Computing high quality phase-only holograms for holographic displays

Praneeth Chakravarthula; Yifan Peng; Joel Kollin; Felix Heide; Henry Fuchs

doi:10.1117/12.2547647

21 February 2020 Computing high quality phase-only holograms for holographic displays

Praneeth Chakravarthula, Yifan Peng, Joel Kollin, Felix Heide, Henry Fuchs

Proceedings Volume 11310, Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR); 1131006 (2020) https://doi.org/10.1117/12.2547647
Event: SPIE AR VR MR, 2020, San Francisco, California, United States

Abstract

Holography has demonstrated potential to achieve a wide field of view, focus supporting, optical see-through augmented reality display in an eyeglasses form factor. Although phase modulating spatial light modulators are becoming available, the phase-only hologram generation algorithms are still imprecise resulting in severe artifacts in the reconstructed imagery. Since the holographic phase retrieval problem is non-linear and non-convex and computationally expensive with the solutions being non-unique, the existing methods make several assumptions to make the phase-only hologram computation tractable. In this work, we deviate from any such approximations and solve the holographic phase retrieval problem as a quadratic problem using complex Wirtinger gradients and standard first-order optimization methods. Our approach results in high-quality phase hologram generation with at least an order of magnitude improvement over existing state-of-the-art approaches.

Citation Download Citation

Praneeth Chakravarthula, Yifan Peng, Joel Kollin, Felix Heide, and Henry Fuchs "Computing high quality phase-only holograms for holographic displays", Proc. SPIE 11310, Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR), 1131006 (21 February 2020); https://doi.org/10.1117/12.2547647

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