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:
Oct. 31, 2023
Filed:
Nov. 01, 2021
3m Innovative Properties Company, St. Paul, MN (US);
John A Wheatley, Stillwater, MN (US);
Gilles J. Benoit, Minneapolis, MN (US);
Guanglei Du, Pittsford, NY (US);
Rolf W. Biernath, Wyoming, MN (US);
Sara Suzanne Merritt, Grant, MN (US);
James Hillis, Bloomington, IN (US);
Owen M. Anderson, Minneapolis, MN (US);
Timothy J. Nevitt, Red Wing, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
A technique of determining the presence of a species in a sample may include passing light through an optical filter. In an example, the optical filter may include a spatially variant microreplicated layer optically coupled to a wavelength selective filter. The wavelength selective filter may have a light incidence angle-dependent optical band. The spatially variant microreplicated layer may be configured to transmit light to a first optical region of the wavelength selective filter at a first predetermined incidence angle and to a second optical region of the wavelength selective filter at a second predetermined incidence angle.