Field-of-view expansion via diffractive image steering and prism array

Gregory Nero; Yexin Pei; Tianyao Zhang; Xianyue Deng; Chin-I Tang; Parker Lieu; Ted Lee; Maxim Lunin; Yuzuru Takashima

doi:10.1117/12.2649373

16 March 2023 Field-of-view expansion via diffractive image steering and prism array

Gregory Nero, Yexin Pei, Tianyao Zhang, Xianyue Deng, Chin-I Tang, Parker Lieu, Ted Lee, Maxim Lunin, Yuzuru Takashima

Proceedings Volume 12449, Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR) IV; 124491T (2023) https://doi.org/10.1117/12.2649373
Event: SPIE AR | VR | MR, 2023, San Francisco, California, United States

Conference Poster

Abstract

Enabling all-day-wearable augmented reality (AR) displays require compact engineering solutions that still satisfy requirements like wide field-of-view (FOV) and high resolution. By using a Digital Micromirror Device (DMD) and a pulsed laser in synchronization we are able to perform diffractive image steering which decouples the FOV of the projected image from the display size while not sacrificing image resolution. This approach reduces, by several factors, the lateral extent of the display panel while retaining image resolution. The diffractive-steering-enabled FOV expansion by the DMD, paired with a prism array placed at the exit pupil of the projection lens, maintains a small form factor by re-distributing a part of the volume from the projector engine to the image transfer optics. Together with diffractive image steering and the prism array we demonstrate a 5x increase in field-of-view. This approach decreases the requirement on the number of pixels to maintain high resolution across a wide FOV, which makes it suitable for eventually installing it in small form factor head mounted displays.

Citation Download Citation

Gregory Nero, Yexin Pei, Tianyao Zhang, Xianyue Deng, Chin-I Tang, Parker Lieu, Ted Lee, Maxim Lunin, and Yuzuru Takashima "Field-of-view expansion via diffractive image steering and prism array", Proc. SPIE 12449, Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR) IV, 124491T (16 March 2023); https://doi.org/10.1117/12.2649373

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