Solid state directional lamp including retroreflective, multi-element directional lamp optic
AssigneeCree, Inc.
InventorsPaul Pickard, Nicholas W. Medendorp, Jr.
Life of this patent
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Abstract
A solid state directional lamp is disclosed. The lamp comprises a reflector and a plurality of solid state light emitters directing light rays towards the reflector. For each solid state light emitter of the plurality of solid state light emitters, the reflector defines a segmented parabola and a mirrored wall associated with the light emitter. Each solid state light emitter is positioned in the lamp at a focal point of the segmented parabola associated with the solid state light emitter. For each solid state light, the mirrored wall associated with the solid state light emitter directs light rays from the solid state light emitter into the segmented parabola associated with the same solid state light emitter.
Claims31
A lamp comprising:
- a reflector;
- at least two solid state light emitters positioned to direct light rays towards the reflector;
- wherein the reflector defines a plurality of geometric curves and a plurality of mirrored portions, and wherein each solid state light emitter of the at least two solid state light emitters is associated with at least one geometric curve of the plurality of geometric curves and at least one mirrored portion of the plurality of mirrored portions;
- and
- wherein the plurality of mirrored portions of the reflector is configured to direct light rays from the at least two solid state light emitters into the plurality of geometric curves of the reflector.
A reflector for a lamp, the reflector defining a plurality of geometric curves and a plurality mirrored portions configured to receive light rays from at least two solid state light emitters of the lamp, wherein each mirrored portion is configured to direct light rays received from a solid state light emitter of the at least two solid state light emitters into a geometric curve of the plurality of geometric curves;
- and
- wherein the plurality of geometric curves are configured to direct light rays received from the plurality of mirrored portions or the at least two solid state light emitters out of the lamp.
A lamp comprising:
- a reflector defining four geometric curves and four mirrored portions;
- four solid state light emitters positioned to direct light rays towards the reflector;
- wherein each solid state light emitter of the four solid state light emitters is associated with a geometric curve of the four geometric curves and is associated with a mirrored portion of the four mirrored portions;
- wherein for each solid state light emitter, the mirrored portion associated with the solid state light emitter directs light from the solid state light emitter into the geometric curve associated with the same solid state light emitter.
Dependencies are inferred from the claim text.