Lighting panel and luminaire using it

Details Lighting panel and luminaire using it Lighting panel and luminaire using it

1975-03-14

1976-10-26

Peters, Jr., Joseph F.

Buckles, buttons, clasps, etc.

F21C 502

Patent

active

039886093

ABSTRACT:
Luminaires equipped with an improved high efficiency, wide light distribution lighting panel provide more favorable ESI values and may be spaced farther apart than conventional ones. The lighting panel includes three bands of conical prismatic elements; these bands are spaced on 5-inch centers from each other and are separated by substantially transparent bands having shallow 15.degree. flutes to soften the lamp images. Outside the bands of conical prisms are bands of lengthwise elevating prisms for increasing the spread of light to the sides of the fixture. Outside the elevating bands are bands of lengthwise depressing prisms. A single panel design provides similar excellent optical characteristics for either a two-lamp or three-lamp troffer.

REFERENCES:
patent: 2258354 (1941-10-01), Doane
patent: 2318716 (1943-05-01), Ralph
patent: 2368014 (1945-01-01), Franck
patent: 2474317 (1949-06-01), McPhail
patent: 2887568 (1959-05-01), Franck
patent: 3340393 (1967-09-01), Franck et al.
patent: 3483366 (1969-12-01), Wince
patent: 3721818 (1973-03-01), Stahlhut
patent: 3829680 (1974-08-01), Jones
Holophane Co., Inc., Information Sheet 7100-A.
K-S-H, Inc., Information sheets KSH-12.sup.TM Lens.

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