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:
Jun. 20, 2017
Filed:
Mar. 12, 2015
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
Karl J. L. Geisler, St. Paul, MN (US);
David G. Freier, St. Paul, MN (US);
Thomas R. Corrigan, St. Paul, MN (US);
Assignee:
3M INNOVATIVE PROPERTIES COMPANY, Saint Paul, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21V 7/00 (2006.01); F21S 8/08 (2006.01); F21V 8/00 (2006.01); F21W 131/103 (2006.01); F21Y 115/10 (2016.01);
U.S. Cl.
CPC ...
F21V 7/0033 (2013.01); F21S 8/086 (2013.01); F21V 7/0008 (2013.01); G02B 6/0096 (2013.01); F21W 2131/103 (2013.01); F21Y 2115/10 (2016.08);
Abstract
A light duct elbow having two light conduits capable of transporting light along two different propagation directions. A light diverter is located between the light conduits and has a reflector for directing light along the light conduits. In the light duct elbow, a light ray propagating within a collimation angle in the first light conduit that intersects the reflector is diverted to a second light ray propagating within the collimation angle in the second light conduit.