International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT)最新文献_第3页

Super-resolution imaging lidar based on Fourier ptychography 基于傅立叶平面摄影的超分辨率成像激光雷达

International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT) Pub Date : 2021-12-13 DOI: 10.1117/12.2604172

Yuming Wang, Hui Zhao, Mingyang Yang, Youshan Qu, XueWu Fan

{"title":"Super-resolution imaging lidar based on Fourier ptychography","authors":"Yuming Wang, Hui Zhao, Mingyang Yang, Youshan Qu, XueWu Fan","doi":"10.1117/12.2604172","DOIUrl":"https://doi.org/10.1117/12.2604172","url":null,"abstract":"Traditional imaging lidar exhibits an obvious trade-off between the resolution and the size of its optical system. In order to realize a miniaturized super-resolution (SR) imaging lidar, Fourier ptychography (FP) has been introduced to break through the diffraction limit of the camera lens. FP, derived from synthetic aperture method, is capable of acquiring high resolution and large field-of-view reconstructed images without increasing the aperture size by capturing multiple images with diverse incident angles before computationally combining with phase retrieval algorithm. In this work, a SR imaging lidar system was proposed by using reflective-type FP, which mainly consists of a s-CMOS camera, a Nd:YAG laser, and a 2-D translation stage so as to achieve aperture scanning on the x and y axes. To validate this technique experimentally, a set of images of a positive USAF chrome-on-glass target were obtained for quantitative analysis, and an uneven 1 yuan nickel-on-steel RMB coin was used to simulate the applicability of the SR imaging lidar in practical applications. The observations show that the obtained images based on FP technique have an obvious improvement in resolution, contrast, and clarity. It is worth mentioning that the resolution of these reconstructed images is increased over 3 times in the experiment on the USAF target. Moreover, the images under different apertures were collected, processed and analyzed, which suggest the initial image quality has a non-negligible influence on the reconstructed results. This technique not only improves the performance of the imaging lidar while maintaining low costs, but also bring new vitality in remote image recognition and analysis.","PeriodicalId":236529,"journal":{"name":"International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127683973","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

Optimized thermal design of heat-stop of large ground-based solar telescope CLST 大型地基太阳望远镜CLST热阻优化热设计

International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT) Pub Date : 2021-12-13 DOI: 10.1117/12.2626171

Yangyi Liu, N. Gu, Cheng Li, Lianhui Zheng, C. Rao

引用次数: 0

Design and optimization of 1.2-m primary mirror supporting systems 1.2 m主镜支撑系统的设计与优化

International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT) Pub Date : 2021-12-13 DOI: 10.1117/12.2604579

Kewei Chen, Dan Jia, Zhongliang Ying, Zhige Zhang, Nian Pan, Jinlong Huang, Kunpeng Wang, L. Xue

引用次数: 1

Ultra-precision grinding and accuracy measurement of the hard-brittle thin-walled tubular optics 硬脆薄壁光学管的超精密磨削及精度测量

International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT) Pub Date : 2021-12-13 DOI: 10.1117/12.2604310

Han Yin, Sheng Wang, Qingliang Zhao, B. Guo, Jianbo Zhao

引用次数: 0

A scheme for trace gas detection using infrared optical feedback cavity enhanced spectroscopy 一种利用红外光反馈腔增强光谱法检测微量气体的方案

International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT) Pub Date : 2021-12-13 DOI: 10.1117/12.2605380

Shiyu Guan, Huilin Cao, Yucheng Ouyang, Z. Tan

引用次数: 0

Researching on the factors influencing the critical undeformed chip thickness of single crystal germanium 单晶锗临界不变形片厚的影响因素研究

International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT) Pub Date : 2021-12-13 DOI: 10.1117/12.2604765

Sha Ma, H. Yang, Qian Chen, Haibo Yang

{"title":"Researching on the factors influencing the critical undeformed chip thickness of single crystal germanium","authors":"Sha Ma, H. Yang, Qian Chen, Haibo Yang","doi":"10.1117/12.2604765","DOIUrl":"https://doi.org/10.1117/12.2604765","url":null,"abstract":"Cutting in ductile mode is a prerequisite for mirror machining of single crystal brittle materials. Under the condition that the cutting thickness is less than the critical undeformed chip thickness, the single crystal brittle material is removed in ductile mode. The critical undeformed chip thickness of single crystal brittle materials is not an intrinsic parameter, but a variable related to stress conditions, crystal orientation and other factors. In this paper, aiming at the critical undeformed chip thickness of single crystal germanium, the influence of the changes of crystal orientation, tool rake angle and linear velocity on the critical undeformed chip thickness of single crystal germanium is investigated by means of constant linear velocity single point diamond turning. The experimental results show that critical undeformed chip thickness of single crystal germanium varies in different crystal orientations. Large tool negative rake angle can increase the critical undeformed chip thickness of single crystal germanium. Increasing the linear velocity within a certain range can increase the critical undeformed chip thickness of single crystal germanium, however, excessive linear velocity will worsen the cutting state and reduce the critical undeformed chip thickness. This study provides some references for ductile mode cutting of single crystal germanium and other brittle materials.","PeriodicalId":236529,"journal":{"name":"International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116152965","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

Thermal deformation suppression method for chalcogenide glass based on deep cryogenic treatment 基于深冷处理的硫系玻璃热变形抑制方法

International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT) Pub Date : 2021-12-13 DOI: 10.1117/12.2604071

Hao Zhang, Ji-Hyeong An, Weihao Li, Xiao-dong Zhang

引用次数: 0

Simulation and application of spherical tool influence function for magnetorheological finishing 磁流变精加工球形刀具影响函数的仿真与应用

International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT) Pub Date : 2021-12-13 DOI: 10.1117/12.2603930

Hong-xiang Wang, Shiwei Liu, Qing-hua Zhang, Jing Hou, Xianhua Chen

{"title":"Simulation and application of spherical tool influence function for magnetorheological finishing","authors":"Hong-xiang Wang, Shiwei Liu, Qing-hua Zhang, Jing Hou, Xianhua Chen","doi":"10.1117/12.2603930","DOIUrl":"https://doi.org/10.1117/12.2603930","url":null,"abstract":"Magnetorheological finishing (MRF) has been widely used in the field of modern optical machining due to the high certainty of processing. In the processing of spherical components, the detection means and sample preparation limit the acquisition of magnetorheological spherical tool influence function. In order to realize the high precision manufacturing of spherical components, the spherical removal function in the magneto-rheological polishing process is simulated and applied in practice. Based on the Preston equation, the material removal of the planar component was analyzed and the plane tool influence function model was established. On this basis, the correlation between spherical removal and plane removal was analyzed, and a simplified spherical tool influence function simulation method was proposed, and its accuracy was verified by experiments. Aiming at the processing of spherical components, the processing technology was improved and the actual processing was carried out. After processing, the PV value of the transmitted wavefront was 0.09λ, and the RMS value was 3.2 nm. The experimental results show that the spherical tool influence function simulated in this paper can be applied in actual processing and obtain a high-quality optical surface.","PeriodicalId":236529,"journal":{"name":"International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122184944","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

Surface impedance absorbing boundary condition used for the simulation of frequency selective surfaces 用于频率选择曲面模拟的表面阻抗吸收边界条件

International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT) Pub Date : 2021-12-13 DOI: 10.1117/12.2604722

Weibo Liang, Hongxing Zheng

引用次数: 0

Suppressed J-V hysteresis in highly efficient inverted perovskite solar cells using small-molecule non-fullerene acceptor 利用小分子非富勒烯受体抑制高效倒置钙钛矿太阳能电池的J-V滞后

International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT) Pub Date : 2021-12-13 DOI: 10.1117/12.2603928

Mengge Wu, Pu Fan, S. Hou, Junsheng Yu

{"title":"Suppressed J-V hysteresis in highly efficient inverted perovskite solar cells using small-molecule non-fullerene acceptor","authors":"Mengge Wu, Pu Fan, S. Hou, Junsheng Yu","doi":"10.1117/12.2603928","DOIUrl":"https://doi.org/10.1117/12.2603928","url":null,"abstract":"Perovskite has attracted enormous research interest due to the unique advantages, such as high absorption coefficient, great carrier mobility, low exciton binding energy, etc., providing desirable applications in high-performance perovskite solar cells (PSCs). However, the current density-voltage (J-V) hysteresis phenomenon in PSC will reduce the testing accuracy and weaken the actual device performance. In this paper, a facile method based on interfacial engineering is proposed to suppress the hysteresis phenomenon and the deeper physicochemical mechanism is systematically analyzed. By incorporating non-fullerene acceptor Y6 in the crystallization process, a denser and continuous perovskite film with a low-density defect state is obtained, which affords PSC dramatically suppressed the J-V hysteresis with the hysteresis difference decreasing from 13.6% to 1.9% at the maximum power point. Furthermore, scanning electron microscope results and energy dispersive spectrum mappings suggest that ultrathin Y6 film is deposited between the perovskite film and the hydrophobic electron transport layer of PC61BM. The improvement of wettability and matching energy level caused by Y6, render the photocurrent increase and the power conversion efficiency of PSC@Y6 high up to 17.5%. Thus, this work demonstrates that interfacial engineering using small-molecule non-fullerene acceptor is a promising strategy to suppress the J-V hysteresis limiting further PSC commercialization.","PeriodicalId":236529,"journal":{"name":"International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131492893","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