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:
Apr. 01, 2020
3m Innovative Properties Company, St. Paul, MN (US);
John A. Wheatley, Stillwater, MN (US);
Mark A. Roehrig, Stillwater, MN (US);
Del R. Lawson, Cottage Grove, MN (US);
Tony J. Kaufman, Rosemount, MN (US);
James W. Howard, North Oaks, MN (US);
Kevin W. Gotrik, Hudson, WI (US);
Claire R. Donoghue, Reading, GB;
Joshua M. Fishman, Minneapolis, MN (US);
Jonah Shaver, St. Paul, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
An optical system is disclosed and includes an optical sensor, a plurality of photosensitive pixels disposed on the optical sensor, a wavelength-selective optical filter in optical communication with the photosensitive pixels, the wavelength-selective optical filter being disposed remotely from the optical sensor, an area disposed in the wavelength-selective optical filter, the area having a transmission spectrum different from a transmission spectrum of a portion of the wavelength-selective optical filter not in the area and a reflector, the wavelength-selective optical filter and a measurement subject each being disposed between the reflector and the optical sensor along an optical path.