Illumination – Light source and modifier – Including reflector
Patent
1977-03-14
1979-04-24
Shoop, William M.
Illumination
Light source and modifier
Including reflector
362373, F21V 1304
Patent
active
041515846
ABSTRACT:
A light-collecting reflector for use with a source of light comprises a main reflector having a central parabolic reflecting surface and an outer ellipsoidal reflecting surface surrounding the central surface. The main reflector is adapted to have a source of light placed along its central axis. A secondary reflector having a reflecting surface facing the reflector surfaces of the main reflector and having an open central portion to allow light to pass therethrough, is positioned in front of the main reflector so that light striking the reflector surface of the secondary reflector is reflected back toward the reflecting surfaces of the main reflector. The reflecting surface of the secondary reflector is arcuate with radii that emanate from a circle which is concentric with the center axis of the main reflector.
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patent: 4027944 (1977-06-01), Gottlieb
Electro Controls Inc.
Shoop William M.
Wong Peter S.
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