Augmented-reality display system using liquid-crystalline microlens array for three-dimensional/two-dimensional image conversion

Munkh Uchral Erdenebat, Anar Khuderchuluun, Tuvshinjargal Amgalan, Ki Chul Kwon, Tae Hyun Lee, Hak Rin Kim, Nam Kim

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

3 Scopus citations

Abstract

This report proposes a three-dimensional/two-dimensional switchable augmented-reality display system using a liquid-crystalline lens array and an electrical polarizer. A depth camera that is connected to the proposed augmented-reality display system acquires the three-dimensional or two-dimensional information of the real objects. Here, the dual-function liquid-crystalline lens array is switched its function according to the polarizing directions of an electrical polarizer. The proposed system's overall procedure is as follows: the depth camera captures the depth/color, or only color image according to the switcher of a polarizer, and the three-dimensional or two-dimensional images are displayed separately on the augmented-reality display system. It gives an opportunity that three-dimensional and two-dimensional modes can be switched automatically. In the two-dimensional mode, the captured color image of a real object is displayed directly. In the three-dimensional mode, the elemental image array is generated from the depth and color images and reconstructed as a three-dimensional image by the liquid-crystalline microlens array of a proposed augmented-reality display system. Even the proposed system cannot be implemented the real-time display in the three-dimensional mode, the direction-inversed computation method generates the elemental image arrays of the real object within a possible short time.

Original languageEnglish
Title of host publicationAdvances in Display Technologies XII
EditorsJiun-Haw Lee, Qiong-Hua Wang, Tae-Hoon Yoon
PublisherSPIE
ISBN (Electronic)9781510649194
DOIs
StatePublished - 2022
EventAdvances in Display Technologies XII 2022 - Virtual, Online
Duration: 20 Feb 202224 Feb 2022

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12024
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceAdvances in Display Technologies XII 2022
CityVirtual, Online
Period20/02/2224/02/22

Keywords

  • 2D/3D convertible
  • AR display
  • Holographic waveguide
  • liquid-crystalline lens array

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