Current Optics and Photonics

Optical Society of Korea (한국광학회)
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Design of a See-through Off-Axis Head-Mounted-Display Optical System with an Ellipsoidal Surface

  • Wang, Junhua (Shanghai Engineering Center of Ultra-precision Optical Manufacturing, Department of Optical Science and Engineering, Fudan University) ;
  • Zhou, Qing (Shanghai Engineering Center of Ultra-precision Optical Manufacturing, Department of Optical Science and Engineering, Fudan University) ;
  • Chen, Jie (Shanghai Engineering Center of Ultra-precision Optical Manufacturing, Department of Optical Science and Engineering, Fudan University) ;
  • Hou, Lexin (Shanghai Engineering Center of Ultra-precision Optical Manufacturing, Department of Optical Science and Engineering, Fudan University) ;
  • Xu, Min (Shanghai Engineering Center of Ultra-precision Optical Manufacturing, Department of Optical Science and Engineering, Fudan University)
  • Received : 2018.04.27
  • Accepted : 2018.05.21
  • Published : 2018.06.25
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Abstract

A new method to design a see-through off-axis head-mounted-display (OA-HMD) optical system with an ellipsoidal surface is proposed, in which a tilted ellipsoidal surface is used as the combiner, which yields the benefits of easier fabrication and testing compared to a freeform surface. Moreover, we realize a coaxial structure in the relay lens group, which is simple and has looser tolerance requirements, thus making assembly easier. The OA-HMD optical system we realize has a simple structure and consists of a combiner and 7 pieces of coaxial relay lenses. It has a $48^{\circ}{\times}36^{\circ}$ field of view (FOV) and 12-mm exit pupil diameter.

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References

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