{
  "abstract": "A system for determining an orientation of a device is provided that includes a diffraction grating arranged on a surface of the device. By impinging a collimated light beam onto the diffraction grating an m-th order light beam and an n-th order light beam are generated. By monitoring the positions on sensor surface at which these light beams are detected, orientation information concerning an orientation of the device can be determined.",
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  "title": "System for determining an orientation of a device",
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