Focusing-shaped reflector arrays for acoustic touchscreens

An acoustic touchscreen having a substrate capable of propagating acoustic waves, the substrate having a touch-sensitive area, and an array of acoustically reflective elements lying in or on the substrate are positioned to transmit or receive acoustic signals into or out of the touch-sensitive area,...

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1. Verfasser:	Kent, Joel Christopher
Format:	Patent
Sprache:	eng
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creator	Kent, Joel Christopher
description	An acoustic touchscreen having a substrate capable of propagating acoustic waves, the substrate having a touch-sensitive area, and an array of acoustically reflective elements lying in or on the substrate are positioned to transmit or receive acoustic signals into or out of the touch-sensitive area, the elements having a focusing shape that provides waveguide functionality, i.e., focusing the acoustic wave energy to a narrow area along a center line of the array axis, without requiring a further waveguide core structure.
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title	Focusing-shaped reflector arrays for acoustic touchscreens
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