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US 2026/0118993 A1Published application
Detection line broadening
AssigneeFlatFrog Laboratories AB
InventorsHåkan Bergström, Thomas Craven-Bartle, Tomas Svensson
Life of this patent
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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.
Claims15
-19. (canceled)
A touch sensing apparatus comprising:
- a panel that defines a touch surface, and
- a plurality of emitters and detectors arranged along a perimeter of the panel,
- wherein the emitters are arranged to emit a respective beam of emitted light, the emitted light has a light path to a light coupling element,
- wherein the light coupling element is arranged adjacent the perimeter to receive the emitted light through a first surface and couple out light travelling in the light coupling element through a second surface thereof to direct the emitted light across the touch surface,
- a diffusive light scattering element arranged in the light path between a respective emitter of the plurality of emitters and the light coupling element, and
- wherein the diffusive light scattering element is separate from the light coupling element.
3 more elements
Dependencies are inferred from the claim text.