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:
Dec. 24, 2024
Filed:
Dec. 02, 2019
3m Innovative Properties Company, St. Paul, MN (US);
Daniel J. Schmidt, Woodbury, MN (US);
Caleb T. Nelson, Woodbury, MN (US);
Kevin W. Gotrik, Hudson, WI (US);
Raymond J. Kenney, Woodbury, MN (US);
Kenneth A. Epstein, St. Paul, MN (US);
Gary T. Boyd, Woodbury, MN (US);
Corey D. Balts, Eau Claire, WI (US);
Morgan A. Priolo, Woodbury, MN (US);
John A. Wheatley, Stillwater, MN (US);
Elisa M. Cross, Woodbury, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
A light control film is described comprising alternating transmissive regions and absorptive regions disposed between the light input surface and the light output surface. The absorptive regions have an aspect ratio of at least 30. In some embodiments, an absorptive layer or reflective layer is disposed between the alternating transmissive regions and absorptive regions and the light input surface and/or light output surface. In another embodiment, the alternating transmissive regions comprise an absorptive material. The light control film can exhibit low transmission of visible light and high transmission of near infrared light. Also described is a light detection system comprising such light control films and a microstructured film.