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:
Jan. 31, 2023
Filed:
Mar. 05, 2019
Applicant:
Flatfrog Laboratories Ab, Lund, SE;
Inventors:
Håkan Bergström, Torna-Hällestad, SE;
Thomas Craven-Bartle, Sodra Sandby, SE;
Tomas Svensson, Limhamn, SE;
Assignee:
FlatFrog Laboratories AB, Lund, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/042 (2006.01); G02B 5/02 (2006.01); G02B 6/42 (2006.01);
U.S. Cl.
CPC ...
G06F 3/0421 (2013.01); G02B 5/021 (2013.01); G02B 5/0236 (2013.01); G02B 5/0278 (2013.01); G02B 5/0284 (2013.01); G02B 6/4206 (2013.01);
Abstract
A touch sensing apparatus is disclosed comprising a panel that defines a touch surface, a plurality of emitters and detectors arranged along a perimeter of the light transmissive panel, and a light directing arrangement arranged adjacent the perimeter. The emitters are arranged to emit a respective beam of emitted light and the light directing arrangement is arranged to direct the light along a light path from the emitters to the touch surface. A diffusive light scattering element is arranged in the light path.