Holographic curved waveguide combiner for AR/HUD with 2D pupil expansion

Pierre-Alexandre Blanche; Tianyao Zhang; Craig Draper

doi:10.1117/12.2632864

30 September 2022 Holographic curved waveguide combiner for AR/HUD with 2D pupil expansion

Pierre-Alexandre Blanche, Tianyao Zhang, Craig Draper

Proceedings Volume 12231, ODS 2022: Industrial Optical Devices and Systems; 1223108 (2022) https://doi.org/10.1117/12.2632864
Event: SPIE Optical Engineering + Applications, 2022, San Diego, California, United States

Abstract

Augmented Reality (AR) and Head-up Display (HUD) applications are nowadays taking advantage of the pupil replication that it is possible to achieve with waveguide combiner to increase the eye box without sacrificing the field of view. However, most of the waveguide combiners are limited with flat geometry to avoid unwanted optical power. Flat waveguide ensures that no aberration is imparted to the image when the light propagates inside the medium. Yet, the aesthetic appeal of a flat combiner is not ideal since neither wearing glasses nor vehicle’s windshield is flat. Here we propose a 1-D curved waveguide combiner that take the advantage of holographic optical elements (HOE) to minimize the aberration for 2-D pupil replication. Both ray tracing model and experimental demonstrator will be discussed.

Conference Presentation

Citation Download Citation

Pierre-Alexandre Blanche, Tianyao Zhang, and Craig Draper "Holographic curved waveguide combiner for AR/HUD with 2D pupil expansion", Proc. SPIE 12231, ODS 2022: Industrial Optical Devices and Systems, 1223108 (30 September 2022); https://doi.org/10.1117/12.2632864

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