Open AccessCompact multi-projection 3D display system with light-guide projection
Author(s) -
ChangKun Lee,
Soongi Park,
Seokil Moon,
Jong Ha Hong,
Byoungho Lee
Publication year - 2015
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.23.028945
Subject(s) - projection (relational algebra) , optics , distortion (music) , diffuser (optics) , computer vision , structured light , focus (optics) , computer science , 3d projection , artificial intelligence , graphical projection , position (finance) , structured light 3d scanner , lens (geology) , projection plane , computer graphics (images) , image (mathematics) , physics , light source , algorithm , telecommunications , amplifier , scanner , bandwidth (computing) , finance , economics
We propose a compact multi-projection based multi-view 3D display system using an optical light-guide, and perform an analysis of the characteristics of the image for distortion compensation via an optically equivalent model of the light-guide. The projected image traveling through the light-guide experiences multiple total internal reflections at the interface. As a result, the projection distance in the horizontal direction is effectively reduced to the thickness of the light-guide, and the projection part of the multi-projection based multi-view 3D display system is minimized. In addition, we deduce an equivalent model of such a light-guide to simplify the analysis of the image distortion in the light-guide. From the equivalent model, the focus of the image is adjusted, and pre-distorted images for each projection unit are calculated by two-step image rectification in air and the material. The distortion-compensated view images are represented on the exit surface of the light-guide when the light-guide is located in the intended position. Viewing zones are generated by combining the light-guide projection system, a vertical diffuser, and a Fresnel lens. The feasibility of the proposed method is experimentally verified and a ten-view 3D display system with a minimized structure is implemented.