2D curved holographic waveguide combiner for augmented reality with pupil expansion

Tianyao Zhang; Craig Draper; Pierre Blanche; Yushi Kaneda

doi:10.1117/12.2648597

16 March 2023 2D curved holographic waveguide combiner for augmented reality with pupil expansion

Tianyao Zhang, Craig Draper, Pierre Blanche, Yushi Kaneda

Proceedings Volume 12449, Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR) IV; 124491Q (2023) https://doi.org/10.1117/12.2648597
Event: SPIE AR | VR | MR, 2023, San Francisco, California, United States

Conference Poster

Abstract

Currently, holographic waveguide combiner has been widely used for the augmented reality (AR) and head-up display (HUD) applications because it takes advantage of pupil expansion to increase the size of eye-box without interfering with system’s field of view (FOV). Nevertheless, most of the waveguide substrates are restricted to the flat surface. Indeed, flat geometry is able to avoid unwanted optical power exerting on the image when it propagates inside waveguide, however it lacks the aesthetic perception to the viewer and compatibility to the wearable Near-to-eye Display (NED) applications since none of the glasses or windshield is flat. Here, we propose a 2-D curved holographic waveguide that utilizes the holographic optical element with purposely added optical power to compensate the aberration introduced by the curved geometry. Pupil expansion is achieved by manipulating image have multiple interactions with out-couplers to increase the size of eye-box. Both raytracing model and physical demonstrator will be discussed.

Citation Download Citation

Tianyao Zhang, Craig Draper, Pierre Blanche, and Yushi Kaneda "2D curved holographic waveguide combiner for augmented reality with pupil expansion", Proc. SPIE 12449, Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR) IV, 124491Q (16 March 2023); https://doi.org/10.1117/12.2648597

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available