Open AccessEnlarging field of view by a two-step method in a near-eye 3D holographic display
Author(s) -
Zhiqi Zhang,
Juan Liu,
Xinhui Duan,
Yongtian Wang
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.403538
Subject(s) - holographic display , holography , optics , stereo display , viewing angle , image quality , computer science , lens (geology) , field of view , virtual image , display device , computer vision , physics , image (mathematics) , liquid crystal display , operating system
The narrow field of view (FOV) has always been one of the most with limitations that drag the development of holographic three-dimensional (3D) near-eye display (NED). The complex amplitude modulation (CAM) technique is one way to realize holographic 3D display in real time with the advantage of high image quality. Previously, we applied the CAM technique on the design and integration of a compact colorful 3D-NED system. In this paper, a viewing angle enlarged CAM based 3D-NED system using a Abbe-Porter scheme and curved reflective structure is proposed. The viewing angle is increased in two steps. An Abbe-Porter filter system, composed of a lens and a grating, is used to enlarge the FOV for the first step and, meanwhile, realize complex amplitude modulation. A curved reflective structure is used to realize the FOV enlargement for the second step. Besides, the system retains the ability of colorful 3D display with high image quality. Optical experiments are performed, and the results show the system could present a 45.2° diagonal viewing angle. The system is able to present dynamic display as well. A compact prototype is fabricated and integrated for wearable and lightweight design.