LED lamp with LEDs having a longitudinally directed emission profile
First Claim
Patent Images
1. A lamp comprising:
- an optically transmissive enclosure and a base defining a longitudinal axis of the lamp extending from the base to a free end of the enclosure;
an LED assembly in the optically transmissive enclosure, the LED assembly comprising a plurality of LEDs operable to emit light when energized through an electrical path from the base, the LED assembly arranged such that the plurality of LEDs face perpendicularly to the longitudinal axis, the emission profile of at least selected ones of the plurality of LEDs being at least 130 degrees FWHM and where the light intensity of the plurality of LEDs includes areas of peak intensity that are emitted laterally from the plurality of LEDs where the plurality of LEDs are oriented such that the areas of peak intensity face the free end of the lamp.
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Abstract
A lamp has an optically transmissive enclosure and a base defining a longitudinal axis of the lamp that extends from the base to the free end of the enclosure. An LED assembly is positioned in the optically transmissive enclosure. The LED assembly includes LEDs operable to emit light when energized through an electrical path from the base. The LED assembly is arranged such that the plurality of LEDs face perpendicularly to the longitudinal axis of the lamp. The emission profile of the LEDs being at least 120 degrees FWHM.
92 Citations
26 Claims
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1. A lamp comprising:
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an optically transmissive enclosure and a base defining a longitudinal axis of the lamp extending from the base to a free end of the enclosure; an LED assembly in the optically transmissive enclosure, the LED assembly comprising a plurality of LEDs operable to emit light when energized through an electrical path from the base, the LED assembly arranged such that the plurality of LEDs face perpendicularly to the longitudinal axis, the emission profile of at least selected ones of the plurality of LEDs being at least 130 degrees FWHM and where the light intensity of the plurality of LEDs includes areas of peak intensity that are emitted laterally from the plurality of LEDs where the plurality of LEDs are oriented such that the areas of peak intensity face the free end of the lamp. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A lamp comprising:
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an optically transmissive enclosure and a base defining a longitudinal axis of the lamp extending from the base to a free end of the enclosure; an LED assembly in the optically transmissive enclosure, the LED assembly comprising a plurality of LEDs operable to emit light when energized through an electrical path from the base, the LED assembly arranged such that the plurality of LEDs face perpendicularly to the longitudinal axis, the emission profile of at least selected ones of the plurality of LEDs being non-Lambertian where the non-Lambertian profile creates at least one light peak that is emitted laterally from the selected ones of the plurality of LEDs and the at least one light peak is directed along the longitudinal axis of the lamp.
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25. A lamp comprising:
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an optically transmissive enclosure and a base defining a longitudinal axis of the lamp extending from the base to a free end of the enclosure; an LED assembly in the optically transmissive enclosure, the LED assembly comprising a plurality of LEDs operable to emit light when energized through an electrical path from the base, the LED assembly arranged such that the plurality of LEDs face perpendicularly to the longitudinal axis, the emission profile of at least selected ones of the plurality of LEDs being asymmetric where the emission profile creates at least one light peak that is emitted laterally from the plurality of LEDs and the selected ones of the plurality of LEDs are oriented such that the at least one light peak is directed along the longitudinal axis of the lamp and the emission profile directs more light along the longitudinal axis of the lamp.
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26. A method of making a lamp comprising:
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providing an optically transmissive enclosure and a base defining a longitudinal axis of the lamp extending from the base to a free end of the enclosure; positioning an LED assembly in the optically transmissive enclosure, the LED assembly comprising a plurality of LEDs, each of the plurality of LEDs having a base mounted to a substrate operable to emit light when energized through an electrical path from the base, arranging the LED assembly such that the plurality of LEDs are disposed with the base of the LEDs facing laterally perpendicularly to the longitudinal axis of the lamp, the emission profile of at least selected ones of the plurality of LEDs being at least 120 degrees FWHM and including areas of peak intensity that are emitted laterally from the plurality of LEDs; orienting the LEDs such that the areas of peak intensity face the free end of the lamp.
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Specification