Illumination – Light modifier – Refractor
Patent
1987-12-01
1989-08-15
Lazarus, Ira S.
Illumination
Light modifier
Refractor
362337, 362340, F21V 502
Patent
active
048580910
ABSTRACT:
An improved luminaire having uplight control to provide uniform ceiling illumination and downward light control below horizontal to uniformly distribute downward light with the added feature of eliminating glare between the 60.degree.-90.degree. vertical.
REFERENCES:
patent: 1699100 (1929-01-01), Dorey
patent: 2133378 (1938-10-01), Culloman
patent: 3191022 (1965-06-01), Wince
patent: 3275825 (1966-09-01), Wilty
patent: 3679891 (1972-07-01), Quack
patent: 4384316 (1983-05-01), de Vos et al.
Lazarus Ira S.
Lister John D.
Manville Corporation
Neils Peggy
Quinn Cornelius P.
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