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:
Sep. 15, 2020
Filed:
Mar. 12, 2018
3m Innovative Properties Company, St. Paul, MN (US);
Robert M. Emmons, St. Paul, MN (US);
David A. Rosen, Maplewood, MN (US);
Nicholas A. Johnson, Burnsville, MN (US);
Gary T. Boyd, Woodbury, MN (US);
Trevor W. Stolber, Stillwater, MN (US);
Owen M. Anderson, Minneapolis, MN (US);
Graham M. Clarke, Woodbury, MN (US);
Sherie A. Kristie, Hudson, WI (US);
Edward C. Roberts, Maplewood, MN (US);
Kristy A. Gillette, Spring Valley, WI (US);
3M Innovation Properties Company, St. Paul, MN (US);
Abstract
A lightguide having opposing first and second major surfaces where the first major surface includes a plurality of extended features and a plurality of discrete features is described. The lightguide has a viewable area having a length at least 100 times a thickness of the lightguide. The extended features extend in a first in-plane direction across at least 90 percent of the length L of the viewable area. The discrete features are spaced apart along the length and width of the viewable area. The discrete features may be disposed in spaces between the extended features. The discrete features may have faces extending between and connecting adjacent extended features.