LED-Based Luminaire
AssigneeCooper Technologies Company
InventorsLandon Brooks Gennetten, Anthony Ryan Gibbs, James Richard Christ
Life of this patent
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Abstract
A lighting system can comprise an array of domed light emitting diodes covering a surface area of a substrate and two optics for processing emitted light. The first optic can comprise an inner surface facing the array and an exterior surface facing away from the array. The second optic can comprise grooves extending away from the array. The inner surface of the first optic can form a cavity that is large relative to the array. For example, the cavity can have a volume exceeding the volume of a cube, where each side of the cube has the surface area of the array.
Claims20
A lighting fixture comprising:
- a housing comprising an opening configured to face an area to be illuminated;
- a first optic attached to the housing and comprising an interior surface defining a cavity and an exterior surface oriented to face the area to be illuminated;
- a two-dimensional array of light emitting diodes mounted adjacent or in the cavity and oriented to emit light into the cavity;
- and
- a second optic comprising:
- a first end circumscribing the first optic;
- a second end opposite the first end;
- and
- refractive grooves extending between the first end and the second end.
A lighting system, for providing illumination along an axis, comprising:
- a housing comprising an aperture through which the axis passes;
- a substrate mounted at a position adjacent to or in the aperture;
- an array of light emitting diodes mounted to the substrate and organized about the axis to emit light along the axis, the array of light emitting diodes comprising an array of domes;
- a first optic comprising:
- an interior surface forming a cavity;
- and
- an exterior surface opposite the interior surface, wherein the first optic is mounted adjacent the array of light emitting diodes with the axis passing through the first optic, wherein at least portions of the domes are disposed in the cavity;
- and
- a second optic comprising:
- a first end oriented towards the housing and comprising a first aperture;
- a second end comprising a second aperture;
- and
- a pattern of grooves extending between the first aperture and the second aperture, wherein the axis passes through the first aperture and the second aperture.
A lighting system comprising:
- a housing;
- a planar substrate disposed in the housing;
- an array of domed light emitting diodes attached to the planar substrate to cover an area of the planar substrate;
- an optic comprising an interior refractive surface oriented for receiving light from the array of domed light emitting diodes and an exterior refractive surface oriented for emitting the received light,
- wherein the interior refractive surface forms a cavity into which the array of domed light emitting diodes projects, and
- wherein the cavity has a volume that is greater than a cube having sides of surface area equal to the covered area of the planar substrate.
Dependencies are inferred from the claim text.