Patent ID: 8878819

Claim:
A portable optical touch system comprising: a first camera device disposed on a corner of a plane, the first camera device comprising: a first imaging module for capturing an image of an object on the plane; a first adjusting module connected to the first imaging module; a first measuring module connected to the first imaging module; and a rotary mechanism whereon the first imaging module is disposed; a second camera device movably connected to the first camera device and disposed on the other corner of the plane, the second camera device comprising: a second imaging module for capturing the image of the object with the first imaging module; a second adjusting module connected to the second imaging module for determining whether the first imaging module and the second imaging module are on the same plane with the first adjusting module; and a second measuring module connected to the second imaging module to measure a distance between the first imaging module and the second imaging module with the first measuring module; and a controlling unit electrically connected to the first camera device, the controlling unit being adapted to drive the rotary mechanism to adjust a rotary angle of the first imaging module relative to the second imaging module according to a result of the first adjusting module and the second adjusting module determining whether the first imaging module and the second imaging module are on the same plane, to measure the distance since the first imaging module and the second imaging module are on the same plane, and to analyze the distance calculated by the first measuring module and the second measuring module and the image of the object captured by the first imaging module and the second imaging module for calculating a coordinate value of the object on the plane.