Prof. Peter de Groot is fascinated by optics and its practical use for measuring things. Educated first in History then in experimental atomic Physics at the Universities of Grenoble, Maine, and Connecticut, he enjoys discovering the hidden links between academic and applied research that fuel inventions and creative solutions in science and industry.

Dr. de Groot joined Zygo in 1992, and has been Executive Director of Research, Chief Scientist, and now Scientist Emeritus. His work has led to 141 US patents for optical instruments and 225 technical papers and book chapters. He is a Fellow of numerous international professional societies, and is the 2024 President Elect of SPIE, the international society for optics and photonics.

An experienced educator, Dr. de Groot has taught secondary school science as well as advanced topics at universities, and professional development courses worldwide, as an instructor, adjunct professor, and honorary professor.

Abstract: The story of coherence scanning interferometry (CSI) is a journey through the history of optics, beginning with the discovery of interference fringes and leading up to present-day methods of surface structure analysis. For a time, after the invention of the laser, the principles of low-coherence interferometry were forgotten, as researchers raced to develop laser-based distance sensors. The rediscovery of white light methods thirty years ago dramatically advanced applications for high precision measurements using light waves, leading to modern CSI microscopy.

In this lecture, I trace the history of interferometry with incoherent light sources from Newton’s colored bands to the current state of the art in optical metrology. We will see how the fundamentals of coherence and fringe formation enable manufacturing metrology for everything from engine parts to virtual reality headsets. Current topics include both practical instrument design as well as scattering theory applied to the interaction of light with surfaces.

Dr F. Gao is a Reader at the School of Computing and Engineering, University of Huddersfield, UK. His research interests focus on the study of optical interferometry, 3D fringe projection for surface measurement, metasurfaces and their applications. He studied precision measurement and instrumentation as an undergraduate and postgraduate student at Tianjin University. He was awarded a Ph.D. degree at Coventry University, UK. His research experience includes research and development of dimensional metrology instruments and measurement standards at the National Institute of Metrology of China and PTB, Germany, as well as research in the fields of surface metrology and surface strain measurement at Loughborough University, UK.

Abstract: A portable hybrid structured-light based measurement system is presented for in-situ and embedded form metrology of structured composite surfaces. The proposed technique contains three subsystems: phase measuring deflectometry (PMD) subsystem, fringe projection profilometry (FPP) subsystem, and stereo vision subsystem. PMD subsystem accurately reconstructs the form data of specular surfaces based on the principle of structured-light reflection, while FPP subsystem measures rough surfaces by projecting structured light on the measured surfaces. Then the output data from the subsystems are stitched to reconstruct a complete form of the measured composite surfaces. An embedded measurement experiment in a diamond turning machine demonstrates that the proposed techniques can achieve 24.8 µm form accuracy in rough surface measurement and 400 nm form accuracy in specular surface measurement.

Qiong-Hua Wang is a professor of optics at Beihang University. She was a professor at Sichuan University from 2004 to 2018. She was a post-doctoral research fellow at School of Optics/CREOL at the University of Central Florida from 2001 to 2004. She was a faculty at the University of Electronic Science and Technology of China (UESTC) from 1995 to 2001. She received B. S., M. S. and Ph. D. degrees from UESTC in 1992, 1995 and 2001, respectively. She published more than 350 papers in peer-review journals and authored 3 books. She holds more than 160 US and Chinese patents. She is a Fellow of SID, OPTICA, SPIE and COS. Her research interests include display and imaging technologies.

Abstract: Integral imaging 3D display is one import 3D display technology. In order to improve the performance of the integral imaging 3D display, we proposed and developed a large-viewing angle tabletop integral imaging 3D display and a high-resolution integral imaging 3D display. The structure, principle and performance of the integral imaging 3D displays will be introduced in detail in the talk.

Liheng Bian is a Professor with Beijing Institute of Technology. His research interests include computational imaging and sensing. He has published a monograph of Computational Imaging and Sensing, and over 60 peer-reviewed papers on Nature Communications, Light: Science & Applications, eLight, CVPR, and etc. He has also been granted more than 40 patents. He has been elected to the Outstanding Youth Project of the National Natural Science Foundation of China. He has been awarded the first prize of the Chinese Institute of Electronics, first prize of the Ministry of Public Security of the People's Republic of China, the first prize in the National Finals of the Third "Yuanchuang Cup" Innovation and Creativity Competition, and the Best Paper Award of SPIE Photonics West Conference. He has served as the guest editor of "Light: Science & Applications" and "Light: Advanced Manufacturing", and joined the young editorial board of "Space: Science & Technology" and "Signal Processing".

Abstract: Hyperspectral imaging provides high-dimensional spatial-temporal-spectral information revealing intrinsic matter characteristics. Here we report an on-chip computational hyperspectral imaging framework with high spatial and temporal resolution. By integrating different broadband modulation materials on the imaging sensor chip, the target spectral information is non-uniformly and intrinsically coupled on each pixel with high light throughput. Using intelligent reconstruction algorithms, multi-channel images can be recovered from each frame, realizing real-time hyperspectral imaging. Following such a framework, we for the first time fabricated a broadband (400-1700 nm) hyperspectral imaging sensor using photolithography, with an average light throughput of 74.8% and 96 wavelength channels. The demonstrated resolution is 1024×1024 pixels at 124 fps. We demonstrated its wide applications including chlorophyll and sugar quantification for intelligent agriculture, blood oxygen and water quality monitoring for human health, textile classification and apple bruise detection for industrial automation, and remote lunar detection for astronomy. The integrated hyperspectral imaging sensor weighs only tens of grams, and can be assembled on various resource-limited platforms or equipped with off-the-shelf optical systems. The technique transforms the challenge of high-dimensional imaging from a high-cost manufacturing and cumbersome system to one that is solvable through on-chip compression and agile computation.

Prof. Hong Minghui is the Tan Kah Kee Chair Professor, Xiamen University, China. He is also the Engineering Technology Division Chairman and Dean of Pen-Tung Sah Institute of Micro-Nano Science and Technology of Xiamen University. Prof. Hong specializes in laser microprocessing & nanofabrication. He has co-authored 15 book chapters, 42 patents granted, and ~600 scientific papers and 100+ plenary/keynote/invited talks in international conferences. He is a member of organizing committees for Laser Precision Micromachining International Conference (2001~2024), International Symposium of Functional Materials (2005, 2007 and 2014), Chair of International Workshop of Plasmonics and Applications in Nanotechnologies (2006), Chair of Conference on Laser Ablation (2009) and Chair of Asia-Pacific Near-field Optics Conference (2013 and 2019). Prof. Hong is invited to serve as an Editor of Light: Science and Applications, Engineering, Science China G, Laser Micro/nanoengineering, and Executive Editor-in-chief of Opto-Electronic Advances and Opto-Electronic Science. Prof. Hong is Fellow of Academy of Engineering, Singapore (FSEng), Fellow of Optical Society of America (OPTICA), Fellow of International Society for Optics and Photonics (SPIE), Fellow of International Academy of Photonics and Laser Engineering (IAPLE) and Fellow of Institution of Engineers, Singapore (IES). As an active tech entrepreneur, he is also the leading founder of Phaos Technology Pte. Ltd., Opto Science Pte. Ltd. and Xiamen Light Technology Integration Pte. Ltd.

Abstract: Microsphere optical nanoscope, as a competitive nano-imaging technique, has extensive applications in the semiconductor industry and biology due to its real-time imaging ability, label-free characteristics, and good compatibility with conventional microscopes. After years of rapid development, the microsphere optical nanoscope still faces restrictions on imaging resolution, contrast, magnification, and field-of-view. To further promote the imaging performance of the microsphere optical nanoscope, two new technical modification routes are developed. At single component level, engineered microspheres with enhanced nano-imaging ability, such as hyper-hemi-microsphere and bilayer-film-decorated microsphere, are put forward and realized through diverse nanofabrication techniques. At device level, substituting single microsphere with microsphere compound lens can improve imaging performance in multiple aspects, such as customized magnification and large field-of-view. Effectiveness of these modifications has been proved in semiconductor chip inspection and microfluidic dynamic nano-imaging. Furthermore, these technical advances pave way for a miniaturized all-microspheres nanoscope with an ultra-compact system configuration, which makes low-cost and portable optical nanoscopes feasible.

Dr. Yu Fu received his bachelor's degree in Mechanical Engineering from   Shanghai Jiao Tong University and his master's and doctoral degrees in   Mechanical Engineering from the National University of Singapore.

In 1997, Dr. Fu joined the Department of Mechanical Engineering at the National University of Singapore as a Professional Officer, pursuing research on optical measurement and image processing techniques. He has published more than 100 papers in leading international journals and conference proceedings. In 2006, he was awarded the prestigious Alexander von Humboldt research fellowship and worked with the renowned Institute of Technical Optics (ITO), the University of Stuttgart, on optical dynamic measurement. He joined Temasek Laboratories at Nanyang Technological University in 2009. In July 2011, Dr. Fu received the prestigious Temasek Fellowship from Singapore's Ministry of Defence and Nanyang Technological University to serve as a Principal Investigator in Temasek Laboratories. In 2018, he joined Shenzhen University as a Professor in the College of Physics and Optoelectronic Engineering. Currently, Dr. Fu's research focuses on optical dynamic measurement and structural health diagnostics. Dr. Fu is also a Fellow member of SPIE.

Abstract: Vibration measurement, particularly the measurement of mode shapes, is crucial for structural dynamic analysis and defect localization because it helps validate finite element or analytical vibration models. Laser Doppler Vibrometry (LDV) and high-speed Digital Image Correlation (DIC) are the leading methods for experimental mode shape measurement. Unfortunately, the resolution of DIC is insufficient for detecting vibrations in normal structures. Similarly, the spatial sampling provided by LDV is limited. We have proposed a new full-field vibration measurement method that utilizes LDV-enhanced imaging technology with standard-rate cameras. This imaging technique could involve DIC or fringe/speckle projection. Our experiments demonstrate that the LDV spectrum can guide the removal of camera noise and significantly enhance the resolution of vibration measurements using imaging technology. The results of data fusion indicate that this method can effectively localize defects in various structures through vibration measurement.

肖振中博士，教授级高工，奥比中光联合创始人，于西安交通大学获得学士、硕士及博士学位，2010年前往新加坡南洋理工大学进行博士后研究，之后被聘为西安交通大学机械工程学院博士讲师，主要从事机器视觉与三维传感技术研究。2013年起联创奥比中光并担任首席技术官至今，致力于基于散斑点、条纹投影的结构光、主被动双目视觉以及其他多种主流光学测量技术的研究和产业化落地，参与国家级、省级及市级等科研项目10余项，累计申请专利328件，授权专利129件。

Abstract: 与光学测量结缘已有二十载，读硕读博留校而后又离校创业，学术上有幸结识三五好友，创业之路让人成长更多。多年来一直没变的就是持续学习，追光而行。

Liangcai Cao received his BS/MS and PhD degrees from Harbin Institute of Technology and Tsinghua University, in 1999/2001 and 2005, respectively. Then he became an assistant professor at the Department of Precision Instruments, Tsinghua University. He is now tenured professor and director of the Institute of Opto-electronic Engineering, Tsinghua University. He was a visiting scholar at UC Santa Cruz and MIT in 2009 and 2014, respectively. His research interests are holographic imaging and holographic display. He is a Fellow of the Optica and the SPIE.

Abstract: Reference-free holographic imaging techniques have been long pursued because they obviate the high experimental requirements of conventional interferometric methods, but they are faced with an inherent trade-off between phase imaging fidelity and temporal resolution. Here, we propose a general algorithmic framework, termed spatiotemporally regularized inversion (STRIVER), for motion-resolved holographic reconstruction by exploiting spatiotemporal priors. Specifically, total variation with respect to the complex spatio-temporal datacube is introduced as a sparsity-promoting regularizer.

We experimentally demonstrate the use of spatiotemporal sparsity and implicit priors to obtain time-resolved holographic video of living organisms at a framerate-limited speed of over 100 Hz. STRIVER can also be potentially extended to other measurement schemes, spectral regimes, and imaging modalities, pushing the temporal resolution of computational imaging toward higher limits.

报名截止日期：

2024年6月7日24:00(UTC+8)前

注册截止日期：

2024年6月20日24:00(UTC+8)前

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