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10th Symposium on Novel Optoelectronic detection technology and Applications

作者： Jie, Cao Chenyu, Xu Sirui, Guo Bin, Han Qun, Hao School of Optics and Photonics Beijing Institute of Technology Beijing100081 China Yangtze Delta Region Academy of Beijing Institute of Technology Zhejiang Jiaxing314003 China National Key Laboratory on Near-Surface Detection Beijing100072 China Changchun University of Science and Technology Jilin Changchun130022 China

ISBN: (数字)9781510688155

ISBN: (纸本)9781510688148

With the widespread application of 3D point clouds in various fields such as remote sensing reconnaissance and intelligent driving, the demand for efficient point cloud processing technology is increasingly growing. This paper introduces a resolution-adaptive processing method inspired by bionic vision, which simulates the human visual system's ability to focus on regions of interest (ROI) while maintaining high resolution in the ROI areas and reducing the resolution of surrounding areas. First, deep learning technology is utilized to construct an ROI detection network capable of identifying key targets within the point cloud. Subsequently, a bionic dynamic resolution processing based on the region of interest is applied to reconcile the contradiction between resolution and data volume. Finally, we propose a bionic retinal mechanism for 3D target recognition, and the results demonstrate that this method significantly improves the processing speed and target recognition accuracy in the field of 3D point cloud target identification. This study provides a new technical approach for 3D point cloud data processing, offering favorable support for technological advancements and application expansion in related fields of 3D point clouds. © 2025 SPIE.

关键词： 3D point cloud 3D target recognition Intelligent driving Resolution-adaptive processing

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Rapid detection of Deformable Mirrors Based on Phase Measuring Deflectometry 10

Rapid Detection of Deformable Mirrors Based on Phase Measuri...

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10th Symposium on Novel Optoelectronic detection technology and Applications

作者： Li, Zhaoyang Wang, Shanshan Zhou, Shuhong Zhang, Nansheng Fu, Tao Hao, Qun National Key Laboratory on Near-Surface Detection Beijing100072 China School of Optics and Photonics Beijing Institute of Technology Beijing100081 China Shanghai Aerospace Control Technology Institute Shanghai201109 China School of Opto-Electronic Engineering Changchun University of Science and Technology Changchun130022 China

ISBN: (数字)9781510688155

ISBN: (纸本)9781510688148

Deformable mirrors play a critical role in adaptive optics systems, and as the precision demands of optical systems continue to rise, the accurate detection of deformable mirror shape and performance becomes essential to the overall system's effectiveness. Improved detection methods can significantly enhance the design quality and manufacturing precision of deformable mirrors. In this paper, we introduce a phase measuring deflectmetry that directly measures slope variations to detect the surface deformation of deformable mirrors. To further enhance measurement accuracy, monitoring stations are integrated into the system. We conducted measurements on a 100mm-diameter deformable mirror, and through comparisons of simulation and experimental results, we verified that the system provides high measurement accuracy and real-time monitoring of dynamic error influences. This system is well-suited for long-term monitoring of surface changes in deformable mirrors. © 2025 SPIE.

关键词： Adaptive optics

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Research on multi-layer lobster eye detection technology 10

Research on multi-layer lobster eye detection technology

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10th Symposium on Novel Optoelectronic detection technology and Applications

作者： Ji, Fan Wang, JunYa Chang, Jun Zhang, YunQiang Key Laboratory of Photoelectronic Lmaging Technology and System of Ministry of Education of China School of Optics and Photonics Beijng Institute of Technology Beijng100081 China National Key Laboratory on Near-surface Detection Beijing100072 China National Key Laboratory of Air-based Information Perception and Fusion Luoyang471009 China

ISBN: (数字)9781510688155

ISBN: (纸本)9781510688148

This paper focuses on the imaging technology of multi-layer lobster vision system based on infrared band, aiming to develop a multi-layer lobster eye coordination optical system that can improve the energy concentration. By designing the structure of the lobster eye lens and using the ray tracing software for simulation analysis, the energy concentration of the center of the cross focal spot generated by the lens is analyzed in detail. The optical system of multi-layer lobster eye lens is also designed to achieve the goal of increasing the energy concentration of the system. The whole study not only optimizes the performance of the optical system, but also provides an important theoretical and practical basis for the future application of bionic optical systems. © 2025 SPIE.

关键词： Ray tracing

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All-solid-state omnidirectional fast scanning using liquid crystal optical phased array and conical mirror

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Optics Express 2025年第8期33卷 18124-18135页

作者： Zhou, Shuanglong Cao, Jie Hao, Qun Li, Wenrui Sheng, Yunlong Chen, Honglin Gao, Zhen Hui Ji, Pengcheng School of Mechanical Engineering Shandong University of Technology Zibo255000 China School of Optics and Photonics Beijing Institute of Technology Beijing100081 China National Key Laboratory on Near-Surface Detection Beijing100072 China School of Opto-Electronic Engineering Changchun University of Science and Technology Changchun130022 China Zibo Special Equipment Inspection Institute Zibo Market Supervision and Administration Bureau Zibo25000 China School of Physics and Electronies Engineering Shanxi University Taiyuan030006 China

Optical phased arrays (OPAs) are a key technology in solid-state beam scanning, capable of achieving beam steering and scanning without relying on any mechanical moving parts. However, their application in the field of scanning is constrained by two significant limitations: a narrow scanning field of view (FOV) and long scanning periods. To address these limitations, we propose an omnidirectional scanning model combining a liquid crystal optical phased array (LC-OPA) and a conical mirror. The experimental results demonstrate that by generating annular beams with the LC-OPA and combining them with a passive conical mirror, a scanning FOV of 360°×2.1° was achieved. The scanning error was less than 0.04°, and the scanning period was reduced to 1/4800 that of a two-dimensional grating scanning system, and no mechanical moving parts were involved. © 2025 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.

关键词： Mirrors

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Intelligent tailoring of a broadband orbital angular momentum comb towards efficient optical convolution

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Photonics Research 2025年第5期13卷 1148-1157页

作者： Zhou, Shiyun Li, Lang Wang, Yishu Gao, Liliang Zhang, Zhichao Gao, Chunqing Fu, Shiyao School of Optics and Photonics Beijing Institute of Technology Beijing100081 China Key Laboratory of Photoelectronic Imaging Technology and System Ministry of Education Beijing100081 China Key Laboratory of Information Photonics Technology Ministry of Industry and Information Technology Beijing100081 China National Key Laboratory on Near-surface Detection Beijing100072 China

Due to the high-dimensional characteristics of photon orbital angular momentum (OAM), a beam can carry multiple OAMs simultaneously thus forming an OAM comb, which has been proved to show significant potential in both classical and quantum photonics. Tailoring broadband OAM combs on demand in a fast and accurate manner is a crucial basis for their application in advanced scenarios. However, obtaining phase-only gratings for the generation of arbitrary desired OAM combs still poses challenges. In this paper, we propose a multi-scale fusion learning U-shaped neural network that encodes a phase-only hologram for tailoring broadband OAM combs on-demand. Proof-of-principle experiments demonstrate that our scheme achieves fast computational speed, high modulation precision, and high manipulation dimensionality, with a mode range of −75 to +75, an average root mean square error of 0.0037, and a fidelity of 85.01%, all achieved in about 30 ms. Furthermore, we utilize the tailored broadband OAM combs in conducting optical convolution calculation, enabling vector convolution for arbitrary discrete functions, showcasing the extended capability of our proposal. This work opens, to our knowledge, new insight for on-demand tailoring of broadband OAM combs, paving the way for further advancements in high-dimensional OAM-based applications. © 2025 Chinese Laser Press.

关键词： Angular momentum

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Candidate Evaluation with Multimodal Data-Driven for Recruitment 27th

Candidate Evaluation with Multimodal Data-Driven for Recru...

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27th International Conference on Pattern Recognition, ICPR 2024

作者： Wu, Xing Liu, Kehong Wang, Jianjia Yao, Junfeng Deng, Bin Lv, Rongqi Song, Jun School of Computer Engineering and Science Shanghai University Shanghai200444 China Shanghai Institute for Advanced Communication and Data Science Shanghai University Shanghai200444 China School of AI and Advanced Computing XJTLU Entrepreneur College Xi’an Jiaotong-Liverpool University Suzhou215412 China CSSC Seago System Technology Co. Ltd. Shanghai200010 China Science and Technology on Near-Surface Detection Laboratory Jangsu Wuxi214035 China Department of Geography Hong Kong Baptist University 999077 Hong Kong

ISBN: (纸本)9783031781858

In the field of intelligent recruitment, automated resume matching and non-contact interviews have significantly improved the efficiency of companies in finding suitable candidates. This corresponds to the techniques of person-job matching and AI interviews. However, current person-job matching methods lack substantial data support, while AI interview methods struggle to integrate deep information from multimodal data and provide comprehensive evaluations of candidates’ responses. To address these challenges, we propose a multimodal data-driven person-job evaluation model, comprising two key stages: a person-job matching method based on graph attention and a multimodal AI interview method. Using a dual-perspective graph neural network approach, we accomplish the screening of candidates and positions. In the second stage, we conduct a comprehensive evaluation of candidates’ interview performance based on text, audio, and image modalities, providing a more objective, consistent, and efficient interview assessment method. Experimental results demonstrate that our person-job matching method surpasses current popular techniques and effectively transfers features to the next stage. In our multimodal AI interview method, we achieve accurate scoring of candidate responses, assessment of intonation stress levels, and inference of their Big Five personality traits, comprehensively evaluating candidates from multiple perspectives. This confirms the superiority and efficiency of our approach. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

关键词： Graph neural networks

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Microstructural analysis and nonlinear optical properties of PP/PA6/Clay composites: a comparative study with and without compatibilizer

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Optical and Quantum Electronics 2025年第5期57卷 1-27页

作者： Orshesh, Z. Dehghani, Z. Moghaddasi, M. Bagheri, R. Abrinaei, F. Department of Materials Science and Engineering Ahvaz Branch Islamic Azad University Ahvaz Iran Department of Materials Science and Engineering Central Tehran Branch Islamic Azad University Tehran Iran Department of Physics University of Neyshabur P. O. Box *** Neyshabur Iran National Key Laboratory on Near-Surface Detection School of Optics and Photonics Beijing Institute of Technology Beijing100081 China Department of Materials Science and Engineering Sharif University of Technology P. O. Box 11365-9466 Tehran Iran Department of Physics Central Tehran Branch Islamic Azad University Tehran Iran Department of Physics East Tehran Branch Islamic Azad University Tehran Iran

Ternary polypropylene/polyamide6/organoclay composites were successfully synthesized through a melt-mixing process, with and without a compatibilizer. The chemical-bond, structural, and morphological characteristics of composites were thoroughly investigated utilizing Fourier-transform infrared spectroscopy, wide-angle X-ray diffraction, and scanning electron microscopy analyses. The morphological investigations showed that the addition of a compatibilizer to the composite leads to a reduction in the size of the dispersed PA6/clay domains and a decrease in the distance between them due to the formation of a PP-g-PA copolymer at the interface, which improves compatibility between the PP and PA6 phases. Furthermore, the differential scanning calorimetry technique was employed to assess the crystallization and thermal action of the composites. The results revealed that the addition of a compatibilizer resulted in a slight increase in the crystallization temperature of PP and a reduction in the overall crystallinity of the composite, attributed to the compatibilizer’s interaction with both the clay and PA6/clay islands, limiting PP chain mobility and hindering crystallization. The band gap energies were determined in a range of 4.17–4.34 eV by diffuse reflectance spectroscopy and utilizing the Tauc method. Notably, this study marks the first instance of exploring the nonlinear optical properties of these composites. This was achieved by employing Z-scan technique by subjecting the samples to a continuous-wave Nd:YAG laser functioning at a wavelength of 532 nm. A positive nonlinearity of the order of 10–8 cm2W−1 was observed across all samples studied. Particularly noteworthy was the significant enhancement in nonlinear refractive index and absorption coefficients for polypropylene/polyamide6/organoclay ternary composites upon the addition of the compatibilizer. These findings strongly indicate the potential of these composites for applications in nonlinear optical devic

关键词： Fourier transform infrared spectroscopy

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3D lidar scene projector (LSP) for the performance testing of large-array flash lidar systems for autonomous vehicles

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Optics and Laser technology 2025年 188卷

作者： Li, Renjie Gao, Yanze Pan, Hongcheng An, Tongtong Li, Zhuo Yuan, Xujin School of Optics and Photonics Beijing Institute of Technology Beijing100081 China Yangtze Delta Region Academy Beijing Institute of Technology Jiaxing314019 China National Key Laboratory on Near-surface Detection Beijing100072 China Institute of Advanced Structure Technology Beijing Institute of Technology Beijing100081 China

Flash lidars utilize array-type detectors to rapidly capture detailed 3D point clouds without scanning, making them crucial for automotive sensing. This paper presents a 3D lidar scene projector (LSP) designed to assess the performance of large-array flash lidar systems. The LSP improves the lidar testing efficiency: it reduces testing time from over 2 days to about 30 min (a 99 % acceleration) and reduces spatial footprint requirements from 500 m2 to 4 m2 (a 99 % reduction). Initially, using time-domain tomography, we break down the 3D point cloud of a lidar scene into 2D time slices. Subsequently, a spatial light modulator (SLM) is utilized to create optical patterns that represent these time slices. These patterns are then superimposed and imaged using integrated imaging to construct a 3D image. The LSP achieves a spatial resolution of 640 × 512 pixels, a distance simulation range of 0.5 ∼ 50 m, a distance simulation resolution of 15 mm, 12 depth levels, a depth of field (DOF) of 180 mm, a field of view (FOV) of 64°×53°, and a maximum frame rate of 10.6 kHz. Our 3D LSP eliminates reliance on manual adjustments reflectivity boards, and has been deployed as a terminal testing instrument on a lidar mass production line. The LSP's exceptional testing efficiency demonstrates its potential to advance intelligent vehicle technology. © 2025 Elsevier Ltd

关键词： Instrument testing

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End-to-end optimization for a wide-field-of-view metalens with an aperture stop

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Journal of the Optical Society of America B: Optical Physics 2025年第5期42.0卷 1146-1153页

作者： Ren, Ziming Zhang, Jia Moghaddasi, Mojtaba Xiong, Chenjie Huang, Jianzhou Meng, Bo Hu, Bin National Key Laboratory on Near-surface Detection Beijing 100072 China Beijing Engineering Research Center for Mixed Reality and Advanced Display School of Optics and Photonics Beijing Institute of Technology Beijing 100081 China China Academy of Aerospace Science and Innovation Beijing 100089 China State Key Laboratory of Luminescence Science and Technology Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun 130033 China

Metalenses have great application potential to realize ultra-compact wide-field-of-view (WFOV) optics for surveillance cameras, industrial vision, and medical imaging. Due to the relatively low fabrication requirement, metalenses with an aperture stop for WFOV have attracted much interest recently. However, most designs for this structure rely on commercial design software or exclude the optimization of the aperture size. This work proposes a design framework for a metalens with an aperture stop based on an end-to-end optimization for WFOV imaging, which achieves joint optimization of aperture diameter, substrate thickness, and metalens phase distribution. Using this framework, a metalens with an aperture that achieves a FOV of 160^◦ in the mid-infrared region is designed and demonstrated by both theoretical calculation and simulation. This work is expected to provide alternative design options for miniaturized WFOV imaging optical systems. © 2025 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.

关键词： Biomedical imaging Imaging systems Optical imaging Optical systems Phase modulation Systems design

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Bending-switchable terahertz metamaterial with a single layer based on laser-induced graphene

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Chinese Optics Letters 2025年第4期23卷 043603-043603页

作者： Jalal, Abdul Dong, Yan Deng, Bowen Qasim, Muhammad Moghaddasi, Mojtaba Qureshi, Ubaid Ur Rahman Wang, Zongyuan Wu, Xudong Xiong, Chenjie Hu, Bin National Key Laboratory on Near-surface Detection Beijing100072 China School of Optics and Photonics Beijing Institute of Technology Beijing100081 China

We propose a fast-printable and function-switchable metamaterial based on laser-induced graphene for terahertz (THz) wave modulation in the reflection mode. The design can modulate the linear polarization of the incoming wave fronts to its cross-polarization from 0.27 to 0.41 THz and linear polarization to circular polarization from 0.48 to 0.62 THz. The function of the device can also be switched from a polarization converter to an absorber by bending it with an angle of 57°. Experimental results showed a good agreement with those of the simulation. The proposed polarization converter may find its application in THz polarization control systems and sensing. © 2025 Chinese Optics Letters.

关键词： Wavefronts

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