| 摘要 |
The present invention relates to a method and a device for detecting touch, e.g. by a finger touching a touch-surface of the device. In particular the invention relates to detection of touch by means of influencing, by means of the touch, propagation of light within the touch-sensitive device and detecting resulting change of light arriving to at least one detector device of the touch-sensitive device. Three paths for light intersect (or at least substantially intersect) at a primary zone of intersection. Thus, three coordinates for a touch at the touch-surface may be provided and a redundancy of coordinates may be provided for a touch.
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