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

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

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

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

Interference pattern with an analytical solution in modified Shack-Hartmann sensor 改进Shack-Hartmann传感器干涉图样的解析解

International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT) Pub Date : 2021-12-13 DOI: 10.1117/12.2603971

Xiaoyang Li, Xu Yang, Bincheng Li, Shengqian Wang, H. Xian

{"title":"Interference pattern with an analytical solution in modified Shack-Hartmann sensor","authors":"Xiaoyang Li, Xu Yang, Bincheng Li, Shengqian Wang, H. Xian","doi":"10.1117/12.2603971","DOIUrl":"https://doi.org/10.1117/12.2603971","url":null,"abstract":"Segmented telescope is an effective way to realize high-resolution observations in astronomy. An important work for high-resolution observations using segmented telescopes is phasing the segmented primary mirror. Modified Shack-Hartmann sensor. Is proposed for piston error detection. The interference pattern created by a circular lens placed across two adjacent mirrors in exit pupil plane is used as the signal of the modified Shack-Hartmann sensor. Piston errors need to be extracted from the interference pattern. The offset of lens and gap error of adjacent mirrors causes the distortion of interference pattern, and leads to a reduction in the detection accuracy of existing piston error extraction techniques. In this paper, we propose to replace the circular lens with a square lens and the mathematical model of the corresponding interference pattern is modeled by Fourier optics, including the one-dimensional and two-dimensional analytical solution of the interference pattern. The simulation results show that the proposed analytical solution can effectively characterize the interference pattern in the ideal situation and in the presence of lateral offset of the lens and the gap error of the adjacent mirrors situation. The results presented here give a deeper insight into the interference pattern of modified Shack-Hartmann sensor, and are of great help for developing new piston error detection techniques based on modified Shack-Hartmann sensor.","PeriodicalId":236529,"journal":{"name":"International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT)","volume":"13 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":"133845246","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

Interested region selection and super-resolution reconstruction of depth image for scanning lidar 扫描激光雷达感兴趣区域选择与深度图像超分辨率重建

International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT) Pub Date : 2021-12-13 DOI: 10.1117/12.2603943

Ao Yang, Jie Cao, Zhijun Li, Yang Cheng, Q. Hao

{"title":"Interested region selection and super-resolution reconstruction of depth image for scanning lidar","authors":"Ao Yang, Jie Cao, Zhijun Li, Yang Cheng, Q. Hao","doi":"10.1117/12.2603943","DOIUrl":"https://doi.org/10.1117/12.2603943","url":null,"abstract":"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 of the target surface. By using fixed size of scanning spot, the resolution of reconstructed depth image is consistent with the number of scanning points. Therefore, traditional scanning lidar is hardly to achieve high resolution and scanning efficiency simultaneously. Aimed to address this issue, we propose a method of interested region selection and depth image super-resolution reconstruction. By constructing a simulation target region with 10 m × 10 m, the proposed method is used to scan this region. The position of the interested region is obtained by scanning the full field of view (FOV) with a large spot. Then the interested region with 4 m × 8 m is fine scanned with reduced scanning spot. By using the super-resolution reconstruction method of depth image, the resolution of the depth image obtained by fine scanning with 40 × 80 points is increased by two times. And the depth image of the interested region with 80 × 160 pixels is obtained. The simulation result shows that the lidar based on this method can give consideration to both high scanning efficiency and the resolution of reconstructed depth image.","PeriodicalId":236529,"journal":{"name":"International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT)","volume":"104 13","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132477440","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

Design of the active cooling focal plane component for the space astronomy telescope 空间天文望远镜主动冷却焦平面元件的设计

International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT) Pub Date : 2021-12-13 DOI: 10.1117/12.2605265

Liang-jie Feng, Chenjie Wang, Gangyi Zou

{"title":"Design of the active cooling focal plane component for the space astronomy telescope","authors":"Liang-jie Feng, Chenjie Wang, Gangyi Zou","doi":"10.1117/12.2605265","DOIUrl":"https://doi.org/10.1117/12.2605265","url":null,"abstract":"The detecting CCD of a space astronomical telescope needs to be cooled to -75℃ to suppress the dark current for faint target detecting in the universe, and coplanarly spliced with two fine guidance sensor(FGS) which needs to be cooled to -40°C for the stability as long time observation. Two one stage thermos-electric cooler(TEC) was connected to actively cool the detector to ensure the working temperature and the temperature control accuracy, the Structural of the actively cooling detector assembly and the focal plane component were presented and the power dissipation of the TEC was calculated. In order to ensure the coplanarity of the focal plane component on the working temperature, the finite element method was used to analyze the thermal distribution on the detector surface and the thermal deformation of the supporting structure of the FGS with different materials. The analysis results showed that the lowest cooling temperature of the detecting CCD is -75°C, the temperature control accuracy was better than 1°C, and the coplanar error of the detection CCD and the fine guidance sensors did not exceed 20μm. The thermal equilibrium test showed that the lowest cooling temperature was -74.9°C~-75.1°C for the detecting CCD, The temperature control accuracy was 0.1°C. The thermal optical test showed that the defocus of the FGS was 4μm after focusing, which verified the thermal and structural design performance of the focal plane component.","PeriodicalId":236529,"journal":{"name":"International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT)","volume":"5 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":"132733484","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

Suppressing the edge roll off in continuous polishing of large planar optics by using extension blocks 利用延伸块抑制大型平面光学连续抛光中的边滚

International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT) Pub Date : 2021-12-13 DOI: 10.1117/12.2604437

Lele Ren, Fei-hu Zhang, D. Liao, R. Xie, Shi-jie Zhao, Jian Wang

引用次数: 0