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US09213443B2 Optical touch screen systems using reflected light 有权
光学触摸屏系统采用反射光

Optical touch screen systems using reflected light
Abstract:
A touch screen system, including a near-infrared transparent screen including a plurality of reflective elements embedded therein, a circuit board including circuitry for controlled selective activation of electronic components connected thereto, at least one light source connected to the circuit board, for emitting light, and at least one light detector connected to the circuit board, for detecting light emitted by the at least one light source and reflected by the reflective elements.
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