Illumination – Light source and modifier – Adjustable or repositionable modifier
Patent
1983-11-17
1985-08-27
Walsh, Donald P.
Illumination
Light source and modifier
Adjustable or repositionable modifier
362 18, 362285, 362296, 362323, 362341, 362401, F21V 700
Patent
active
045382158
ABSTRACT:
A lighting assembly especially adapted for promoting growth of plants in a greenhouse environment and the like, having a reflector cone with a light reflecting surface at a single cone angle of from about 76.degree. to about 64.degree. and preferably at an angle of about 68.degree. with respect to the center axis of the cone, and having a high powered halide or like light in part extending substantially below the plane of the outer edge of the reflector cone when the assembly is supported in a depending manner.
REFERENCES:
patent: 2780720 (1957-02-01), Bertrams
patent: 3154253 (1964-10-01), Guth
patent: 3839632 (1974-10-01), Federico
patent: 4338655 (1982-07-01), Gulliksen
patent: 4418379 (1983-11-01), De Marsh
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