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:
Jul. 31, 2018
Filed:
May. 16, 2013
3m Innovative Properties Company, St. Paul, MN (US);
Raymond P. Johnston, Lake Elmo, MN (US);
Robert L. Brott, Woodbury, MN (US);
Patrick R. Fleming, Lake Elmo, MN (US);
Karl J. L. Geisler, Saint Paul, MN (US);
Kayla A. Hagens, Cottage Grove, MN (US);
Steven G. Lucht, Inver Grove Heights, MN (US);
Charles N. Devore, Hugo, MN (US);
Joseph W. Woody, V, Saint Paul, MN (US);
David Scott Thompson, West Lakeland, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
A lightguide functioning as a luminaire. The luminaire includes at least one solid state light source, such as an LED, and a lightguide configured to receive light from the solid state light source. Light from the light source is coupled into the lightguide and transported within it by total internal reflection until the light exits the lightguide. A shape of the lightguide causes and directs extraction of the light, and can also be used to create a particular pattern of the extracted light. Such shapes include linear wedges and twisted wedges. Optical films can be included on the light input and output surfaces of the lightguide.