System and a Method of Determining a Position of a Scattering/Reflecting Element on the Surface of a Radiation Transmisssive Element

摘要

A system and a method of determining a position of a scattering/reflecting element on a surface of a radiation transmissive element adapted to transport scattered/reflected radiation toward one or more detectors. Radiation having different characteristics or properties is transmitted to different areas of the surface whereby the position of the touch may be determined from the radiation scattered/reflected.