The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 28, 2017
Filed:
Mar. 15, 2013
Cree, Inc., Durham, NC (US);
Zongjie Yuan, Grayslake, IL (US);
Kurt S. Wilcox, Libertyville, IL (US);
Eric J. Tarsa, Goleta, CA (US);
Fabian Jean-Daniel Rol, Goleta, CA (US);
James Ibbetson, Santa Barbara, CA (US);
Bernd P. Keller, Santa Barbara, CA (US);
Cree, Inc., Durham, NC (US);
Abstract
An optical waveguide includes a body of optically transmissive material having a width substantially greater than an overall thickness thereof and including a first side, a second side opposite the first side, a central bore extending between the first and second sides and adapted to receive a light emitting diode, and extraction features on the second side. A light diverter extends into the central bore for diverting light into and generally along the width of the body of material. The extraction features direct light out of the first side and wherein at least one extraction feature has an extraction surface dimension transverse to the thickness that is between about 5% and about 75% the overall thickness of the body of material.