Optical touch panel

摘要

An optical touch panel is provided which includes a plurality of light-emitting elements, reflectors for reflecting the emitted light, and a plurality of light-receiving elements for receiving the reflected light. The plurality of light-emitting elements and the plurality of light-receiving elements are arranged alternately along each of first and second adjacent sides of a rectangular position-detecting surface, and the reflectors are arranged along each of third and fourth adjacent sides of the position-detecting surface. A drive controller causes the plurality of light emitting elements to light in a predetermined order to thereby cause respective ones of the light-receiving elements arranged on opposite sides of each of the plurality of light-emitting elements to receive the light reflected by the reflectors. Hollow cylinders opposed to the respective light-receiving elements inhibit light other than the light reflected by the reflectors from being incident on the plurality of light-receiving elements.