Luminaires using waveguide bodies and optical elements
AssigneeCree, Inc.
InventorsBernd P. Keller, Eric J. Tarsa, Zongjie Yuan
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Abstract
According to one aspect, a luminaire includes a waveguide body having an interior coupling cavity extending into a portion of the waveguide body remote from an edge thereof. The luminaire further includes an LED element extending into the interior coupling cavity having first and second sets of LEDs wherein each LED of the first set comprises a blue-shifted yellow LED and each LED of the second set comprises a red LED wherein the red LEDs are disposed between the blue-shifted yellow LEDs and wherein the blue-shifted yellow LEDs have a first height and the red LEDs have a second height less than the first height. The LED element further includes a lens disposed over the first and second sets of LEDs.
Claims41
A luminaire, comprising:
- a waveguide body having an interior coupling cavity extending into a portion of the waveguide body remote from an edge thereof;
- and
- an LED element extending into the interior coupling cavity including first and second sets of LEDs wherein each LED of the first set comprises a blue-shifted yellow LED and each LED of the second set comprises a red LED wherein the red LEDs are disposed between the blue-shifted yellow LEDs and wherein the blue-shifted yellow LEDs have a first height and the red LEDs have a second height less than the first height, the LED element further including a lens disposed over the first and second sets of LEDs.
A luminaire, comprising:
- a waveguide body having a coupling cavity;
- a plug member having a first portion disposed in the coupling cavity and having an outer surface substantially conforming to the coupling cavity and a second portion extending from the first portion into the coupling cavity and having a reflective surface adapted to direct light in the coupling cavity into the waveguide body;
- and
- an LED element disposed in the coupling cavity wherein the LED element has two different spectral emission characteristics.
A luminaire, comprising:
- a waveguide body including a first plurality of noncircular cylindrical coupling cavities, a second plurality of plug members each having a first portion disposed in an associated coupling cavity and having an outer surface substantially conforming to the associated coupling cavity and a second portion extending from the first portion into the associated coupling cavity and having a reflective surface adapted to direct light in the central coupling cavity into the waveguide body, and a third plurality of extraction features;
- and
- a fourth plurality of LED elements each disposed in an associated coupling cavity wherein each LED element includes at least one LED of a first spectral emission characteristic and at least one LED of a second different spectral emission characteristic.
Dependencies are inferred from the claim text.