Patent ID: 8089039

Claim:
An opto-electronic arrangement to capture relative movements or relative positions of two objects, comprising at least one position-sensitive detector (PSD), wherein a given PSD of the at least one PSD is illuminated by at least two light emission devices, to define two different measuring cells having the given PSD in common, each of the two different measuring cells which are defined by the common PSD further comprise a slotted diaphragm which is arranged in a beam path of a corresponding light emission device, between the corresponding light emission device and the common PSD, one element of each of the at least two different measuring cells, comprising a light emission device, a slotted diaphragm and detector, is movable relative to the other two elements, and the common PSD is illuminated alternately by the light emission devices of the two different measuring cells, and a measurement value of the detector is read out simultaneously.