Innovative 3D/2D Augmented Reality System Based on a Liquid-Crystalline Microlens Array and Full-Color Holographic Optical Element

Munkh Uchral Erdenebat, Tuvshinjargal Amgalan, Anar Khuderchuluun, Hui Ying Wu, Ki Chul Kwon, Jae Won Lee, Tae Hyun Lee, Asad Nauman, Hak Rin Kim, Nam Kim

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

We present a novel augmented reality (AR) display system utilizing a holographic optical element (HOE)-based approach, featuring seamless switching between three-dimensional (3D) and two-dimensional (2D) modes through a liquid-crystalline microlens array (LC-MLA). The proposed system aims to capture and present comprehensive spatial information on real-world objects. The LC-MLA is customized to suit the purpose of the proposed system, and its functionality seamlessly switches via an electrical polarizer, allowing users to effortlessly toggle between modes by simply pressing a switch button. An integrated control system automates corresponding tasks based on the selected mode. In 2D mode, the captured image is directly displayed, while in 3D mode, an elemental image array (EIA) is generated and reconstructed into a 3D image, through the LC-MLA. To ensure optimal performance for the proposed system, a custom-fabricated LC-MLA, and full-color HOE combiner have been developed. Additionally, we designed and implemented a bespoke integrated control system that synchronizes and interconnects the main devices seamlessly.

Original languageEnglish
Article number7600308
Pages (from-to)1-8
Number of pages8
JournalIEEE Journal of Selected Topics in Quantum Electronics
Volume30
Issue number2
DOIs
StatePublished - 1 Mar 2024

Keywords

  • 3D/2D display
  • augmented reality system
  • depth camera
  • full-color holographic optical element
  • liquid-crystalline microlens array (LC-MLA)
  • real-object
  • see-through display

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