Eyebox centering using chromatic aberrations of virtual reality head-mounted displays

Ryan Beams; Andrea S. Kim; Aldo Badano

doi:10.1117/12.2543257

19 February 2020 Eyebox centering using chromatic aberrations of virtual reality head-mounted displays

Ryan Beams, Andrea S. Kim, Aldo Badano

Proceedings Volume 11310, Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR); 1131009 (2020) https://doi.org/10.1117/12.2543257
Event: SPIE AR VR MR, 2020, San Francisco, California, United States

Abstract

We demonstrate that transverse chromatic aberration (TCA) measurements can be used to determine the eyebox of a virtual reality head-mounted display using a digital test pattern, which consists of red, green, and blue bars placed horizontally and vertically at ±5°, ±10°, ±15° in the field of view. The pattern also features a white cross in the center of the field of view to determine the horizontal and vertical resolution. This provides simultaneous measurements of the TCAs and resolution for a given position of the camera in the eyebox. A map of the eyebox was generated by raster-scanning the position of the camera over the eyebox. The results for the Oculus Rift show that resolution has approximately a quadratic dependence on the position in the eyebox whereas the response to TCAs is linear. Therefore, TCA provides a more sensitive eyebox measurement at small displacements allowing for repeatable centering within 0.5 mm.

Citation Download Citation

Ryan Beams, Andrea S. Kim, and Aldo Badano "Eyebox centering using chromatic aberrations of virtual reality head-mounted displays", Proc. SPIE 11310, Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR), 1131009 (19 February 2020); https://doi.org/10.1117/12.2543257

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KEYWORDS

Head-mounted displays

Cameras

Virtual reality

Chromatic aberrations

Eye

Imaging systems

Image resolution

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