Patent · US Active

Light-based touch surface with curved borders

US9335867B2 · kind B2 · utility

9Cited by

14References

7Claims

0Family size

Assignee

Neonode Inc. · SE

Inventors

Stefan Holmgren · Sollentuna, SE
Lars Sparf · Ljungby, SE
John Karlsson · Brooklyn, US
Anders Jansson · Uppsala, SE
Thomas Eriksson · Stockholm, SE
Joseph Shain · Rehovot, IL
Niklas Kvist · Varedo, IT
Robert Pettersson · Åtvidaberg, SE

Key dates

Filing date	Feb 3, 2015
Grant date	May 10, 2016
Priority date	—
Expiry date	Feb 3, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG06F2203/04808
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A light guide for a light-based touch-sensitive surface, including first and second curved panels having substantially similar curvatures, wherein light undergoes a first refraction by the first curved panel as it enters the light guide, and undergoes a second refraction by the second curved panel as it exits the light guide, the second refraction being the inverse of the first refraction, and wherein one of the panels is curved in a horizontal plane parallel to the surface and forms a curved rim for the surface.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.