SENSOR SYSTEM AND OPTICAL TOUCH SENSOR

摘要

PROBLEM TO BE SOLVED: To provide an optical touch sensor for solving a problem that a structure is complicated and low in flexibility in a shape concerning conventional technology.

SOLUTION: Provided is an optical touch sensor including: an optical path 3 through which light propagates; a metal layer 1 disposed on the optical path 3; a flexible touch key 2 to contact with the metal layer 1 when bent; an incident light reflecting surface 4 to make the light that propagates through the optical path 3 incident on the metal layer 1 at an incident angle at which surface plasmon resonance is generated when the metal layer 1 and the touch key 2 are separated from each other; and a detector 5 to detect reflected light from the metal layer 1 and determine that the touch key 2 is pressed in the case that the intensity of the reflected light is increased.

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