Open AccessHolographic near-eye display based on complex amplitude modulation with band-limited zone plates
Author(s) -
Yun Chen,
Minjie Hua,
Tianshun Zhang,
Mingxin Zhou,
Jianhong Wu,
Wenlong Zou
Publication year - 2021
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.431032
Subject(s) - optics , holographic display , holography , spatial light modulator , amplitude , exit pupil , image quality , physics , optical transfer function , eyepiece , spatial frequency , amplitude modulation , entrance pupil , wavefront , bandwidth (computing) , stereo display , computer science , artificial intelligence , pupil , frequency modulation , image (mathematics) , telecommunications , lens (geology)
A holographic near-eye display (NED) system based on complex amplitude modulation (CAM) with band-limited zone plates is proposed. The whole system mainly consists of a phase-only spatial light modulator (SLM), an Abbe-Porter filter system, an eyepiece, and an image combiner. The point source method based on band limited zone plates is used to accurately control the bandwidth of the target complex amplitude. The effects of intensity modulation coefficient γ in the frequency-filtering method on the intensity and the quality of reconstructed images are analyzed, which provide a judgment basis for selecting the appropriate value of γ. We also derive the expressions of the field of view (FOV) and exit pupil of the NED system. Since the holographic image is magnified in two steps in this system, the large FOV can be obtained. The optical experimental results show that the proposed system can provide a dynamic holographic three-dimensional (3D) augmented reality (AR) display with a 23.5° horizontal FOV.