Open AccessEnhancement of depth-of-field in a direct projection-type integral imaging system by a negative lens array
Author(s) -
Lei Zhang,
Yong Yang,
Xing Zhao,
Zhiliang Fang,
Xiaocong Yuan
Publication year - 2012
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.20.026021
Subject(s) - optics , integral imaging , diffuser (optics) , depth of field , projection (relational algebra) , lens (geology) , computer simulation , physics , computer science , image (mathematics) , algorithm , computer vision , light source , mechanics
We propose a method for enhancing depth-of-field, in which the spot size on a marginal depth plane is reduced. This method is implemented in a projection-type integral imaging system using a negative lens array without a diffuser. Numerical simulation results show that the spot size is merely 5.7% of that in a conventional system. Thus, the depth-of-field in the proposed system is enhanced by 17.5 times over that in a conventional system. Optical experiments confirm good agreement between the results and numerical predictions.