Patent ID: 8218154
Filing Date: 2012-07-10
Classification: G02B,G06F

Abstract:
1. A system for determining a position of an element to at least one of scatter and reflect radiation, the system comprising: a radiation transmissive element having a first surface adapted to be engaged by the element and a second surface opposite to the first surface, a radiation provider adapted to provide radiation to or at the first surface in order for the element to be able to at least one of scatter and reflect radiation into the radiation transmissive element at the position on the first surface, one or more detectors for detecting at least one of scattered and reflected radiation, at the position at the first surface, into the radiation transmissive element and guided by the radiation transmissive element toward the one or more detectors and for outputting one or more corresponding signals, a touch controller configured to determine the position on the basis of the one or more corresponding signals from the one or more detectors, wherein