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1954-55 Theatre Catalog, 12th Edition, Page 197 (161)

1954-55 Theatre Catalog, 12th Edition
1954-55 Theatre Catalog
1954-55 Theatre Catalog, 12th Edition, Page 197
Page 197

1954-55 Theatre Catalog, 12th Edition, Page 197

dimmer control, they may be dimmed to a suitable level during the picture to retain emphasis without annoying brightness.

Lighting of the interior of the concession building of the drive-in theatre is similar to the snack bar of the regular theatre, the same techniques as in stores. In addition to general illumination, Spotlighting can accent displays. Adjustable PAR lampholders may be built into the ceiling to provide flexibility for changing displays. Bullet type housings for reflector lamps may be suspended from the ceiling, and provide an attractive method of supporting R-40 spotlamps. By aiming the spotlights at high profit items-the merchandise that you want to sell-turnover can be improved and profit increased.


The theatre operator will find many uses for lamps other than projector and reflector lamps. Sign lamps, either clear or in colors, may be used for outdoor signs; under and on marquees, and for many interior applications. The color is a fired-on, glass-like material that will not scratch, chip, peel, or come off when exposed to the weather. Colors are bright and clear. They are designed for maximum appeal, both in combination and alone. For scintillating signs and running borders there are the 10 and 20watt flashing sign lamps, These lamps are gas-filled so that they go out quickly when the circuit is opened. The result is a clean-cut, sparkling effect.

The GA lamp-the lamp with the built-in shade-is a complete lighting device in itself and is ready for use in openvtype single or cluster ceiling fixtures, such as many of the fixtures in corridors, passage-ways, and restrooms that now use bare lamps. Designed for base-up burning, the lamp has an enameled bowl of a warm pleasing tint that directs approximately two-thirds of the light upward and one-third downward.

Also available for these areas as Well as for lounges, lobbies, and other areas of the theatre are circline fluorescent lamps. Available in three sizes, 8-inch, 12-inch and 16-inch diameter, the lamps can be used alone or in conjunction with incandescent and fluorescent lamps to form lighter decorative elements, or in a functional fixture as a convenient light source.

Air sanitation, along with refrigeration and heating, is an important function which must be performed by the theatres air-conditioning system. Germicidal lamps provide 2537 A ultraviolet, which is effective in destroying molds and bacteria. These lamps can make the recirculated air as pure as outside air, if installed to provide ultraviolet 'atts equal to the cubic feet per minute divided by three times the minor dimension of a duct. Four-watt ozone lamps, too, art useful. Their radiation reacting on the oxygen in the air forms ozone,


which has the ability to mask and destroy odors. They are particularly effective for lounges and public rooms. One ozone lamp should be used for each 1000 feet of space served. Both ozone and germicidal lamps must be used in fixtures which shield the lamp from direct view.

Colored Fluorescent Lamps

One of the most significant advances in fluorescent lighting in the last few years has been the introduction of deluxe colors. These are of particular interest to the theatre operator because they produce far better color appearance of room finishes, patronsl complexions, and decorations than earlier types of fluorescent lamps. Deluxe cool white lamps create almost exactly the same appearance as natural daylight and are particularly useful with open front designs. Deluxe warm white lamps provide effects similar to incandescent lamps and create a warm, inviting atmosphere.

The 40-watt rapid-start fluorescent lamp can now be dimmed over a 100 to 1 range in brightness. Its high light output per foot and easy replacement make it well suited for use in the auditorium as well as in other areas of the

theatre. They are available in the full line of colors. Colored fluorescent lamps are more efficient than colored incandess cent lamps. For example, a 40-watt blue fluorescent lamp provides 20 times as much blue light as 3. 40-watt incandescent lamp. Furthermore, fluorescent lamps donlt change color as noticeably as incandescent lamps when they are dimmed.

Black Light

For the theatre operator using black light, the new BLB fluorescent lamp provides a convenient black light source. The bulb of the BLB is a black light filter; therefore, this fluorescent lamp may be used in conventional fluorescent light equipment (coves, displays, etc.) with no need for a separate ultraviolet filter. Where a more concentrated source of ultraviolet radiation is needed, there are two PAR mercury lamps, a spot lamp (H100-SP-4) and a flood lamp (H100-FL4). These lamps require ultraviolet filters to eliminate visible light. If more black light is needed from a single source, it can be obtained from the more powerful H250-A5 mercury lamp. This lamp requires a filter and separate reflector.

CONTINUOUS ROWS OF colored fluorescent lamps along the ceiling and in vertical fixtures along the side walls may be supplemented by concealed lumps in coves to give gradual wall toning and color effects. Projector lumps in udiuslable sockets supply directional downlight to spotlight centerpiece.

1954-55 Theatre Catalog, 12th Edition, Page 197