Luminaire lens insert

Details Luminaire lens insert Luminaire lens insert

1975-12-29

1977-11-22

Braun, Fred L.

Illumination

Elongated source light unit or support

With or including transparent or translucent member

362330, F21V 504

Patent

active

040597555

ABSTRACT:
A luminaire lens is provided with a prism arrangement which emits light in two beams. A fluorescent tube fixture is utilized with the lens and approximately the same amount of light comes from the 0.degree. to 30.degree. zone of candlepower distribution and the 30.degree. to 60.degree. zone of candlepower distribution, with very little light emitted from the 60.degree. to 90.degree. zone of candlepower distribution. A second lens insert element is provided within the primary luminaire lens to mask the image of the fluorescent tube.

REFERENCES:
patent: 1472639 (1923-10-01), Dorey
patent: 2394992 (1946-02-01), Franck
patent: 2474317 (1949-06-01), McPhail
patent: 3009054 (1961-11-01), Thomas
patent: 3154254 (1964-10-01), McPhail et al.
patent: 3159352 (1964-12-01), Wakefield et al.
patent: 3234376 (1966-02-01), Ceglia
patent: 3291979 (1966-12-01), Logan
patent: 3647148 (1972-03-01), Wince
patent: 3725697 (1973-04-01), Wince

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