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:
May. 04, 2021
Filed:
Aug. 21, 2019
Beechrock Limited, Castletown, IM;
Owen Drumm, Dublin, IE;
Robert Copperwhite, Dublin, IE;
Beechrock Limited, Castletown, IM;
Abstract
An optical touch-sensitive device includes a touch-sensitive surface over which touch events are detectable. The device also includes surface features on the surface that reduce touch object friction relative to an absence of surface features. Emitter and detectors are arranged along a periphery of the touch-sensitive surface. The emitters can produce optical beams that travel across the touch-sensitive surface to the detectors. Touches on the touch-sensitive surface disturb the optical beams and the touch-sensitive device determines touch events based on the disturbed optical beams. The surface features may also be arranged to reduce glare by diffusing light. In some embodiments, an anti-reflective layer is on top of the touch-sensitive surface and the surface features.