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:
Feb. 17, 2026
Filed:
Sep. 09, 2021
3m Innovative Properties Company, St. Paul, MN (US);
Carl A. Stover, St. Paul, MN (US);
Kristopher J. Derks, Woodbury, MN (US);
Benjamin J. Forsythe, Stillwater, MN (US);
Stephen A. Johnson, Woodbury, MN (US);
Derek W. Patzman, Prior Lake, MN (US);
David T. Yust, Woodbury, MN (US);
Steven H. Kong, Woodbury, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
An integral multilayer optical film includes a plurality of interference layers; a structured layer disposed on the interference layers and including a plurality of particles dispersed in a binder; and a barrier layer disposed between the structured layer and the interference layers and co-extruded with the interference layers and the structured layer. The structured layer has a first major surface facing away from the interference layers and a second major surface facing the interference layers. The barrier layer causes the particles to impart a greater surface roughness to the first major surface than the second major surface so that when the optical film is illuminated with a light source, the optical film has a first average effective transmission Twhen the first major surface faces the light source and a second average effective transmission Twhen the first major surface faces away from the light source, where T-T≥5%.