International Conference on Precision Instruments and Optical Engineering最新文献

Performance evaluation and quantitative study of the hyperspectral lidar prototype for offshore oil pollution monitoring 海洋石油污染监测高光谱激光雷达样机性能评价与定量研究

International Conference on Precision Instruments and Optical Engineering Pub Date : 2023-02-27 DOI: 10.1117/12.2667776

Jing Li, Shu Li, Y. Zhai, Shuang Luan, Zhao-xi Wang, Yan Tang, Meishan Jin

{"title":"Performance evaluation and quantitative study of the hyperspectral lidar prototype for offshore oil pollution monitoring","authors":"Jing Li, Shu Li, Y. Zhai, Shuang Luan, Zhao-xi Wang, Yan Tang, Meishan Jin","doi":"10.1117/12.2667776","DOIUrl":"https://doi.org/10.1117/12.2667776","url":null,"abstract":"The high spectral lidar principled sample machine that can obtain the target spectral information as well as the twodimensional images was developed from the perspective of motoring the marine oil spill pollution in this thesis, this high spectral lidar principled sample machine can cover the wavelength range from 400nm to 1100nm. And this high spectral lidar principled sample machine was applied for the remote sensing detection of vegetation, oceans, minerals and some other ground object targets, through measuring the spectral radiance of the hyperspectral laser interacting with the target and returning to the lidar receiving system, so as to realize the real-time monitoring of vegetation, oceans and minerals. For the purpose of realizing the quantitative observation, an accurate radiometric calibration on high spectral lidar was required. The radiometric calibration of high spectral lidar was aimed at its receiving system, that was to determine the responsivity of the principled sample machine to the target spectral radiance. After finishing debugging, all the indicators of the principled sample machine can meet the application requirements, which provided a new monitoring means for the marine oil spill in our country and was of great significance for the future protection of marine environment and the application and exploitation of marine resources.","PeriodicalId":227067,"journal":{"name":"International Conference on Precision Instruments and Optical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127540008","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

A study on achromatic metalens in the visible range 可见光范围内消色差超透镜的研究

International Conference on Precision Instruments and Optical Engineering Pub Date : 2023-02-27 DOI: 10.1117/12.2667845

Yan He

引用次数: 0

Study on the curve error of acoustic transmission path in anechoic chamber 消声室声传输路径曲线误差的研究

International Conference on Precision Instruments and Optical Engineering Pub Date : 2023-02-27 DOI: 10.1117/12.2667781

C. Gu, Z. Meng, Jin Li

引用次数: 0

Research on cadastral survey method based on 3D reality model and laser point cloud data 基于三维现实模型和激光点云数据的地籍测量方法研究

International Conference on Precision Instruments and Optical Engineering Pub Date : 2023-02-27 DOI: 10.1117/12.2668120

Yuping Yan, Xu Yao, Yu Qiu

引用次数: 1

Design and simulation test of DFB laser temperature control system DFB激光温度控制系统的设计与仿真试验

International Conference on Precision Instruments and Optical Engineering Pub Date : 2023-02-27 DOI: 10.1117/12.2668056

Qing-hua Guo

引用次数: 0

Vector light field 3D display with multi-directional backlight 具有多向背光的矢量光场三维显示

International Conference on Precision Instruments and Optical Engineering Pub Date : 2023-02-27 DOI: 10.1117/12.2667923

Yang Li, Wen Qiao

引用次数: 0

Effect of the salt mist testing on imaging resolution of the optical imaging system 盐雾测试对光学成像系统成像分辨率的影响

International Conference on Precision Instruments and Optical Engineering Pub Date : 2023-02-27 DOI: 10.1117/12.2667355

T. Wang, Su-Feng Chen, Y. Pang

{"title":"Effect of the salt mist testing on imaging resolution of the optical imaging system","authors":"T. Wang, Su-Feng Chen, Y. Pang","doi":"10.1117/12.2667355","DOIUrl":"https://doi.org/10.1117/12.2667355","url":null,"abstract":"The standard evaluation methods of the imaging quality of optical imaging systems are divided into evaluation methods based on electrical signals and evaluation methods based on images, but the impact of environmental testing on the imaging quality is rarely studied. This paper aims to analyze the imaging quality of a typical optical imaging system before and after the salt mist testing. By studying its imaging resolution and setting up different optical environments, the influence of salt mist testing on its imaging resolution under different optical environments is discussed here. It is found that different illumination conditions have great influence on imaging resolution, and good illumination conditions can effectively improve the resolution of camera products. In the other hand, salt mist aging testing has a great influence on the imaging resolution of the camera products, and longtime exposure to sodium chloride solution has an irreversible effect on the imaging performance of the camera. The tolerance of cameras to salt mist aging test shows two-level distribution. Some products are completely invalid, and some products have good tolerance and no obvious failure.","PeriodicalId":227067,"journal":{"name":"International Conference on Precision Instruments and Optical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130712761","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

Algorithm study and simulation analysis of double amplitude modulated for stand-off detection of ethanol 乙醇分离检测双振幅调制算法研究及仿真分析

International Conference on Precision Instruments and Optical Engineering Pub Date : 2023-02-27 DOI: 10.1117/12.2667862

Yu-Hua Zhang, Jinfeng Zhou, Ju Yu, Xiaosong Shi, Yifan Wang, Xudong Feng

{"title":"Algorithm study and simulation analysis of double amplitude modulated for stand-off detection of ethanol","authors":"Yu-Hua Zhang, Jinfeng Zhou, Ju Yu, Xiaosong Shi, Yifan Wang, Xudong Feng","doi":"10.1117/12.2667862","DOIUrl":"https://doi.org/10.1117/12.2667862","url":null,"abstract":"Ethanol has a characteristic narrow band absorption peak (2989.6 cm-1) that overlaps heavily with the airborne water vapour spectrum, severely affecting detection accuracy when the ambient humidity varies significantly. To this end it is particularly critical to investigate a method to eliminate background effects and improve the accuracy of ethanol telemetry. Firstly, the second harmonic signal of ethanol concentration under 5000~20000ppm*m water vapour environment was simulated by multi-functional fitting method, and the multivariate linear relationship between the second harmonic amplitude and water vapour concentration and ethanol concentration is obtained. Two sets of signals were obtained in one triangular wave period using double modulated amplitude and linear regression was used to solve the coefficients of the two equations, which in turn inverted the ethanol concentration in other water vapour environments. Simulation results show that the maximum error is less than 2.23ppm*m. The method also eliminates the need for complex reference light paths or expensive wide-range tunable mid-infrared lasers, reduces measurement errors due to variations in ambient humidity, and provides a basis for further development of simple, miniaturised ethanol telemetry systems.","PeriodicalId":227067,"journal":{"name":"International Conference on Precision Instruments and Optical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127562514","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

Light field image array generation for 3D printing image based on backward ray tracing 基于反向光线追踪的3D打印图像光场图像阵列生成

International Conference on Precision Instruments and Optical Engineering Pub Date : 2023-02-27 DOI: 10.1117/12.2667942

Yang Chen, Wen Qiao

引用次数: 0

Study on laser degumming and non-destructive technology of rubber press valve 橡胶压阀激光脱胶及无损技术研究

International Conference on Precision Instruments and Optical Engineering Pub Date : 2023-02-27 DOI: 10.1117/12.2668336

Bing Tang, Chen Liang, Yongbin Li, Chen Wang, Ming Hao, Yangyang Zhang, Tao Huang, Guang Li, Jie Zhu

{"title":"Study on laser degumming and non-destructive technology of rubber press valve","authors":"Bing Tang, Chen Liang, Yongbin Li, Chen Wang, Ming Hao, Yangyang Zhang, Tao Huang, Guang Li, Jie Zhu","doi":"10.1117/12.2668336","DOIUrl":"https://doi.org/10.1117/12.2668336","url":null,"abstract":"Laser degumming is a new technology in the maintenance of press valve, which has the advantages of high efficiency, high accuracy, complete degumming and low pollution. However, the metal matrix is prone to thermal damage when subjected to laser action. It is found that 1Cr18Ni9Ti is the most prone to oxidation. If 1Cr18Ni9Ti is not damaged, 2A12 and HPB59 materials will not be damaged under the same laser parameter processing. The internal metallographic structure of 1Cr18Ni9Ti sample does not change when it is oxidized at the boundary without illumination. Therefore, if the nonilluminated surface does not oxidize, it can be considered that the internal metallography of the press valve has not changed; The simulation model of rubber removal was established, and it was found that the method of switching off and on light could control the temperature in the process. When the time ratio of switching on and off light was 1: 3, the rubber residue could be completely removed without damaging the rubber press valve. The simulation parameters are applied to the actual parts experiment, and the simulation results are verified to be reliable, the temperature is controllable and the parts have no damage. The research results in this paper can achieve the task of rubber removal without damaging the substrate.","PeriodicalId":227067,"journal":{"name":"International Conference on Precision Instruments and Optical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114022558","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