OPTICAL DEVICE FOR FORMING TOUCH-SENSITIVE SURFACE Russian patent published in 2015 - IPC G06F3/42 

FIELD: physics, optics.

SUBSTANCE: invention relates to input devices. The device comprises a first lined radiation receiver and third and fourth emitters connected to a slave processor, as well as a second lined radiation receiver optically interfaced with the third and fourth emitters, and first and second emitters optically interfaced with the first lined radiation receiver, wherein the second lined radiation receiver and the first and second emitters are connected to the master processor.

EFFECT: high noise-immunity of the touch-sensitive surface.

3 cl, 10 dwg