Tactile Effect Waveguide Surface for Optical Touch Detection
First Claim
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1. An optical touch-sensitive device comprising:
- a planar optical waveguide structure, the waveguide structure having a top surface that includes tactile surface features;
emitters and detectors arranged along a periphery of the waveguide structure, the emitters producing optical beams that propagate through the waveguide structure via total internal reflection (TIR) to the detectors, wherein touches on the top surface of the waveguide structure disturb the optical beams, the touch-sensitive device determining touch events based on the disturbances.
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Abstract
An optical touch-sensitive device includes a planar optical waveguide structure having a top surface that includes tactile surface features. This produces a tactile effect experienced by the user using a finger or object (e.g., pen, stylus, or other instrument) on the surface.
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Citations
20 Claims
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1. An optical touch-sensitive device comprising:
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a planar optical waveguide structure, the waveguide structure having a top surface that includes tactile surface features; emitters and detectors arranged along a periphery of the waveguide structure, the emitters producing optical beams that propagate through the waveguide structure via total internal reflection (TIR) to the detectors, wherein touches on the top surface of the waveguide structure disturb the optical beams, the touch-sensitive device determining touch events based on the disturbances. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification