作者：Chen, Jingsi¹;Qiao, Zhengyu¹;Huang, Yong¹;CAa;Hao, Qun¹; （¹School of Optics and Photonics, Beijing Institute of Technology, No. 5 South Zhongguancun Street, Beijing, 100081, China）

出处：Proceedings of SPIE - The International Society for Optical Engineering 2022

关键词：deep learning;noise model;noise reduction;Optical coherence tomography

摘要：Optical coherence tomography (OCT) as an interferometric imaging technique, suffers from massive noise. Denoising methods are applied essentially to i ...

作者：Meng, Danting¹;Huang, Yong¹;Hao, Qun¹; （¹School of Optics and Photonics, Beijing Institute of Technology, No. 5 South Zhongguancun Street, Haidian, Beijing, 100081, China）

出处：Proceedings of SPIE - The International Society for Optical Engineering 2022

关键词：gray matter;mask;Phase retardation;PSOCT;white matter

摘要：In brain imaging, it is necessary to accurately distinguish between white matter, made up of axons and their myelin sheaths, and gray matter, made up ...

作者：Yang, Ao¹;Cao, Jie¹;CAa;Li, Zhijun¹;Cheng, Yang¹;Hao, Qun¹;CAb （¹School of optics and photonics, Beijing Institute of Technology, Key Laboratory of Biomimetic Robots and Systems, Ministry of Education, Beijing, 100081, China）

出处：Proceedings of SPIE - The International Society for Optical Engineering 2021

关键词：3D imaging lidar;Depth image reconstruction;Full-waveform;Scanning strategy

摘要：Scanning lidar scans the target region point-by-point and measures the time of flight (TOF) of laser signal at each point to obtain the 3D information ...

作者：Cheng, Xuemin¹;CAa;Wang, Jindong¹;CAb;Hu, Yao²;Hao, Qun²; （¹Tsinghua Shenzhen International Graduate School, Tsinghua University, Guangdong, Shenzhen, 518055, China;²School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, China）

出处：Proceedings of SPIE - The International Society for Optical Engineering 2021

关键词：Coupling coefficient;Deformable mirror;Finite element analysis;Influence function;Optimization

摘要：The influence function of the actuators can be expressed as a Gaussian function. The exponent of the Gaussian function influences the reconstruction p ...

作者：Chang, Xu¹;Hao, Qun¹;Hu, Yao¹;CAa;Tao, Xin¹;Lv, Jiahang¹;Wang, Zhen¹;Liu, Yiming¹;Cheng, Xuemin²; （¹Beijing Key Lab. for Precision Optoelectronic Measurement Instrument and Technology, School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, China;²Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, China）

出处：Proceedings of SPIE - The International Society for Optical Engineering 2021

关键词：AR/VR;Description method;Fitting accuracy;Fitting speed;Freeform surface;Parameter analysis

摘要：In AR and VR devices, freeform surfaces are widely used to improve system performance. The manufacture of freeform surfaces is limited to the measurem ...

作者：Xu, Bowen¹;Wang, Shanshan¹;Song, Ci²;Hou, Yinlong³;Shi, Feng²;Hao, Qun¹; （¹School of Optoelectronics, Beijing Institute of Technology, Beijing, 100081, China;²College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha, 410073, China;³School of Automation, Xi\'an University of Posts & Telecommunications, Xi\'an, 710121, China）

出处：Proceedings of SPIE - The International Society for Optical Engineering 2021

关键词：Optical mirror;reverse Hartmann test;small grinding head machine tools;surface shape on-site measurement

摘要：High-precision optical systems are increasingly being used in military, civil and aerospace fields. Computer numerical control small grinding head gri ...

作者：Song, Liyuan^a,b,c;Tang, Libin^a,b,c;CAa;Hao, Qun¹;CAb;Yang, Chunli²;Teng, Kar Seng⁴;CAc;Wang, Haipeng²;Li, Junbin²; （¹The Laboratory of Photonics Information Technology, Ministry of Industry and Information Technology, School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, China;²Kunming Institute of Physics, Kunming, 650223, China;³Yunnan Key Laboratory of Advanced Photoelectronic Materials & Devices, Kunming, 650223, China;⁴Department of Electronic and Electrical Engineering, Swansea University, Bay Campus, Fabian Way, Swansea, SA1 8EN, United Kingdom）

出处：Proceedings of SPIE - The International Society for Optical Engineering 2022

关键词：photoelectrical properties;preparation;SnTe nanofilm

摘要：As a topological crystal insulator, tin telluride (SnTe) has unique properties that are different from those of traditional topological insulators. Du ...

作者：Gao, Ziqi¹;Cheng, Xuemin¹;CAa;Zhang, Linfeng¹;Hu, Yao²;Hao, Qun²;CAb （¹Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China;²School of Optics and Photonic, Beijing Institute of Technology, Beijing, 100081, China）

出处：Journal of Optics (United Kingdom) 2020

关键词：compressive ghost imaging;intelligent sampling;scattering medium

摘要：Compressive ghost imaging (CSGI) combines structured illumination and a bucket detector for obtaining the light intensity signal from an unknown objec ...

作者：乔正钰¹;，黄勇^1,2;，郝群^1,2; （¹北京理工大学光电学院；²北京理工大学长三角研究院）

出处：数据采集与处理 2024

关键词：光学相干层析；计算成像；轴向横向分辨率；焦深解耦；像差校正

摘要：光学相干层析成像（Optical coherence tomography， OCT）作为一种重要的无损断层三维成像技术，应用场景广泛。不断发展的场景需求对OCT 技术的性能提出了新的要求，包括分辨率提升、焦深解耦、像差校正及分辨率各向异性改善等。在过去的十几年内，一系列基于计算成像的方法被证明能有 ...

发明人：郝群，乔志博，程阳，姚灿灿，欧阳琦

申请日期：2024.04.08

摘要：本发明属于摄像技术领域。公开一种Alvarez变焦透镜驱动机构及驱动装置，包括：外壳；旋转盘，连接在外壳内，且被配置为可相对外壳旋转，旋转盘上开设有一对弧形槽，弧形槽的两端部靠近旋转盘中心的距离不同；以及，第一透镜单元和第二透镜单元，分别与外壳限位滑动配合；其中，第一透镜单元的伸出端和第二透镜单元的 ...