Interchange and area lighting luminaire

Claim 2

A street lighting luminaire comprising a reflector, a prismatic refractor, a high wattage light source within said reflector, said light source and reflector being disposed so as to constitute means for emitting and reflecting light, respectively, at approximately the same first relatively low vertical angles in the aarea of the refractor, said refractor having a central aperture and including prisms along a lower portion of the inner surface thereof, said prisms having active surfaces disposed so as to constitute means for lifting light reflected by the reflector and light emitted directly from the source to approximately the same second relatively low vertical angles, the aperture of the refractor comprising means for passing light emitted directly from the light source and light reflected from the reflector and not incident upon the refractor, therethrough and vertical flutes on said refractor for relatively wide lateral diffusion of the light passing through the refractor.

Claim 3

The luminaire of claim 1, wherein said first relatively low vertical angles range between 45* - 50* and said second relatively low vertical angles range between 53* and 58*.

Claim 4

The luminaire of claim 1 wherein said reflector is a prismatic reflector, said reflector and refractor have opposing annular faces spun together, an aluminum cover covers said prismatic reflector, said reflector, refractor and cover being apertured along a vertical axis.

Claim 5

The luminaire of claim 1 constituting means for lighting interchange and other large areas and wherein said prisms along the inner surface are annular and further constitute means for refracting light incident thereon into a circular beam at approximately 53* vertical.

Claim 6

The luminaire of claim 3 constituting means for lighting interchange and other large areas and wherein said vertical flutes are arranged on a lower portion of the outside surface of said refractor for relatively wide lateral diffusion of the refracted light, and an upper portion of said refractor has annular prisms on the outer surface thereof and vertical flutes on an upper portion of the inside surface thereof for lateral diffusion of light incident thereon, said annular prisms on the outer surface comprising means for depressing reflected and direct light.

Claim 7

The luminaire of claim 2 constituting means for type II light distribution upon a street, highway and the like, wherein said refractor comprises a front, rear and two side portions, said two side portions including said prisms along the internal surface thereon and said vertical flutes are disposed on the outer surface thereof and also internally in the central areas of said side portions, said two side portions also including vertically oriented prism means superimposed on said prisms along the internal surface of said refractor for laterally, deviating light incident thereon toward a vertical plane passing through the light source and thE central areas of said side sections.

Claim 8

The luminaire of claim 6 wherein said vertically oriented prism means are convex along their active surfaces the curvature thereof decreasingly varying from the central areas of said side section toward the rear and front ends.

Claim 9

The luminaire of claim 6 wherein said vertically oriented prisms decreasingly vary in refractive power from the central areas of said side section toward the rear and front ends.

Claim 10

The luminaire of claim 6 wherein said front portion includes means on the external surface thereof for depressing light from said source.

Claim 11

The luminaire of claim 6 wherein said rear section includes means on the external surface thereof for reflecting light from said source and said reflector.

Claim 12

The luminaire of claim 8, the internal surface of said front section includes flutes apposing said light depressing means.

Claim 13

The luminaire of claim 10 constituting means for distributing reflected and direct light into a circular beam at approximately 53* vertical at a mounting height between 40 feet and 100 feet.

Claim 14

A luminaire for interchange and area lighting comprising a prismatic reflector, a prismatic refractor, said reflector and refractor having opposite annular faces spun together, an aluminum cover covering said prismatic reflector, said reflector, refractor and cover being apertured along a vertical axis, a high wattage light source within said reflector, said light source and reflector being disposed so as to constitute means for emitting and reflecting light, respectively, at approximately the same angles in the area of said refractor, said refractor including annular prisms along a lower portion of the inner surface thereof and having their active surfaces disposed so as to constitute means for lifting reflected and direct light striking the same at approximately the same angle, the aperture of said refractor comprising means for passing unchanged reflected and direct light, vertical flutes arranged on a lower portion of the outside surface of said refractor for relatively wide lateral diffusion of the refracted light, an upper portion of said refractor having annular prisms on the outer surface thereof and vertical flutes on the inside surface thereof, said annular prisms on the outer surface comprising means for depressing reflected and direct light and the vertical flutes on the inside surface thereof comprising means for laterally diffusing light incident thereon.

Claim 15

A luminaire for interchange and area lighting comprising a prismatic reflector, a prismatic refractor, said reflector and refractor having opposite annular faces spun together, an aluminum cover covering said prismatic reflector, said reflector, refractor and cover being apertured along a vertical axis, a high wattage light source within said reflector, said light source and reflector being disposed so as to constitute means for emitting and reflecting light, respectively, at approximately the same angles in the area of said refractor, said refractor including annular prisms along a lower portion of the inner surface thereof and having their active surfaces disposed so as to constitute means for lifting reflected and direct light striking the same at approximately the same angle, the aperture of said refractor comprising means for passing unchanged reflected and direct light, vertical flutes arranged on a lower portion of the outside surface of said refractor for relatively wide lateral diffusion of the refracted light, an upper portion of said refractor having annular prisms on the outer surface thereof and vertical flutes on the inside surface thereof, said annular prisms on the outer surface comprising means for depressing reflected and direct light and the vertical flutes on the inside surface thereof comprising means for laterally diffusing light incident thereon.

Claim 16

The luminaire of claim 13, constituting means for distributing reflected and direct light into a Type II distribution with the lateral beams at approximately 53* vertical at a mounting height between 40 feet and 100 feet.

Claim 17

A street luminaire comprising a prismatic reflector, a prismatic refractor having front, rear and opposed side portions, said reflector and refractor having opposing annular faces spun together, an aluminum cover covering said prismatic reflector, said reflector, refractor and cover being apertured along a vertical axis, a high wattage light source within said reflector, said light source and reflector being disposed so as to constitute means for emitting and reflecting light, respectively, at approximately the same angels in the area of said refractor, said refractor including annular prisms along the inner surface on opposed side portions thereof, each prism having an active surface, vertical prisms of varying refractive power, superimposed on the active surfaces of said annular prisms and including convex surfaces of varying curvature, said annular prisms having their active surfaces disposed so as to constitute means for lifting reflected and direct light striking the same at approximately the same angle, reflecting means and light depressing means on, respectively, the rear and front portions of said refractor, the aperture of said refractor comprising means for passing unchanged reflected and direct light, said front portion of said refractor having anNular prisms on the outer surface thereof, said annular prisms on the outer surface comprising means for depressing reflected and direct light.

Claim 18

A street luminaire comprising a prismatic reflector, a prismatic refractor having front, rear and opposed side portions, said reflector and refractor having opposing annular faces spun together, an aluminum cover covering said prismatic reflector, said reflector, refractor and cover being apertured along a vertical axis, a high wattage light source within said reflector, said light source and reflector being disposed so as to constitute means for emitting and reflecting light, respectively, at approximately the same angels in the area of said refractor, said refractor including annular prisms along the inner surface on opposed side portions thereof, each prism having an active surface, vertical prisms of varying refractive power, superimposed on the active surfaces of said annular prisms and including convex surfaces of varying curvature, said annular prisms having their active surfaces disposed so as to constitute means for lifting reflected and direct light striking the same at approximately the same angle, reflecting means and light depressing means on, respectively, the rear and front portions of said refractor, the aperture of said refractor comprising means for passing unchanged reflected and direct light, said front portion of said refractor having anNular prisms on the outer surface thereof, said annular prisms on the outer surface comprising means for depressing reflected and direct light.