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:
Aug. 04, 2020
Filed:
Apr. 30, 2019
Applicant:
Rapt Ip Limited, Mriehel, MT;
Inventor:
Owen Drumm, Dublin, IE;
Assignee:
Rapt IP Limited, Mriehel, MT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/042 (2006.01); G02B 6/42 (2006.01); G02B 6/43 (2006.01);
U.S. Cl.
CPC ...
G06F 3/0421 (2013.01); G02B 6/42 (2013.01); G02B 6/4214 (2013.01); G02B 6/43 (2013.01); G06F 3/0428 (2013.01); G06F 2203/04109 (2013.01);
Abstract
An optical touch-sensitive device is able to determine the locations of multiple simultaneous touch events. The optical touch-sensitive device can include an optical waveguide, an emitter, and an emitter coupler. The emitter produces optical beams, and the emitter coupler is on a surface of the waveguide and is configured to direct at least some of the optical beams to propagate via total internal reflection (TIR) through the waveguide as coupled optical beams. Touches on the top surface of the waveguide disturb the coupled optical beams, and the touch-sensitive device determines touch events based on the disturbances.