Paper 12913-17
Improved AR waveguide hologram model for accurate exit pupil expander simulation using the RCWA method
On demand | Presented live 29 January 2024
Abstract
Diffractive optical devices are essential in developing compact and thin augmented reality (AR) devices. Surface-reliefgratings (SRG) and volume-holographic gratings (VHG) are typical gratings with periodic material changes. VHG is relatively easy to manufacture, making it a popular choice for R&D teams developing AR exit pupil expander (EPE) applications. In the past, the Kogelnik algorithm was combined with the Ansys Zemax OpticStudio ray tracing engine to simulate VHG for AR applications. However, due to its more approximate calculations, the accuracy of this method is lower than that of the rigorous coupled wave analysis (RCWA) method. This study aims to investigate the theoretical differences between the Kogelnik and RCWA methods, implement their algorithms in practice, and compare the accuracy of the two methods for AR EPE applications using the Zemax OpticStudio ray tracing engine.
Presenter
Ansys Japan K.K. (Japan)
Responsible for Japanese Application Engineers for Ansys Optical products in Japan, and APAC Application Engineers Zemax products as Manager of Application Engineering.
Previously worked as an optical lens designer at a plastic lens manufacturing company, Nalux, Co., Ltd.
Joined Zemax in April 2019 as a Principal Optical Engineer
Joined Ansys in October 2021
Ph.D. in Physics at the Tokyo Institute of Technology
MSc in Physics at Queen’s University