Patent ID: 9122350
Filing Date: 2015-09-01
Classification: G06F

Abstract:
1. An optical touch apparatus, comprising: a first light source for emitting a first light beam; a light guide device disposed in a transmission path of the first light beam, the light guide device comprising a first surface, a second surface opposite to the first surface, and a side surface connecting the first surface and the second surface, the first light beam entering the light guide device through the side surface, wherein the first light beam traveling within the light guide device is reflected by an object close to or in contact with the first surface so as to be converted to a first image light beam emitting out from the second surface; a light reflecting device, which is disposed in a transmission path of the first image light beam to reflect the first image light beam; an image sensing module for receiving the first image light beam, which is disposed in a reflection transmission path of the first image light beam reflected by the light reflecting device; a second light source for emitting a second light beam, wherein when the optical touch apparatus moves on a working surface, the second light beam is reflected by the working surface to form a second image light beam which is received by the image sensing module; and a housing disposed in the transmission path or the reflection transmission path of the first image light beam and also in a transmission path of the second image light beam, the housing including an inner space and at least one opening, wherein the image sensing module is disposed in the inner space, and the image sensing module has a sensing surface facing the opening so as to receive the first image light beam and the second image light beam.