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:
Apr. 04, 2023
Filed:
Nov. 06, 2018
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
Neeraj Sharma, Lake Elmo, MN (US);
Guanglei Du, Painted Post, NY (US);
John A. Wheatley, Stillwater, MN (US);
Matthew E. Sousa, Rosemount, MN (US);
Jeremy O. Swanson, Woodbury, MN (US);
Assignee:
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/28 (2006.01); G02B 5/20 (2006.01); G02B 5/26 (2006.01);
U.S. Cl.
CPC ...
G02B 5/208 (2013.01); G02B 5/26 (2013.01);
Abstract
Systems including one or both of a light emitter or a light receiver or a detectable object; and an optical filter adjacent one or both of the light emitter or the light receiver, wherein the optical filter includes at least one wavelength transmission selective layer an absorber component, wherein the wavelength transmission selective layer at least partially reduces the transmission of wavelengths from 701 nm to 849 nm incident thereon.