International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference最新文献_第4页

Standard mirror mounting deformation analysis of large diameter optical interference measurement system 大直径光学干涉测量系统的标准反射镜安装变形分析

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2587321

F. Dang, Xueliang Zhu

{"title":"Standard mirror mounting deformation analysis of large diameter optical interference measurement system","authors":"F. Dang, Xueliang Zhu","doi":"10.1117/12.2587321","DOIUrl":"https://doi.org/10.1117/12.2587321","url":null,"abstract":"The finite element analysis method is mainly used to analyze the displacement and deformation of the lens under the action of gravity. The lens with a diameter of 320 mm and a thickness of 80 mm is used for simulation analysis. The simulation was carried out using the ring-belt support, the groove support, and the T-bracing, and the final deformation data was simulated and compared. The amount of deformation of the ring-shaped structural support was the deformation of the support of the groove structure, and the T-shaped support structure. Deformation. In addition, simulations were performed on various sizes of various support structures. It was found that the effect of changes in dimensions and structure on the final deformation was significant. By changing the diameter and thickness of the lens, the changing trend of the deformation of the lens under different thicknesses and diameters is obtained. The analytical method was used to calculate the deformation and compared with the numerical simulation method. The simulation structure was similar to the analytical results, and the accuracy of the simulation results was verified. In the end, we obtained the minimum deformation of the belt support, and simulate the three-dimensional deformation of the bottom surface. According to the requirements in the actual project, we designed the most appropriate clamping method for the interferometer.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"215 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122822335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

An openCL-based speckle matching on the monocular 3D sensor using speckle projection 基于opencl的单目3D传感器的散斑匹配

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2587482

Wei Yin, C. Zuo, Shijie Feng, Tianyang Tao, Qian Chen

{"title":"An openCL-based speckle matching on the monocular 3D sensor using speckle projection","authors":"Wei Yin, C. Zuo, Shijie Feng, Tianyang Tao, Qian Chen","doi":"10.1117/12.2587482","DOIUrl":"https://doi.org/10.1117/12.2587482","url":null,"abstract":"Single-shot speckle projection profilometry (SPP), which can build the global correspondences between stereo images by projecting a single random speckle pattern, is applicable to the dynamic 3D acquisition. However, the traditional stereo matching algorithm used in SPP has low matching accuracy and high computational cost, which makes it difficult to achieve real-time and accurate 3D reconstruction dynamically. For enhancing the performance of 3D sensing of single-shot speckle projection profilometry (SPP), in this paper, we proposed an OpenCL-based speckle matching on the monocular 3D sensor using speckle projection. In terms of hardware, our low-cost monocular 3D sensor using speckle projection only consists of one IR camera and a diffractive optical element (DOE) projector. On the other hand, an improved semi-global matching (SGM) algorithm using OpenCL acceleration was proposed to obtain efficient, dense, and accurate matching results, enabling high-quality 3D reconstruction dynamically. Since the baseline between the IR camera and the DOE projector is about 35mm, the absolute disparity range of our system is suitably set to 64 pixels to measure scenes with a depth range of 0:3m to 3m. The experiment results demonstrated that the proposed speckle matching method based on our low-cost 3D sensor can achieve fast and absolute 3D shape measurement with the millimeter accuracy through a single speckle pattern.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129073028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Ptychographic attack on the double random amplitude-phase optical encoding system 双随机幅相光学编码系统的平面攻击

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586730

Qian Wang, Tuo Li

引用次数: 0

Generation mechanism and suppression technique of laser scatter bright stripe on mirror surface 镜面激光散射亮条纹的产生机理及抑制技术

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586060

Zhang Jinkuan, Teng Lin

引用次数: 0

Research on optimization technology of high precision milling equipment for planar optical elements 平面光学元件高精度铣削设备优化技术研究

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586846

Jinfeng Bai, Huiying Zhao, Shenggen Zhu, Lingyu Zhao, Mingchen Cao, D. Ma, Yuxuan Cao, Jianjun Chen

{"title":"Research on optimization technology of high precision milling equipment for planar optical elements","authors":"Jinfeng Bai, Huiying Zhao, Shenggen Zhu, Lingyu Zhao, Mingchen Cao, D. Ma, Yuxuan Cao, Jianjun Chen","doi":"10.1117/12.2586846","DOIUrl":"https://doi.org/10.1117/12.2586846","url":null,"abstract":"Under the background of high precision machining requirements for planar optical elements, the overall structure design of four-axis special milling equipment was made, and the basic materials of equipment components were set. The precision distribution of the moving parts of the equipment is carried out for the traction of the plane optical element with high precision and high efficiency machining, so the equipment model is designed. The static simulation analysis was carried out in the two limit states of the equipment model, the basic design model and the optimal design model were compared. In the intermediate processing state, the deformation of the processing point and the driving part of the basic design model was optimized from 0.298 micron and 0.20 micron to 0.172 micron and 0.155 micron of the optimal design model respectively. The deformation of the processing point and the transmission part of the basic design model was optimized from 0.301 micron and 0.197 micron to 0.197 micron and 0.201 micron of the optimal design model, respectively.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115971812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Monte Carlo simulation of laser illumination system using return photon counts 使用返回光子计数的激光照明系统蒙特卡罗模拟

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2587239

Lanlan Li, Lei Zhou

引用次数: 1

Super-resolution lensless microscopy using multi-wavelength multiplexing 使用多波长复用的超分辨率无透镜显微镜

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586569

Xuejuan Wu, Jialin Zhang, Jiasong Sun, Linpeng Lu, Qian Chen, C. Zuo

引用次数: 0

Research on Ion beam polishing efficiency with changing different beam diameters 改变光束直径对离子束抛光效率的影响研究

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2585251

Guobin Sun, Shilei Jiang, Jin Zhang

{"title":"Research on Ion beam polishing efficiency with changing different beam diameters","authors":"Guobin Sun, Shilei Jiang, Jin Zhang","doi":"10.1117/12.2585251","DOIUrl":"https://doi.org/10.1117/12.2585251","url":null,"abstract":"In order to improve the ability of ion beam polishing efficiency and shape modification. In order to solve the problem of low polishing convergence ratio in particular, we use different beam diameters and peak removal rates of removal functions to simulate polishing process and efficiency. MATLAB tool was used to accurately fit the removal functions, and a mathematical model of ion beam simulation polishing was established to simulate the removal characteristics of ion beams with different beam diameters under different superposition spacing. A series of simulation results with different residence time distribution and residual precision were obtained by optimizing the polishing simulation algorithm, and the simulation rules were analyzed to select the most appropriate aperture and overlay spacing. Polishing simulation analysis can not only optimize residence time distribution, but also reduce machining time. It can also optimize the processing technology to achieve pre-processing prediction and achieve higher polishing efficiency while achieving the target accuracy requirements. On the basis of simulation, we polished φ120mm fused quartz flat samples with initial surface shape PV of 1079.59nm and RMS of 304.95nm. After 11 hours of polishing, the shape accuracy PV were 95.63nm, the RMS is 8.99nm, and the mean square value convergence ratio of the surface shape reaches 33.92.This simulation approach provides a effective guidance for ion beam high precision and efficiency polishing.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115030012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Polarization measurement of 2.1μm high power GaSb-based lasers 2.1μm高功率gasb激光器的偏振测量

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586283

Tian-fang Wang, Chengao Yang, Yi Zhang, Jin-ming Shang, Yi-hang Chen, Shengwen Xie, Sen-sen Li, Yu Zhang, Ying-qiang Xu, H. Ni, Z. Niu

引用次数: 0

Laser beam stability control based on differential compensation system 基于微分补偿系统的激光束稳定性控制

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586755

Hongwei Yang, Lidong Lu

引用次数: 1