LED spotlight including elliptical and parabolic reflectors
First Claim
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1. A light assembly comprising:
- a housing having a longitudinal axis, the housing comprising only a single end configured to emit light;
a first layer of light emitting diodes (LEDs) located at a first position on the longitudinal axis within the housing;
a second layer of LEDs located at a second position on the longitudinal axis within the housing; and
a parabolic reflector located at a light emitting end of the housing,wherein each of the layers comprises a plurality of optical reflectors,wherein the longitudinal axis is approximately perpendicular to a plane of the light emitting end of the housing,wherein the first layer of LEDs comprises a plurality of elliptical reflectors, a board and a plurality of LEDs,wherein the LEDs are mounted to the board and the elliptical reflectors are positioned such that they receive light produced by the corresponding LED and reflect the received light onto the inner surface of the parabolic reflector.
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Abstract
One or more layers of LEDs shine light into an array of elliptical reflectors. Each elliptical reflector has an LED at one focal point and shares the second focal point with a larger parabolic reflector that collimates the light. A hole in the center of the parabolic reflector receives additional LEDs, with or without collimation optics.
45 Citations
16 Claims
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1. A light assembly comprising:
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a housing having a longitudinal axis, the housing comprising only a single end configured to emit light; a first layer of light emitting diodes (LEDs) located at a first position on the longitudinal axis within the housing; a second layer of LEDs located at a second position on the longitudinal axis within the housing; and a parabolic reflector located at a light emitting end of the housing, wherein each of the layers comprises a plurality of optical reflectors, wherein the longitudinal axis is approximately perpendicular to a plane of the light emitting end of the housing, wherein the first layer of LEDs comprises a plurality of elliptical reflectors, a board and a plurality of LEDs, wherein the LEDs are mounted to the board and the elliptical reflectors are positioned such that they receive light produced by the corresponding LED and reflect the received light onto the inner surface of the parabolic reflector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A light assembly comprising:
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a housing having a longitudinal axis; a first layer of light emitting diodes (LEDs) located at a first position on the longitudinal axis within the housing; and a second layer of LEDs located at a second position on the longitudinal axis within the housing, wherein each of the layers comprises a plurality of optical reflectors; a parabolic reflector located at a light emitting end of the housing, wherein the first layer of LEDs comprises; a plurality of elliptical reflectors; a board; and a plurality of LEDs, wherein the LEDs are mounted to the board and the elliptical reflectors are positioned such that they receive light produced by the corresponding LED and reflect the received light onto the inner surface of the parabolic reflector, wherein the second layer of LEDs comprises; a plurality of parabolic reflectors; a second board; and a second plurality of LEDs, wherein the second plurality of LEDs are mounted to the second board and the parabolic reflectors are positioned to reflect light produced by the second plurality of LEDs through the light producing end of the housing.
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11. A light producing method comprising:
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generating light from a first layer of light emitting diodes (LEDs) located at a first position on a longitudinal axis within a housing; generating light from a second layer of LEDs located at a second position on the longitudinal axis within the housing; elliptically reflecting light produced by at least one of the first or second plurality of LEDs; collimating light generated by at least one of the first or second layers of LED; wherein the collimated light leaves the housing at only a single end, wherein the longitudinal axis is approximately perpendicular to a plane of the single end of the housing, wherein the elliptically reflecting light is produced by a plurality of elliptical reflectors and the collimated light is produced by a parabolic reflector, wherein the elliptical reflectors and the parabolic reflector share a common focal point. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification