| 摘要 |
PURPOSE: An optical camera module for optical touch screen is provided to prevent malfunction due to the disturbance light. CONSTITUTION: One or more lenses(110) is formed to make the angle of view in a direction vertical to a touch surface smaller than the angle of view in a direction horizontal to the touch surface. An optical path converter(120) reflects the light collected through the lens to the direction vertical to the touch surface. An image sensor(130) is arranged in the direction horizontal to the touch surface to receive the light reflected through the optical path converter in the rear of the lens. |
