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. 28, 2020
Filed:
Dec. 28, 2017
Fuji Electric Co., Ltd., Kawasaki-shi, Kanagawa, JP;
Makoto Nakamura, Yokkaichi, JP;
Shimoto Ichihara, Yokkaichi, JP;
Tomonori Maekawa, Yokkaichi, JP;
Yuki Wagatsuma, Tsu, JP;
Shinya Nakanishi, Mie-gun, JP;
Yoshito Shibata, Tsu, JP;
FUJI ELECTRIC CO., LTD., Kawasaki, JP;
Abstract
An optical touch panel includes: a pair of retroreflective plates that are arranged inside at least a left and right pair of frame portions facing each other in a rectangular frame; a plurality of detectors that are arranged at four corners of the rectangular frame, the detectors being configured to irradiate infrared rays to, at least, the retroreflective plates, and to generate detection images based on reflection light from the retroreflective plates; and an operation determining unit configured to detect a touch position based on the detection images generated by the detectors.