Open AccessDesign of ghost-free floating 3D display with narrow thickness using offset lens and dihedral corner reflector arrays
Author(s) -
Sungwon Choi,
Sungwoong Park,
Sung−Wook Min
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.392036
Subject(s) - optics , integral imaging , offset (computer science) , corner reflector , image processing , reflector (photography) , lens (geology) , physics , computer science , image (mathematics) , computer vision , light source , programming language
A floating 3D display with a dihedral corner reflector array (DCRA) is presented to improve space efficiency and eliminate ghost images. Floating displays using a DCRA have the space efficiency problem of having a system thickness equal to the height of the floating image and the problem of a ghost image interrupting the visibility of the floating display. The DCRA is analyzed to find the ghost image region. Based on the analysis, an off-axis integral floating display is placed outside the ghost image region to avoid the ghost image. To increase space efficiency, the optical path is folded using a mirror. In addition, the off-axis integral floating display is used to create a tilt angle for projecting the input image onto the DCRA in a proposed confined and narrow system to observe the complete 3D image. The effectiveness of the system was verified through simulations and experiments.