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:
Apr. 13, 2010
Filed:
Aug. 25, 2006
Craig R. Schardt, St. Paul, MN (US);
D. Scott Thompson, Woodbury, MN (US);
Kenneth A. Epstein, St. Paul, MN (US);
Brian W. Ostlie, Hudson, WI (US);
Richard F. Griffith, Minneapolis, MN (US);
Kenneth L. Smith, White Bear Lake, MN (US);
Craig R. Schardt, St. Paul, MN (US);
D. Scott Thompson, Woodbury, MN (US);
Kenneth A. Epstein, St. Paul, MN (US);
Brian W. Ostlie, Hudson, WI (US);
Richard F. Griffith, Minneapolis, MN (US);
Kenneth L. Smith, White Bear Lake, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Illumination assemblies and systems using same are disclosed. The illumination assembly can include a reflective substrate, and a light source unit including one or more light sources capable of producing illumination light. The assembly can further include a first light extraction surface including an azimuthal beam widening topography, where the first light extraction surface is positioned such that the light source unit is between the first light extraction surface and the reflective substrate. The first light extraction surface can face the light source unit.