Prismatic lighting panel
First Claim
Patent Images
1. A prismatic lighting panel for use in a lighting fixture, said panel being made of light-transmitting material and having a substantially planar upper face and a prismatic lower face, said lower face defining a plurality of intersecting recessed cones having apex angles of about 116°
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10°
, the apexes of said cones being spaced from each other such that the intersections of adjacent cones form sides of generally equilateral triangular cells, said sides being arranged along lattice lines extending at about 60°
to each other, the intersections of said lattice lines being the lowermost points of said lower face, said sides being from about 0.17 to about 0.25 inch long.
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Abstract
A light-weight plastic lighting panel having recessed conical prisms arranged in such a way that their intersecting edges form equilateral triangles, all of whose sides lie along lattice lines. The side of each triangle has a length of 0.475 cm. (three-sixteenths of an inch), and the panel may have a weight of less than 1600 grams per square meter (5.2 ounces/square foot).
23 Citations
10 Claims
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1. A prismatic lighting panel for use in a lighting fixture, said panel being made of light-transmitting material and having a substantially planar upper face and a prismatic lower face, said lower face defining a plurality of intersecting recessed cones having apex angles of about 116°
- ±
10°
, the apexes of said cones being spaced from each other such that the intersections of adjacent cones form sides of generally equilateral triangular cells, said sides being arranged along lattice lines extending at about 60°
to each other, the intersections of said lattice lines being the lowermost points of said lower face, said sides being from about 0.17 to about 0.25 inch long. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification