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:
Nov. 26, 2024
Filed:
Sep. 18, 2020
3m Innovative Properties Company, St. Paul, MN (US);
Zhe Hu, Suzhou, CN;
Mingxing Wang, Shenzhen, CN;
Tuhua Chen, Dongguan, CN;
Zhiping Liu, Guangzhou, CN;
Yang Liu, Huizhou, CN;
Xiulong Men, Huizhou, CN;
Hailiang Hou, Suzhou, CN;
Huijie Xie, Beijing, CN;
Yifei Zheng, Dongcheng, CN;
Feng Zhao, Shanghai, CN;
Jingfei Chen, Shanghai, CN;
Bharat R. Acharya, Woodbury, MN (US);
Quinn D. Sanford, Mosinee, WI (US);
Matthew S. Cole, Woodbury, MN (US);
Tao Zhang, Shenzhen, CN;
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
An optical construction () includes a lightguide (), a transmissive reflector (), and an optical sensor (). The lightguide () includes a first major surface () and a second major surface () opposite to the first major surface (). The first major surface () includes a first portion () and an adjoining second portion (). The transmissive reflector () is disposed adjacent to the first major surface () of the lightguide (). The optical sensor () is disposed adjacent to the transmissive reflector () opposite to the lightguide (). The optical sensor () is aligned with the first portion () of the first major surface () of the lightguide (), such that the optical sensor () receives at least a portion of light passing through the first portion () of the first major surface () and transmitted by the transmissive reflector (). The optical construction () further includes an enclosed gap () disposed between the first portion () of the first major surface () of the lightguide () and the transmissive reflector ().