作者:罗先刚1,2,3;,王涌天4,5;,赵建林6,7,8,9,10,11,12; (1中国科学院光电技术研究所;2微细加工光学技术国家重点实验室;3中国光学学会光学制造专业委员会;4北京理工大学;5北京市混合现实与新型显示工程技术研究中心;6西北工业大学物理科学与技术学院;7超常条件材料物理与化学教育部重点实验室;8陕西省光信息技术重点实验室;9中国光学学会全息与光信息处理专业委员会;10高速摄影与光子学专业委员会;11中国仪器仪表学会光机电系统与集成分会;12《光学学报》执行主编)
出处:光学学报 2023
摘要:光学设计与制造是一门古老而又新颖的学科。昔日,伽利略用望远镜观察宇宙,列文虎克用显微镜探索微观世界,达盖尔用照相机记录世界,他们一次次地丰富了人类的视野,推动了人类的进步;如今,光学系统正在突破传统结构的限制,将曾被认为不可能的目标一一达成。人类已能够借助现代光学系统探索更深邃的宇宙,观察更细微的生 ...
作者:Hu Yuan,Jiang Huilin,Tong Shoufeng,Zhang Lizhong,Wang Yongtian (School of Optoelectronics,Beijing Institute of Technology,Beijing 100081,China;National Defence Key Laboratory of Air to Ground Laser Communication,Changchun University of Science and Technology,Changchun,Jilin 130022,China;National Defence Key Laboratory of Air to Ground Laser Communication,Changchun University of Science and Technology,Changchun,Jilin 130022,China;School of Optoelectronics,Beijing Institute of Technology,Beijing 100081,China)
出处:第十届全国激光技术与光电子学学术会议 2015
摘要:For a long communication distance,the divergence angle of laser transmitting by space laser communication system must be narrow to solve the energy pr ...
作者:朱敏,贾甲,刘娟,邹炳锁,王涌天,王涌天 (北京理工大学材料学院;北京理工大学光电学院;北京理工大学微纳中心)
出处:首届国际微纳米体系发光及光电性质学术会议 2014
摘要:三维(3D)显示技术可大幅提高人们的视觉感受,成为下一代显示技术发展的主流方向.如同平板显示中的液晶屏一样,承接材料是全息三维显示系统的核心组成部分之一,决定着全息重建图像的质量.目前研究较多的稀有气体、稀土玻璃、有机染料等承接材料存在着诸多问题,不能满足三维显示发展需求.因此,发展满足全息显示需求 ...
作者:汤海松1,2;,冯泽心1,2;,程德文1,2;,王涌天1,2; (1Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology;2MOE Key Laboratory of Optoelectronic Imaging Technology and Systems, Beijing Institute of Technology)
出处:中国光学快报(英文版) 2023
关键词:propagation methods;computation methods;nonimaging optics;lenses
摘要:We implement Monte Carlo-based parallel ray tracing to achieve quick irradiance evaluation for freeform lenses with nonuniform rational B-splines(NURB ...
作者:Ruizhe Zhao,Lingling Huang,Yongtian Wang (School of Optics and Photonics,Beijing Institute of Technology,Beijing Institute of Technology,Beijing 100081,China)
出处:PhotoniX 2020
作者:Jiahao Wei,1;Chenxiao Wei,1;Haowen Ma,1;Dapu Pi,1;Haifeng Li,2;Xu Liu,2;Yongtian Wang,1;and Juan Liu1,;; (1Beijing Engineering Research Center for Mixed Reality and Advanced Display, MoE Key Lab of Photoelectronic Imaging Technology and System, School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China 2State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China Corresponding author: juanliu@bit.edu.cn)
出处:Optics Express 2023
关键词:Diffraction theory;Digital micromirror devices;Fresnel diffraction;Holographic displays;Holographic recording;Image quality
摘要:In this paper, we propose a convolutional symmetric compressed look-up-table (CSC-LUT) method to accelerate computer-generated hologram (CGH) computat ...
作者:Zhaoxian Su31;Wenlong Gao32;Bingyi Liu12;Lingling Huang41;Yongtian Wang1; (1Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, People\'s Republic of China;2Department of Physics, Paderborn University, Warburger Str. 100, 33098 Paderborn, Germany)
出处:New Journal of Physics 2022
关键词:topological semimetal;metamaterial;Dirac point;topological phase transition
摘要:Three-dimensional (3D) semimetals with fourfold degenerate Dirac points are of prominent importance in topological photonics as the parent states to W ...
作者:Yi Xiao1;Hao Sha1;Huaying Hao1;Yue Liu1;
出处:Displays 2023
摘要:Recovering 3D hand mesh from a monocular RGB image has a wide range of application scenarios such as VR/AR. The parametric hand model provides a good ...
作者:王家骏,刘越,吴宇晖,沙浩,王涌天 (北京理工大学光电学院北京市混合现实与新型显示工程技术中心)
出处:光学学报 2023
关键词:机器视觉;深度估计;单目三维重建;神经网络
摘要:提出了一种针对室内场景的轻量化端到端单目深度估计神经网络。首先设计了新型自适应深度分布估计模块,可针对不同输入图像估计差异化的深度范围,使得网络更好地预测室内物体的相对位置关系,恢复出的深度图像能获得更接近真实值的像素分布。其次,在深度估计的过程中,通过基于平面系数的深度间接表示形式加入平面隐式约束 ...
作者:周丽军1,2;,杨通1,2;,程德文1,2;,王涌天1,2; (1北京理工大学光电学院;2北京市混合现实与新型显示工程技术研究中心)
出处:红外与激光工程 2023
关键词:自由曲面;光学设计;方域正交多项式;面形描述;矢高差
摘要:自由曲面为光学系统设计带来了新的设计自由度,可以实现性能与参数更高、结构更紧凑的系统,但自由曲面的加工与检测难度较大,应在设计过程中对工艺性进行实时表征与控制。使用正交多项式面型可以较为容易地实现自由曲面同基底曲面矢高差的控制,但目前常用的大多是在圆域内正交的多项式,对于自由曲面离轴非对称系统中曲面 ...