Head-mounted display

Head-mounted displays (HMD) with see-through function are key components for the use of augmented reality. Important components of an HMD are a micro display and HMD optics.

The Fraunhofer IOF has developed a free-form prism for use as HMD optics.


Optical parameters

  • Small and light optics
  • Low f-number
  • Large visual field of 32 x 24 degrees
  • VGA resolution
  • Distortion < 2 %



  • Optical design using raytracing
  • Rapid prototyping
  • FEM simulation
  • CAM system



  • Diamond turning and planing in PMMA on a Precitec FF700 ultra-precision free-form machine
  • Measurements using tactile measuring system