1. HoloBeam: Paper-Thin Near-Eye Displays
- Author
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Akşit, Kaan and Itoh, Yuta
- Subjects
I.3.1 ,FOS: Computer and information sciences ,I.3.2 ,I.3.7 ,Computer Science - Human-Computer Interaction ,FOS: Physical sciences ,Graphics (cs.GR) ,Human-Computer Interaction (cs.HC) ,Computer Science - Graphics ,Hardware Architecture (cs.AR) ,Computer Science - Hardware Architecture ,Physics - Optics ,Optics (physics.optics) - Abstract
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 (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 a submillimeter thickness (e.g., HOE film is only 120 um thick). In addition, HoloBeam prototypes demonstrate near retinal resolutions (24 cycles per degree) with a 70 degrees-wide field of view., Comment: 15 pages, 18 Figures, 1 Table, 1 Listing
- Published
- 2023