screen to a point located approximately two-thirds the length of the parking area from the screen tower.

Other Details

Individual loudspeakers are stored and distributed at the entrance and collected at the exit canopy. The new RCA speakers are left out in the open as they are weather-proof.

The lighting and traffic control may be handled by indirect lighting which illuminates the ground areas and may be controlled from a switchboard in the managers oflice.

The refreshment stand concessions are usually located in the projection building, thus providing a central location.

The approaches to the theatre, when well landscaped, add materially to its effectiveness and should be included in the architectural design.

It is apparent that in every detail of construction the drive-in theatre of tomorrow, even though planned on a modest scale, will reflect the dcgree of careful planning which has made the indoor theatre the amusement center of the cornmunity.


The projection room building is usually planned to include (I) the projection room proper; (2) a separate power room in which the motor-grincrator sets are mounted at a level above the ground to guard against damage from poor drainage; and (3) men's and ladies' restrooms, which are frequently located at opposite




ends of the building to insure greater privacy.

Plans should also include requirements for port-hole shutters and controls and two ventilation systems: one for the carbon-arc equipment. and the other for the general ventilation of the projection room proper and the power room.

Construction of Projection Building

There are many factors which govern the location, design, and construction of the building housing the projection booth.

In the design of drive-in theatres, the location of the projection room building is of prime importance in securing the finest possible screen image. The projection room is generally placed from 150 to 250 feet from the screen, but so located that the light beam to the screen cannot possibly be obscured.


thirds of the length of the parking area from the screen tower. In this drawing used through the courtesy of the Radio Corporation of America, are given some of the measurements. The precise measurements and dimensions, of course, can be determined only from the actual theatre, and the Figures are iust for illustration.

The minimum distance the booth may be located from the screen is determined by the maximum acceptable "keystone effect" and picture distortion. The maximum distance is determined by the longest focal length of fast projection lenses available, and by the projection angle required to clear the cars parked in the ramps directly in front of the projection booth.

The fastest projection lenses available at the present time have a speed of approximately f/2. With a 5-inch lens, the booth must be located 250 feet from the screen in order to obtain a picture 40 feet in with. Shorter focal-length lenses used in the above cases would provide a larger picture. With the booth a maximum of 250 feet from the screen, therefore, fast projection lenses may be used to obtain any size picture desired, within

THE SIZE OF THE SCREEN is particularly important in drive-in theatres, because of the great praiection and viewing distances involved. Here (courtesy of Drive-In Theatres, Inc.) are given suggested measurements for two standard drive-in theatre screens, for the 40x30-foot and the 52x39-foot sizes. All the screens provide for a 4-foot-wide border at the top and sides and a 3-foot.wide border under screen area, for usual proiection reasons.


1945 Theatre Catalog, 4th Edition, Page 501