Optic assemblies and fixtures comprising the same
AssigneeCree, Inc.
InventorsJin Hong Lim, Kurt Wilcox, Boris Karpichev, Donald Walker
Life of this patent
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Abstract
In one aspect, optic assemblies and waveguide fixtures comprising the same are described herein. In an exemplary embodiment, an optic assembly includes an optic housing, an optical insert positioned in the optic housing, and a waveguide optic positioned in the optical insert. The waveguide optic includes a light extraction face and at least two sets of light extraction elements provided on the light extraction face. The at least two sets of light extraction elements are disposed on opposing sides of an axis of symmetry for extracting a symmetric lighting distribution.
Claims49
A lighting device comprising:
- an optic housing;
- an optical insert positioned in the optic housing;
- and
- a waveguide optic positioned in the optical insert, the waveguide optic comprising a light extraction face and at least two sets of light extraction elements disposed over the light extraction face.
A waveguide optic of an optic assembly, the waveguide optic comprising:
- a plurality of sidewalls;
- a light extraction face disposed between the plurality of sidewalls;
- and
- at least two sets of light extraction elements disposed over the light extraction face, wherein the at least two sets of light extraction elements are disposed on opposing sides of an axis of symmetry.
A waveguide optic of an optic assembly comprising:
- a front face comprising at least two sets of light extraction elements;
- a rear face opposite the front face;
- an entrance geometry defined between the front and rear faces;
- and
- a plurality of light emitting diodes (LEDs) facing the entrance geometry, wherein the LEDs emit light towards the entrance geometry in a first direction, and wherein the light extraction elements extract the light in a second direction that at least partially opposes the first direction.
A waveguide optic of an optic assembly comprising:
- a front face comprising a plurality of light extracting elements;
- a rear face comprising a plurality of light redirecting facets;
- an entrance geometry defined between the front and rear faces;
- and
- a plurality of light emitting diodes (LEDs) facing the entrance geometry and emitting light;
- wherein the entrance geometry is configured to separate the light into at least a first portion and a second portion, the first portion of light being directly extracted from the waveguide optic by one of the light extracting elements and the second portion of light being redirected by at least one of the light redirecting elements prior to extraction by one of the light extracting elements, and
- wherein the first or second portions of light are extracted at least partially backwards in a direction towards entrance geometry.
Dependencies are inferred from the claim text.