Method of determining whether a lens device is shifted and optical touch system thereof
A method of determining whether a lens device is shifted is applied to an optical touch system including a screen, a first light source and a first lens device respectively disposed corresponding to a first corner of a touch surface of the screen, and first and second optical strips respectively disposed at first and second sides of the touch surface. The method includes the first lens device setting a first brightness threshold according to a first original image captured by the first lens device toward the touch surface, disposing first and second reflection members at one end of the first optical strip and one end of the second optical strip respectively, and the first lens device determining whether a first optical axis of the first lens device is shifted according to the first brightness threshold and a first actual image captured by the first lens device.
Wistron Corporation
G G
G06F G06F
inventional inventional
Yu-Yen Chun-Chieh
Chen Li