Granted Patent B2

US 12,632,147 · App. 18/346,263 · Granted May 19, 2026

Inventors: Stefan Johannes Holmgren (Sollentuna, SE); Sairam Iyer (San Jose, CA); Tom Richard Berglind (Vällingby, SE); Karl Erik Patrik Nordström (Huddinge, SE); Lars Bertil Sparf (Vällingby, SE); Per Carl Sture Rosengren (Täby, SE); Erik Anders Claes Rosengren (Stockholm, SE); John Elis Gösta Karlsson (Märsta, SE); Björn Thomas Eriksson (Tynningö, SE); Björn Alexander Jubner (Spånga, SE); Remo Behdasht (Lane Cove, AU); Simon Greger Fellin (Sigtuna, SE); Robin Kjell Åman (Spånga, SE); Joseph Shain (Stockholm, SE)

Assignee: Neonode, Inc.

G06F3/0421A63F9/24A63F13/21A63F13/213A63F13/26A63F13/31A63F13/355A63F13/92G01J1/0411G01J1/42G01S7/4811G01S7/4813G01S7/4815G01S17/04G01S17/48G01S17/88G06F1/169G06F3/017G06F3/021G06F3/0219G06F3/0304G06F3/03547G06F3/0428G06F3/0488G06F3/04883A63F2009/245A63F13/211A63F13/33A63F13/428G06F1/1616G06F2203/04809

Abstract

Claims (12)

1 . An optical method for identifying locations of objects in a plane, comprising:

serially projecting light beams, by a plurality of light emitters, along a detection area, from a plurality of locations along an edge of the detection area, wherein the light detectors and the light emitters are alternatingly arranged in an array, and whereby a reflective object inserted into the detection area reflects the projected light beams;

directing the reflections of the projected light beams arriving at the edge of the detection area onto a plurality of light detectors, in a manner that maximizes amounts of reflected light arriving at the detectors when the light arrives at a particular angle in relation to the edge; and

calculating two-dimensional coordinates of the inserted object in the detection area based on the particular angle and the outputs of the detectors.

2 . The optical method of claim 1 , wherein said calculating comprises interpolating outputs of the detectors.

3 . The optical method of claim 1 , wherein said directing is in a manner that maximizes amounts of reflected light arriving at the detectors when the light arrives at either one of two particular angles in relation to the edge, and said calculating two-dimensional coordinates is based on the two particular angles.

4 . The optical method of claim 3 , wherein said calculating comprises interpolating outputs of the detectors.

5 . An optical method for identifying locations of objects in a plane, comprising:

serially projecting light beams, by a plurality of light emitters, along a detection area, from a plurality of locations along an edge of the detection area, wherein the light detectors and the light emitters are alternatingly arranged in an array, and whereby a reflective object inserted into the detection area reflects the projected light beams;

directing the reflections of said projected light beams arriving at the edge of the detection area onto a plurality of light detectors, in a manner that maximizes amounts of reflected light arriving at the detectors when the reflective object is located at any one of a set of primary positions in the detection area, wherein those primary positions along the path of each projected light beam are associated with that light beam and with a respective one of the detectors; and

calculating two-dimensional coordinates of the object in the detection area based on those of the light beams causing detected reflections, the outputs of the detectors, and the corresponding associated primary positions.

6 . The optical method of claim 5 , wherein said calculating comprises averaging the corresponding associated primary positions weighted in accordance with respective outputs of the detectors.

Continuity (17)

References Cited (400)