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:
Sep. 17, 2021
3m Innovative Properties Company, St. Paul, MN (US);
Bryan V. Hunt, Nowthen, MN (US);
Ying Zhang, Woodbury, MN (US);
Ian Dailey, Maplewood, MN (US);
Nicholas L. Untiedt, Minneapolis, MN (US);
Neeraj Sharma, Lake Elmo, MN (US);
Nicole L. Wills, Eagan, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
Optical devices include a visible light source, a visible light detector, and a multi-layer film article in the pathway between the visible light source and the visible light detector. The multi-layer film article includes an optical film layer and an optically clear adhesive layer. The optically clear adhesive layer includes a polymeric adhesive matrix, and at least one infrared light absorbing material that absorbs light in the range of 680-1100 nanometers. The infrared light absorbing material is an organic dye.