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:
May. 19, 2026
Filed:
Feb. 17, 2022
3m Innovative Properties Company, St. Paul, MN (US);
Kevin T. Huseby, Oakdale, MN (US);
Stephen A. Johnson, Woodbury, MN (US);
Samuel A. Minno, St. Paul, MN (US);
Lin Zhao, Woodbury, MN (US);
William T. Fay, Woodbury, MN (US);
Robert L. Brott, Woodbury, MN (US);
Gilles J-B Benoit, Minneapolis, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
A multilayer optical film includes a plurality of optical repeat units. Each of the optical repeat units includes at least four sequentially arranged first through fourth layers including first and third layers having respective f-ratios fand f. The optical film has a first order reflection band having a reflection peak height Rpand any second order reflection band has a reflection peak height Rp, where Rp/Rp≥5. Rp/Rpmay remain at least 5 when changing at least one of the f-ratios fand fcontinuously by 0.2. A thickness of each of the second and fourth layers can be less than a thickness of each of the first and third layers by at least a factor of 2, or a thickness of a same one of the first and third layers can differ from a thickness of each other layer by at least a factor of 2.5.