Exit-pupil expansion in Maxwellian-type holographic-based waveguide near-eye displays

Rajveer Kaur; Raj Kumar

doi:10.1117/12.3012738

7 June 2024 Exit-pupil expansion in Maxwellian-type holographic-based waveguide near-eye displays

Rajveer Kaur, Raj Kumar

Proceedings Volume 13041, Three-Dimensional Imaging, Visualization, and Display 2024; 1304108 (2024) https://doi.org/10.1117/12.3012738
Event: SPIE Defense + Commercial Sensing, 2024, National Harbor, Maryland, United States

Abstract

While offering promising applications in augmented reality (AR), the Maxwellian based AR display faces a critical limitation due to its constrained exit pupil size, posing discomfort to wearers and vulnerability to image loss upon minor misalignments. To address this issue, we propose a method utilizing Raman-Nath holographic grating for Maxwellian waveguide based display, aiming to expand the exit pupil effectively. It involves the development of two-dimensional gratings through the peristrophic multiplexing technique following the Raman-Nath regime. By spatially separating the outcoupled converging beam using multiplexed grating, an expansion of the exit pupil in horizontal as well as vertical directions is achieved. This enables the enlargement of the eye box into two dimensions, enhancing user comfort and mitigating the risk of image loss due to misalignments. Through experimental validation and optical simulation, the feasibility and effectiveness of our proposed method of Maxwellian waveguide displays for AR applications are demonstrated.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Rajveer Kaur and Raj Kumar "Exit-pupil expansion in Maxwellian-type holographic-based waveguide near-eye displays", Proc. SPIE 13041, Three-Dimensional Imaging, Visualization, and Display 2024, 1304108 (7 June 2024); https://doi.org/10.1117/12.3012738

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