The optical touch device

The utility model discloses an optical touch device which comprises a base plate, at least one sensing assembly, at least one first reflection assembly and at least one second reflection assembly, wherein a touch area is formed on the base plate, and a chamfer is formed on the at least one corner of the base plate; the sensing assembly is arranged on the side surface of the chamfer of the base plate, and comprises a sensing assembly and a lighting assembly; the first reflection assembly is arranged at the periphery of the touch area for reflecting light rays emitted by the lighting assembly to the touch area; and the second reflection assembly is arranged above the sensing assembly for guiding the light rays reflected by the first reflection assembly to the sensing assembly. The optical touch device has a simple structure and is thin and compact.