Luminaire utilizing waveguide

Patent metadata

Field	Value
Publication number	US-10310160-B2
Application number	US-201715652066-A
Country	US
Kind code	B2
Filing date	Jul 17, 2017
Priority date	Mar 15, 2013
Publication date	Jun 4, 2019
Grant date	Jun 4, 2019

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.

First claim

We 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.

2. 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.

3. 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.

4. 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.

5. 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.

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

7. 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.

Assignees

• Cree Inc

Inventors

• Wilcox Kurt S
• Medendorp Jr Nicholas W
• Yuan Zongjie
• Bendtsen Andrew Dan
• Snell Nathan
• Sorenson Jeremy
• Kinnune Brian
• Raleigh Craig D

Classifications

• G02B6/32

  having lens focusing means {positioned between opposed fibre ends (with lens being an integral part of the single fibre end G02B6/262)} · CPC title

• G02B6/0043

  provided on the surface of the light guide · CPC title

• G02B6/0091

  of the light source relative to the light guide (G02B6/0021 takes precedence) · CPC title

• G02B6/0021

  for housing at least a part of the light source, e.g. by forming holes or recesses · CPC title

• G02B6/24

  Coupling light guides · CPC title