MSSPUNet: phase unwrapping using a multi-scale, multi-stage deep neural network for digital holographic tomography [0.03%]
基于多尺度、多阶段深度神经网络的数字全息层析解包裹算法
Yaoqing Xie,Youxing Li,Hongwei Li et al.
Yaoqing Xie et al.
Digital holographic tomography (DHT) is an advanced phase-imaging-based measurement technique widely used for 3D reconstruction. However, the generated phase images often suffer from significant noise interference and irregular distortions,...
Systematic framework for the optimization and validation of a compact optical system using commercial off-the-shelf components [0.03%]
基于商用现货组件的紧凑型光学系统优化与验证体系结构
Hong-Lin Huang,Chien-Fang Ding
Hong-Lin Huang
This study presents and validates a systematic design framework for developing high-performance, low-magnification, compact optical systems composed of commercial off-the-shelf (COTS) components, specifically tailored for industrial applica...
Three-dimensional Scheimpflug principle and its application to full-focus positioning [0.03%]
三维施切普夫原理及其在全息定位中的应用
Kazuyuki Kobayashi,Momoka Ichikawa,Kazuki Nishi
Kazuyuki Kobayashi
The Scheimpflug principle specifies the relationship between the object, lens, and image planes, providing conditions for focusing the entire image plane even for tilted objects. This classical principle is confined to unidirectional tiltin...
Optical system design of an elliptical-hyperbolic lens set for semiconductor laser beam shaping and collimating a hollow beam [0.03%]
用于半导体激光器光束整形和空心光束准直的椭圆双曲透镜光学系统设计
Yuhang Zhang,Jiaoyu Sun,Nuo Chen et al.
Yuhang Zhang et al.
In order to solve the problem of energy loss at the center of the Cassegrain antenna, an optical system based on an elliptical-hyperbolic lens set is innovatively designed in this paper, which can shape and convert the elliptical divergent ...
Research for a type of aspheric E-H hollow beam shaping and fiber-coupled defocus characteristics [0.03%]
一种非球面E-H空心光束整形及保角聚焦特性研究
Jiaoyu Sun,Yuhang Zhang,Shunda Wang et al.
Jiaoyu Sun et al.
The integration of space optical communication and fiber optical system plays a vital role in satellite communications and deep space exploration. However, achieving efficient fiber coupling under defocus conditions remains a key challenge....
Maik Locher,Elise Blackmore,Zhao-Kai Wang et al.
Maik Locher et al.
We recently introduced adaptive Fresnel lenses (AFLs) based on complementary cylindrical lenses "bent into" spirals. Here, we start to investigate the wave optics of such components. We calculate typical point-spread functions and investiga...
Spiral adaptive Fresnel lens: generalizations, improvements, and augmented-reality/virtual-reality simulations [0.03%]
螺旋自适应菲涅耳透镜：泛化、改进及增强现实/虚拟现实模拟
Maik Locher,Di Wu,Johannes Courtial
Maik Locher
Two complementary cylindrical lenses, each bent into a spiral, can form the components of an adaptive Fresnel lens whose focusing power can be tuned by rotating the two components relative to each other [Armstrong et al., J. Opt. Soc. Am. A...
Correlations of the phase fluctuations in the presence of weak scintillations [0.03%]
弱闪烁存在下的相位涨落间的相关性
I V Kolokolov,V V Lebedev,F A Starikov
I V Kolokolov
We investigate the pair correlation function of the random phase component of light waves propagating through turbulent media. Specifically, we focus on the correlation function of phase gradients, considering the case of Gaussian initial p...
Santanu Konwar,Nimish Gupta
Santanu Konwar
Defocus is a major optical aberration affecting imaging and beam propagation across various fields. While existing measurement techniques often require complex wavefront reconstruction, modal wavefront sensors (MWSs) and astigmatic defocus ...
Topological charge recognition of vortex beams based on a convolutional neural network [0.03%]
基于卷积神经网络的涡旋光束拓扑电荷识别
Tengfei Chai,Xiaoyun Liu,Hongwei Wang et al.
Tengfei Chai et al.
The application of vortex beams in optical communications is significantly constrained by wavefront distortions caused by atmospheric turbulence and system-induced aberrations. In high-energy laser systems, spherical and coma aberrations ar...