Illumination – Light source and modifier – Including reflector
Patent
1977-06-21
1979-03-06
Nelson, Peter A.
Illumination
Light source and modifier
Including reflector
362346, 362348, F21V 700
Patent
active
041434129
ABSTRACT:
Lighting fixture includes a concave reflector having a given focal region and an axis, and means at least partly disposed in the focal region for supplying a source of light thereat reflectible at maximal intensity by the concave reflector in direction of the axis thereof and reflectible at decreasing intensity in direction extending from the light source at an increasing angle .beta. relative to the direction of the axis, so that
REFERENCES:
patent: 1260387 (1918-03-01), Johanson
patent: 1618010 (1927-02-01), Hoss
patent: 2086388 (1937-07-01), Nechin
patent: 2556328 (1951-06-01), Hinds
patent: 2830175 (1958-04-01), Jahnsen
patent: 3700883 (1972-10-01), Donohue et al.
patent: 4028542 (1977-06-01), McReynolds, Jr.
Lerner Herbert L.
Nelson Peter A.
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