Object detector based on reflected light

US11733808B2 · kind B2 · utility

Assignee

• Neonode Inc. · SE

Inventors

• Stefan Holmgren · Sollentuna, SE
• Sairam Iyer · Sunnyvale, US
• Tom Richard Berglind · Stuvsta-Snättringe, SE
• Karl Erik Patrik Nordström · Huddinge, SE
• Lars Sparf · Ljungby, SE
• Per Rosengren · Solna, SE
• Erik Anders Claes Rosengren · Stockholm, SE
• John Karlsson · Brooklyn, US
• Björn Thomas Eriksson · Stockholm, SE
• Björn Alexander Jubner
• Remo Behdasht · Chatswood, AU
• Simon Fellin · Floda, SE
• Robin Kjell Åman · Spånga, SE
• Joseph Shain · Rehovot, IL

Key dates

• Filing date: Jul 26, 2021
• Grant date: Aug 22, 2023
• Expiry date: Jul 26, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F2203/04809
• WIPO field: Furniture, games
• WIPO sector: Other fields

Abstract

A sensor for a control panel, including a housing along an edge of the panel, light emitters projecting light along an in-air detection plane over the panel and detectors detecting reflections of the projected light, reflected by an object in the detection plane, lenses oriented such that each detector receives maximum light intensity when light enters a corresponding lens at a particular angle, whereby for each emitter-detector pair, when the object is located at a specific position in the detection plane, light emitted by the emitter of that pair is reflected by the object back through one of the lenses at the particular angle to the detector of that pair, the specific position being associated with that emitter-detector pair, and a processor configured to determine panel locations, map each location to a position in the detection plane associated with an emitter-detector pair, mapping the panel to the detection plane.