Patent ID: 8466901

Claim:
An optical touch system, comprising: a panel apparatus comprising a first position and a second position different from the first position; and an optical touch apparatus, comprising: a light emitting module, set on the first position, for emitting a sensing light; a light path adjusting module, for reflecting the sensing light to form a reflected light; a light sensing module, set on the second position, for receiving the reflected light and generating a sensing result according to whether the light sensing module receives the reflected light; and a processing module, coupled to the light sensing module, for determining the touch point position formed on the panel apparatus according to the sensing result; wherein the light path adjusting module comprises a first light path adjusting unit and a second light path adjusting unit, the first light path adjusting unit and the second light path adjusting unit are set above a first side of a first surface of the panel apparatus and above a second side of the first surface respectively, wherein the light emitting module is a back-light source of the panel apparatus, the back-light source is disposed outside a second surface opposite to the first surface or outside a side surface different from the first surface and the second surface, wherein the light path adjusting module further comprises at least one auxiliary light path adjusting unit, the at least one auxiliary light path adjusting unit reflects an incident light emitted from the back-light source to form a first auxiliary reflected light emitted to the first light path adjusting unit, and wherein the at least one auxiliary light path adjusting unit is rotational, when the at least one auxiliary light path adjusting unit rotates to a first angle, the incident light emitted from the back light source emits to the panel apparatus to be the back-light source without being reflected by the at least one auxiliary light path adjusting unit, when the at least one auxiliary light path adjusting unit rotates to a second angle, the incident light emitted from the back light source is reflected by the at least one auxiliary light path adjusting unit to form the first auxiliary reflected light.