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:
Jan. 13, 2026
Filed:
Apr. 26, 2021
3m Innovative Properties Company, St. Paul, MN (US);
Tri D. Pham, Woodbury, MN (US);
David A. Rosen, North Saint Paul, MN (US);
Qunyi Chen, Woodbury, MN (US);
Lisa A Denicola, St. Paul, MN (US);
Quinn D. Sanford, Mosinee, WI (US);
Matthew S. Cole, Woodbury, MN (US);
Bharat R. Acharya, Woodbury, MN (US);
Matthew E. Sousa, Rosemount, MN (US);
Robert D. Taylor, Stacy, MN (US);
Benjamin J. Forsythe, Stillwater, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
An optically diffusive film includes an optical substrate layer with opposing first and second major surfaces; and an optical layer disposed on the second major surface of the optical substrate layer and including a structured major surface having a plurality of spaced apart elongated structures elongated along a same first direction and arranged at a substantially uniform density, each elongated structure including a peak such that, in a plane of a cross-section of the elongated structure that is parallel to the first direction and comprises the peak, the elongated structure has a substantially flat top region; wherein for substantially normally incident light and a visible wavelength range and an infrared wavelength range, the optical substrate layer has an average total transmittance or reflectance of greater than about 60% in the visible wavelength range and an average specular transmittance of greater than about 60% in the infrared wavelength range.