Method for large field of view and eye-box for holographic waveguide display based on LED illumination

Tianyao Zhang, Yushi Kaneda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Holographic waveguide display takes the advantage of pupil expansion to increase the size of eye-box which can be widely employed into augmented reality (AR) systems. However, the angular selectivity of holographic optical elements (HOEs) used as in- and out-coupler for waveguide display is very limited when reading out by coherent light source like lasers. Here, we propose a method by utilizing broadband light source like LED with multilayer HOEs or multilayer waveguides, each pair of the in- and out-coupling HOEs or waveguides will be angularly separated to construct the specific angular region. Due to its decent spectrum selectivity of holographic couplers and multilayer structure, the field of view (FOV) of the display system can be significantly increased. Large eye-box is realized by employing pupil expansion for allowing the image to interact with out-couplers multiple times.

Original languageEnglish (US)
Title of host publicationPractical Holography XXXVII
Subtitle of host publicationDisplays, Materials, and Applications
EditorsPierre-Alexandre J. Blanche, Seung-Hyun Lee
PublisherSPIE
ISBN (Electronic)9781510659957
DOIs
StatePublished - 2023
EventPractical Holography XXXVII: Displays, Materials, and Applications 2023 - San Francisco, United States
Duration: Jan 31 2023Feb 1 2023

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12445
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferencePractical Holography XXXVII: Displays, Materials, and Applications 2023
Country/TerritoryUnited States
CitySan Francisco
Period1/31/232/1/23

Keywords

  • Augmented Reality
  • Holographic optical elements
  • Holographic waveguide display
  • Large field of view
  • LED

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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