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THE PROJECTION ROOM
Lighting the Room
(41) Projection room illumination should be most carefully designed. Theatre projectionists are
in producing certain effects upon an illuminated screen located from ?0 to 150 i or more I feel away. They must have the best possible view of the screen, yet this view can be had only through a wall opening of necessarily restricted size.
(42) It is easily understood that if the wall immediately surrounding the port opening is illuminated, or if any light in the projection room shines in the eyes of the projectionist, his view of the screen is hamp< And it is a fact that even today both these bad characteristics exist in projection rooms that are otherwise quite intelligently arranged.
GLOSS WH/TE L IGHT WHEN PROJECT /A
METAL COVEFOR BRILLIANT L IGHT
CONDU/T
*
77KX/BLE LAMP SOCKET
PROJECTOR. LAMP HOUSE
Figure 142
(43) Enter any well illuminated projection room, take your place in working position beside a projector, watch the screen — then suddenly have the room illumination turned off. You will be amazed at the increased clearness with which the picture details on the screen can be discerned.
(44) Following is what we regard as a good plan for projection room illumination. Fig. 142 shows an end view of a sheet metal cove attached to the ceiling, its length extending to within six feet or less of each wall.
The cove should be located over the rear end of the projector lamphouses. Its interior, the ceiling from it to the rear wall and a sizable section of the rear wall