发明人：黄玲玲，祝双琦，董博文，王涌天

申请日期：2023.12.26

摘要：本发明公开一种异质集成太赫兹超颖表面实现动态可调几何相位的装置，并在此基础上提一种实现几何相位动态可调的方法，属于微纳光学领域。超颖表面上的复合天线由金和可调谐材料氧化钒异质集成的双层分裂圆环组成，通过调节二者之间的相对旋转位置，能够像素级赋予透射光场特定复振幅，继而根据全息编码实现在室温和高于氧化 ...

作者：李昕，徐正琨，杨静育，王涌天，黄玲玲 （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研究中心； 北京理工大学光电学院光电成像技术与系统教育部重点实验室； 北京理工大学光电学院信息光子技术工信部重点实验室）

出处：Laser & Optoelectronics Progress 2024

关键词：相位成像；超表面；剪切干涉；涡旋相衬

摘要：相位是光场信息的重要组成部分。在光学显微成像领域，大部分生物细胞对光的吸收较弱，传统的亮场显微无法准确地表征细胞的结构特征，因此相位成像成为非标记细胞观测的重要方法。经典的相衬显微镜基于干涉成像原理，通常需要大块的折射棱镜或者复杂的成像系统，因而系统臃肿，易受环境扰动。超表面是一种特征尺寸在纳米或微 ...

发明人：丁贺，彭焰秀，盛兴，杨健，王涌天

申请日期：2022.10.28

摘要：基于生物电信号和化学信号的光学传感器及其制备方法，通过采用金属有机化学气相沉积在砷化镓基底上生长具有InGaP基LED和GaAs基DJPD的光电上转换器件；利用转移印刷技术将光电上转换器件剥离原衬底并转移至新衬底聚酰亚胺基板上；采用紫外光刻和反应离子蚀刻工艺在光电上转换器件上使PEDOT:PSS层形 ...

作者：杨斯雯，黄玲玲，王涌天 （北京理工大学 光电学院 光电成像技术与系统教育部重点实验室）

出处：Optical Technique 2023

关键词：共形超表面；偏振复用

摘要：共形超表面可以打破几何形状与光学功能之间的限制, 可以显著改善任意曲面物体的光学特性,进而将超表面功能拓展到具有任意形状的组件中。当前尚未报道将偏振复用技术运用到共形超表面从而实现多偏振通道的多功能设计。文章设计了一种曲面基底的偏振复用超表面, 基于传输相位调制原理设计了共形超表面的单元结构, 使得 ...

作者：M.M. Talha^1,2;Jun Chang¹;Yongtian Wang¹;CA1;Dewen Cheng^1,3;Tingcheng Zhang¹;M. Aslam⁴;A. Naeem Khan⁴; （¹College of Optoelectronics, Beijing Institute of Technology, Beijing 100081, PR China;²Department of Electronic Engineering, Faculty of Engineering and Technology, International Islamic University, P.C. 44000, Islamabad, Pakistan;³College of Optical Sciences, University of Arizona, 1630 E University Blvd, Tucson, AZ 85721, USA;⁴IICS, P.O. Box 1384, Islamabad, Pakistan）

出处：Optik 2010

摘要：A computer-generated hologram (CGH) null compensator has been designed for optical metrology of a freeform surface (FFS) with positive base radius. Th ...

作者：Mao, Boyu;Yang, Tong;Xu, Huiming;Cheng, Dewen;Wang, Yongtian

出处：Optical Design and Testing XIII 2023 2023

关键词：Imaging systems;Education and training;Design and modelling;Machine learning;Chemical elements;Ray tracing;Optical components;Systems modeling;Distortion;Holographic optical elements

摘要：Imaging systems consisting of flat phase elements can achieve more compactness and lighter-weight. In this paper, we propose a design framework of off ...

作者：Xu, Huiming;Yang, Tong;Cheng, Dewen;Wang, Yongtian

出处：Optical Design and Testing XIII 2023 2023

关键词：Image restoration;Imaging systems;Point spread functions;Image processing;Ray tracing;Optical surfaces;Image quality

摘要：In recent years, the use of freeform optical surfaces in optical system design has experienced a significant increase, allowing systems to achieve a l ...

作者：Li, Haoran;Tang, Haisong;Feng, Zexin;Luo, Yi;Wang, Yongtian

出处：Optical Design and Testing XIII 2023 2023

关键词：Optical surfaces;Ray tracing;Light sources and illumination;Lens design;3D projection;Light sources;Design and modelling;Numerical analysis;Partial differential equations;Spherical lenses

摘要：We previously optimized the freeform surfaces using extended polynomials in stereographic projection coordinates based on an automated workflow linkin ...

作者：Yongyao Yin¹;Qiang Jiang¹;Hongbo Wang¹;Jianghong Liu¹;Yiyang Xie²;Qiuhua Wang³;Yongtian Wang¹;Lingling Huang¹; （¹ Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing, China. ² Optoelectronics Technology, Ministry of Education, Beijing University of Technology, Beijing, 100124, China. ³ Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, China.）

出处：Advanced materials (Deerfield Beach, Fla.) 2024

关键词：end-to-end;hologram;inverse design;metasurface.

摘要：Multi-dimensional multiplexed metasurface holography extends holographic information capacity, promises revolutionary advancements for vivid imaging, ...

作者：Jianghao Xiong;Haizheng Zhong;Dewen Cheng;Shin-Tson Wu;Yongtian Wang （Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing, China MIIT Key Laboratory for Low-dimensional Quantum Structure and Devices, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing, China Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing, China College of Optics and Photonics, University of Central Florida, Orlando, Florida, USA, 32816 Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing, China）

出处：SID Symposium Digest of Technical Papers 2024

关键词：Liquid crystal;holographic optics;retinal scanning display;freeform optics

摘要：Liquid crystal polarization holograms (LCPHs) based on photo-alignment and self-assembled liquid crystal are attractive for the attributes like microm ...