Movie Projector Lamp Cuts Heat

Movie Projector
Lamp Cuts Heat

(Special to The News)

NEW YORK—A new line of
movie projection lamps that re-
duce by 50 per cent the heat
from the light that passes
through the film will be intro-
duced here Monday by Sylvania
Electric Products Inc.

The lamps, a development of
Sylvania's Lighting Products Di-
vision, produce a cooler light
by using a built-in reflector that
beams the visible light in one
direction while diffusing the
heat producing infra-red rays in
the opposite direction.

To separate the infra-red rays
from the visible light, the new
Sylvania lamp uses a so-called
"sagged" glass reflector with a
dichroic coating, instead of the
conventional metal reflector
with a metallic coating. (Di-
chroism is the property of pre-
senting different colors in two
different directions by trans-
mitted light.)

To separate the infra-red rays
from the visible l'"ht, ^" now
Sylvania lamp u: ed
"sagged" glass rfciic<,itii wiui a

ilichroic coating, instead of th&
conventional metal reflector
a metallic coating. (Di-
m is the property of pre-
senting different colors in tv
different directions by trail;

mitted light.)