A comprehensive approach to diffractive waveguide optimization in mixed reality near-eye displays

Tsung Xian Lee, Wan Pin Tsai, Yang Kuan Tseng, Ching Cherng Sun

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This study presents a comprehensive approach to optimizing diffractive waveguides for mixed reality near-eye displays by employing a hybrid method that integrates rigorous coupled wave analysis (RCWA) and Monte Carlo (MC) ray tracing. The primary objective is to enhance the performance of these waveguides by improving field of view (FoV), exit pupil size, and image uniformity. A bidirectional scattering distribution function (BSDF) is used as a bridge to facilitate communication between RCWA and MC ray tracing, enabling efficient simulation of various design parameters such as geometric dimensions and light sources. The results demonstrate a potential contribution to improving imaging efficiency, uniformity, and reduction of backward light leakage by simulation. Future work will focus on applying this method to designing mixed reality (MR) glasses to optimize exit pupil expansion (EPE), enhance FoV, and reduce crosstalk effects.

Original languageEnglish
Title of host publicationOptical Modeling and Performance Predictions XIV
EditorsMark A. Kahan, Catherine Merrill
PublisherSPIE
ISBN (Electronic)9781510679184
DOIs
StatePublished - 2024
EventOptical Modeling and Performance Predictions XIV 2024 - San Diego, United States
Duration: 19 Aug 202420 Aug 2024

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume13129
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceOptical Modeling and Performance Predictions XIV 2024
Country/TerritoryUnited States
CitySan Diego
Period19/08/2420/08/24

Keywords

  • Bidirectional Scattering Distribution Function
  • Diffractive Waveguides
  • Mixed Reality
  • Monte Carlo Ray Tracing
  • Near-Eye Displays
  • Rigorous Coupled Wave Analysis

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