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. 05, 2022
Filed:
Feb. 10, 2017
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
Tri D. Pham, Woodbury, MN (US);
Qingbing Wang, Woodbury, MN (US);
Daniel J. Theis, Mahtomedi, MN (US);
Encai Hao, Woodbury, MN (US);
Keith R. Bruesewitz, River Falls, WI (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/02 (2006.01); B29D 11/00 (2006.01);
U.S. Cl.
CPC ...
G02B 5/0205 (2013.01); B29D 11/00788 (2013.01); G02B 5/0273 (2013.01);
Abstract
A unitary optical film stack comprising a light redirecting film assembly; a light diffusion film assembly; and an optical adhesive; wherein the light redirecting film assembly and the light diffusion film assembly are physically coupled non-continuously to minimize optical coupling.