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:
Mar. 28, 2017
Filed:
Feb. 25, 2013
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventor:
Thomas R. Hoffend, Jr., Woodbury, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21V 7/00 (2006.01); F21V 8/00 (2006.01); G02B 27/09 (2006.01); G02B 27/14 (2006.01); F21V 7/05 (2006.01);
U.S. Cl.
CPC ...
F21V 7/0033 (2013.01); F21V 7/05 (2013.01); G02B 6/0096 (2013.01); G02B 27/0994 (2013.01); G02B 27/143 (2013.01); G02B 6/0018 (2013.01);
Abstract
The present disclosure provides a novel construction for homogenizing light in a mirror-lined light duct, in particular such as in a light duct having an increase in the cross-sectional duct area in the light propagation direction. The present disclosure also provides for an apparatus for light homogenization after a portion of the light in a duct has been extracted from the duct and/or diverted to a side duct.