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HoloBeam: Paper-Thin Near-Eye Displays

Akşit, K; Itoh, Y; (2023) HoloBeam: Paper-Thin Near-Eye Displays. In: Proceedings - 2023 IEEE Conference Virtual Reality and 3D User Interfaces, VR 2023. (pp. pp. 581-591). IEEE: Shanghai, China. Green open access

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An emerging alternative to conventional Augmented Reality (AR) glasses designs, Beaming displays promise slim AR glasses free from challenging design trade-offs, including battery-related limits or computational budget-related issues. These beaming displays remove active components such as batteries and electronics from AR glasses and move them to a projector that projects images to a user from a distance (1-2 meters), where users wear only passive optical eyepieces. However, earlier implementations of these displays delivered poor resolutions (7 cycles per degree) without any optical focus cues and were introduced with a bulky form-factor eyepiece ($\sim 50\ mm$ thick). This paper introduces a new milestone for beaming displays, which we call HoloBeam. In this new design, a custom holographic projector populates a micro-volume located at some distance (1-2 meters) with multiple planes of images. Users view magnified copies of these images from this small volume with the help of an eyepiece that is either a Holographic Optical Element (HOE) or a set of lenses. Our HoloBeam prototypes demonstrate the thinnest AR glasses to date with submillimeter thickness (e.g., HOE film is only $120\ \mu m$ thick). In addition, HoloBeam prototypes demonstrate near retinal resolutions (24 cycles per degree) with a 70 degrees-wide field of view.

Type: Proceedings paper
Title: HoloBeam: Paper-Thin Near-Eye Displays
Event: 2023 IEEE Conference Virtual Reality and 3D User Interfaces (VR)
Dates: 25 Mar 2023 - 29 Mar 2023
ISBN-13: 9798350348156
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/VR55154.2023.00073
Publisher version: https://doi.org/10.1109/VR55154.2023.00073
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Visualization, Image resolution, Three-dimensional displays, Prototypes, Glass, Holography, Optical imaging
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science
URI: https://discovery.ucl.ac.uk/id/eprint/10171944
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