Patent ID: 8325154
Filing Date: 2012-12-04
Classification: G06F

Abstract:
1. An optical touch control apparatus, comprising: a light source projecting light; a light guide module having an optical information capturing position on a working surface, the light guide module guiding the light projected from the light source to the optical information capturing position, and generating optical information according to light input through or reflected from the optical information capturing position, wherein the optical information relates to movement of an input device; an image sensor module for sensing the optical information, and generating an electronic signal according to the optical information, wherein the image sensor module is located at a lateral side of the light guide module; and a lens module including a first lens interposed between the optical information capturing position and the light guide module, and a second lens interposed between and the light guide module and the image sensor module, wherein the lens module and the light guide module are integrated as one piece, and the lens module focuses light passing through the lens module; wherein the light guide module includes a bevel at a side opposing to the optical information capturing position, the bevel having a relative angle with respect to the working surface such that at least part of the light projected from the light source is transmitted through the bevel to reach the optical information capturing position and reflected from the optical information capturing position to reach the bevel, and at least part of the light reflected from the optical information capturing position to reach the bevel is reflected by the bevel to the image sensor module.