Patent ID: 8325156
Filing Date: 2012-12-04
Classification: G06F

Abstract:
1. An optical touch screen device comprising: a display panel comprising a display screen; an infrared light source module having a strip-shaped light output portion generally parallel with the display screen, the strip-shaped light output portion being arranged along an edge of the display screen, configured for outputting infrared light to illuminate the display screen; a plurality of elongated reflective plates arranged along the other edges of the display screen, the reflective plates being configured for reflecting the light from the light output portion to the display screen, thereby the light from the light output portion and the reflected light cooperatively forming an infrared light field; and an infrared image capture module being a single image capture device and a lens module positioned over and facing the light field, the light field being located between the display screen and the lens module, and the image capture device configured for sensing the light field and changes thereof caused by an object disposed in the light field and analyzing the relative location of the object on the display screen based on the changes of the light field.