Phase space methods in HMD systems

James Babington

doi:10.1117/12.2269923

26 June 2017 Phase space methods in HMD systems

James Babington

Proceedings Volume 10335, Digital Optical Technologies 2017; 1033505 (2017) https://doi.org/10.1117/12.2269923
Event: SPIE Digital Optical Technologies, 2017, Munich, Germany

Abstract

We consider using phase space techniques and methods in analysing optical ray propagation in head mounted display systems. Two examples are considered that illustrate the concepts and methods. Firstly, a shark tooth freeform geometry, and secondly, a waveguide geometry that replicates a pupil in one dimension. Classical optics and imaging in particular provide a natural stage to employ phase space techniques, albeit as a constrained system. We consider how phase space provides a global picture of the physical ray trace data. As such, this gives a complete optical world history of all of the rays propagating through the system. Using this data one can look at, for example, how aberrations arise on a surface by surface basis. These can be extracted numerically from phase space diagrams in the example of a freeform imaging prism. For the waveguide geometry, phase space diagrams provide a way of illustrating how replicated pupils behave and what these imply for design considerations such as tolerances.

Citation Download Citation

James Babington "Phase space methods in HMD systems", Proc. SPIE 10335, Digital Optical Technologies 2017, 1033505 (26 June 2017); https://doi.org/10.1117/12.2269923

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