Work

Optimization of a light field hologram via double-phase constrained spectrum tiling regularized by angular sampling

Year: 2025

Type: article

Abstract: A realistic holographic near-eye display (NED) requires uniform energy distribution within the eyebox, enabling users to have an immersive visual experience at various positions within the eyebox. However, the demand for observing low-speckle viewpoint images at different locations within the eyebox remains poorly addressed. In this study, a double-phase constrained spectrum titling encoding method is proposed for optimization of the light field hologram, which suppresses the speckle in all view images efficiently. To mitigate the uncertain effect of the perspective number of the input light field to optimization, an implicit angular sampling regulation is derived, which reversely offers the criteria for angular sampling of the holographic light field. Numerical and optical experimental results demonstrate that compared with advanced related methods, the proposed method yields reconstructed images with the least speckle noise under different pupil states, enabling users to observe high-quality corresponding viewpoint images at various positions within the eyebox.

Source: Optics Express

DOI: 10.1364/oe.572023

Authors: Junjie Wei, Hongkun Cao, Xin Jin

Institution: Peng Cheng Laboratory

Language: English

Topic: Advanced Optical Imaging Technologies

Subfield: Media Technology

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funder: National Natural Science Foundation of China