# US 10,310,160 B2 · Luminaire utilizing waveguide

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- Number: US 10,310,160 B2
- Document ID: US10310160B2
- Status: Granted
- Kind: B2
- Application number: 15/652,066
- Filed: 2017-07-17
- Published: 2018-02-15
- Granted: 2019-06-04
- Earliest claimed: 2013-03-15
- Assignees: Cree, Inc.
- Applicants: Cree, Inc.
- Inventors: Kurt S. Wilcox; Nicholas W. Medendorp, Jr.; Zongjie Yuan; Andrew Dan Bendtsen; Nathan Snell; Jeremy Sorenson; Brian Kinnune; Craig D. Raleigh
- Web page: https://patentgrep.com/patent/US10310160B2

## CPC

- G02B 6/0038: {Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide}
- F21V 23/009: {the casing being inside the housing of the lighting device}
- G02B 6/0021: {for housing at least a part of the light source, e.g. by forming holes or recesses}
- G02B 6/0031: {Reflecting element, sheet or layer}
- G02B 6/0035: {provided on the surface of the light guide or in the bulk of it}
- G02B 6/0043: {provided on the surface of the light guide}
- G02B 6/0073: {Light emitting diode [LED]}
- G02B 6/0075: {Arrangements of multiple light guides (G02B6/0028 takes precedence)}
- G02B 6/0085: {Means for removing heat created by the light source from the package}
- G02B 6/0091: {of the light source relative to the light guide (G02B6/0021 takes precedence)}
- G02B 6/24: Coupling light guides
- G02B 6/262: {Optical details of coupling light into, or out of, or between fibre ends, e.g. special fibre end shapes or associated optical elements}
- G02B 6/305: {and having an integrated mode-size expanding section, e.g. tapered waveguide}
- G02B 6/32: having lens focusing means {positioned between opposed fibre ends (with lens being an integral part of the single fibre end G02B6/262)}
- G02B 6/34: utilising prism or grating {(G02B6/293 takes precedence)}
- F21W 2131/10: Outdoor lighting
- F21Y 2115/10: Light-emitting diodes [LED]
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

## Abstract

An optical waveguide comprising orthogonal x- and y-dimensions and developing an illumination distribution pattern comprising orthogonal x- and y-extents, comprising at least one coupling feature for directing light into the waveguide, at least one light redirection feature for redirecting light in an x-y plane within the waveguide, and at least one light extraction feature for extracting light out of the waveguide in an illumination pattern comprising at least one of the x- and y-extents that is offset with respect to the x- and y-dimensions, respectively. Additionally, the optical waveguide comprises optical features on at least first, second, and third sides thereof.

## Claims

### Claim 1

An optical waveguide comprising orthogonal x- and y-dimensions and developing an illumination distribution pattern comprising orthogonal x- and y-extents, comprising:
at least one coupling cavity for directing light into the waveguide;
at least one light redirection feature disposed within the optical waveguide for redirecting light in an x-y plane within the waveguide; and
at least one light extraction feature for extracting light out of the waveguide in an illumination pattern;
wherein the illumination pattern comprises at least one of the x- and y-extents that is offset with respect to the x- and y-dimensions, respectively;
wherein the at least one light redirection feature, the at least one light extraction feature, and the least one coupling cavity are disposed on first, second, and third sides of the optical waveguide; and
wherein the third side is transverse to and between the first and second sides.

### Claim 2 (depends on 1)

The optical waveguide of claim 1, wherein the at least one light extraction feature comprises one or more extraction features on each of the first and second sides of the optical waveguide, and wherein the first side is opposite the second side.

### Claim 3 (depends on 2)

The optical waveguide of claim 2 wherein the one or more light extraction features on the first side of the optical waveguide extend perpendicular to the one or more extraction features on the second side of the optical waveguide.

### Claim 4 (depends on 1)

The optical waveguide of claim 1 wherein the at least one light redirection feature is a cavity on the first side of the optical waveguide.

### Claim 5 (depends on 1)

The optical waveguide of claim 1 wherein the at least one extraction feature comprises first and second extraction features disposed transverse to one another on the first side of the optical waveguide.

### Claim 6 (depends on 1)

The optical waveguide of claim 1 wherein the at least one light redirection feature is disposed on the at least one light extraction feature.

### Claim 7 (depends on 1)

The optical waveguide of claim 1 wherein a combination of the at least one light redirection feature and the at least one light extraction feature develop the illumination pattern comprising at least one of the x- and y- extents that is offset with respect to the x- and y-dimensions, respectively.