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Multi-functional laser precision processing system 多功能激光精密加工系统
International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586066
J. Xi, C. Zhang, Lb Zhang
{"title":"Multi-functional laser precision processing system","authors":"J. Xi, C. Zhang, Lb Zhang","doi":"10.1117/12.2586066","DOIUrl":"https://doi.org/10.1117/12.2586066","url":null,"abstract":"With the improvement of processing level, the combination of laser technology and numerical control system has become the trend of laser precision processing system. Different materials also have different requirements on laser power. The system adopts the mode of PC+GTS motion controller to accomplish laser precision processing of different workpieces. The power of laser processing is changed by modifying the parameters of PWM signal with the instructions of human-computer interface program. The laser power can be adjusted quickly to achieve precision processing of different materials and types.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"4 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":"129184888","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 new type of unitized design for the structure of a space camera using topology optimization 一种基于拓扑优化的空间相机结构单元化设计方法
International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586549
Jing Ye, Yang Song, Yongqiang Duan, Yongming Hu, Bin Hu
{"title":"A new type of unitized design for the structure of a space camera using topology optimization","authors":"Jing Ye, Yang Song, Yongqiang Duan, Yongming Hu, Bin Hu","doi":"10.1117/12.2586549","DOIUrl":"https://doi.org/10.1117/12.2586549","url":null,"abstract":"Mechanical structure, of which a trade-off between weight and strength has always been considered primely, is important for a space camera as a hub for other assemblies such as optics parts, electronic parts, etc. Traditionally the space camera is composed of a nearly line-up of arrangements containing different units, which is easy to assemble and manufacture, however, not a good type for mechanical properties due to the cantilever structure. We present a new type of unitized design for the structure of the space camera, which unite the tube and the electric cabinet as one unit, with the PCBs (Printed Circuit Boards) surrounded. The main frame is optimized by using topology optimization, improving the characteristic of the structure. The maneuverability has also been considered. Compared with some traditional type, the new type proved to be lighter and more compact, which is beneficial to the mechanical properties and the cost control of satellite launching.","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":"127767312","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
Iterative reconstruction for linear imaging spectropolarimetry without polarimetric calibration 无偏振校正的线性成像光谱偏振法迭代重建
International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2587680
Feng Han, Tingkui Mu, Abudusalamu Tuniyazi, Qiuxia Li, Hang Gong, Haoyang Li, Wenjing Wang
{"title":"Iterative reconstruction for linear imaging spectropolarimetry without polarimetric calibration","authors":"Feng Han, Tingkui Mu, Abudusalamu Tuniyazi, Qiuxia Li, Hang Gong, Haoyang Li, Wenjing Wang","doi":"10.1117/12.2587680","DOIUrl":"https://doi.org/10.1117/12.2587680","url":null,"abstract":"Usually, the practical analysis states of an imaging polarimeter needs to be calibrated, with a set of standard polarization states, for the accurate reconstruction of Stokes parameters. However, it is really challenged to get the standard elements over wide field of view (FOV), broad waveband, large aperture, or other non-trivial conditions. Even if the system is well calibrated, the calibrated system will be disturbed in the vibration environment. To avoid the difficult from the standard polarization states, an iterative reconstruction method is presented at the first time to recover the polarization parameters from the data acquired by linear-Stokes polarimeters without polarimetric calibrations. Inspired from phase shifting interferometry, the method employs two least-squares iterative procedure and requires no any extra element for assistant. And we extend the method to a channeled linear imaging spectropolarimeter, channeled linear imaging spectropolarimeter can measure a two-dimensional distribution of spectrally-resolved linear Stokes parameters in a single-shot polarization modulation. However, the state-of-art reconstruction method, Fourier transform method (FTM), usually transforms the modulated spectrum into the frequency domain for further processing. As a result, there is channel crosstalk issue that limits available frequency bandwidth. In addition, FTM needs extra phase calibration to decode final spectra. We present a continuous slide iterative method (CSIM) in the spectral domain to avoid the use of the Fourier transform and phase calibration. It combines a sliding unit cell kernel in the spectral domain that provides unit cell tracking and a loop of twostep least-squares fit that estimates spatially-resolved polarized spectra.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"23 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":"127903762","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
Optimization design of porous aerostatic bearing for full aperture rapid planar polishing machine 全孔径平面快速抛光机多孔静压轴承的优化设计
International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586832
Mingchen Cao, Huiying Zhao, R. Xie, Shenggen Zhu, Lingyu Zhao, Jinfeng Bai, D. Ma, Yuxuan Cao, Jianjun Chen
{"title":"Optimization design of porous aerostatic bearing for full aperture rapid planar polishing machine","authors":"Mingchen Cao, Huiying Zhao, R. Xie, Shenggen Zhu, Lingyu Zhao, Jinfeng Bai, D. Ma, Yuxuan Cao, Jianjun Chen","doi":"10.1117/12.2586832","DOIUrl":"https://doi.org/10.1117/12.2586832","url":null,"abstract":"Full aperture rapid planar polishing (RPP) equipment has been widely used in the field of optical processing, which requires high precision and stability of the polishing shaft. With high stability and sustainability of precision, the aerostatic bearing is the potential technology for RPP machine. To meet the needs of RPP machine, Fluent was used to analyze the load-bearing characteristics of high-precision aerostatic bearing. Based on the simulated results, the parameter optimization design for porous aerostatic bearing was conducted to get better load-bearing characteristics, including bearing capacity, static stiffness and gas consumption. The influence of air supply pressure, porous material thickness and film thickness on bearing characteristics were studied, and the simulation analysis was performed to get the optimal design parameters for aerostatic bearing. The simulated results show that the designed high-precision aerostatic bearing can satisfy the requirements of RPP machine.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"48 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":"131621181","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
Epidermal layer recognition of optical coherence tomography skin images 光学相干层析皮肤图像表皮层识别
International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586659
Chenming Yang, Zhongliang Li, Nan Nan, Yang Bu, Xiang-zhao Wang
{"title":"Epidermal layer recognition of optical coherence tomography skin images","authors":"Chenming Yang, Zhongliang Li, Nan Nan, Yang Bu, Xiang-zhao Wang","doi":"10.1117/12.2586659","DOIUrl":"https://doi.org/10.1117/12.2586659","url":null,"abstract":"Epidermal layer recognition is an effective way to diagnose the severity of psoriasis and other skin diseases. Optical coherence tomography (OCT) is a non-invasive imaging modality that acquires images of tissue in vivo and plays an important role in detecting skin diseases and assessing therapeutic effects. In this paper, a method for epidermal layer recognition of OCT skin images is proposed. Firstly, the skin surface is obtained based on the axial gradient map. Then the original image is flattened according to the estimated skin surface. And the potential region of the dermo-epidermal junction (DEJ) is obtained according to the mean column signal. Finally, the epidermal layer is identified by topology transmission and seed filling. The method can automatically segment the curved mastoid structure of the DEJ which is suitable for OCT images of skin with weakened signal intensity of dermis due to dermatitis or other diseases.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"49 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":"126939332","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
A novel conditioning method for pad profile accuracy in full aperture polishing 一种新的全孔径抛光垫形精度调节方法
International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586484
X. Ban, Huiying Zhao, Xueliang Zhu
{"title":"A novel conditioning method for pad profile accuracy in full aperture polishing","authors":"X. Ban, Huiying Zhao, Xueliang Zhu","doi":"10.1117/12.2586484","DOIUrl":"https://doi.org/10.1117/12.2586484","url":null,"abstract":"Full aperture polishing (FAP) is widely used as the final finishing process of large optical flats to obtain super smooth surface. The polishing pad is an important part in the FAP system, and its conditioning accuracy has a great influence on the polishing flatness of the component. However, the traditional full-aperture conditioning method (FCM) has been unable to meet the current use requirements, especially for large-size polishing plate. In this paper, we propose a subaperture fixed connection conditioning method (SFCCM), which reduces the size of conditioner and adds its movement. Based on the theory of multi-system kinematics and coordinate transformation, the formation mechanism of the surface profile error of pad is studied, the conditioning error transfer model is established, and the main error factors that affect the conditioning accuracy are pointed out. Through error compensation, the conditioning accuracy is improved. Experimental results showed that SFCCM has a better surface profile modification effect than FCM. Furthermore, the surface accuracy of the optical component of SFCCM is higher than that of FCM in the same FAP process.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"63 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":"130745479","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 a non-contact human body temperature measurement system 一种非接触式人体体温测量系统的设计
International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586191
X. Deng, Junhong Su
{"title":"Design of a non-contact human body temperature measurement system","authors":"X. Deng, Junhong Su","doi":"10.1117/12.2586191","DOIUrl":"https://doi.org/10.1117/12.2586191","url":null,"abstract":"This article uses AT89S51 single-chip microcomputer as the CPU of the human body temperature measurement system, uses the MLX90614 sensor to measure the body temperature, assists the use of the HC-SR04 ultrasonic module and the DS18B20 digital temperature sensor to measure the distance between the target and the system and the ambient temperature, and displays the temperature on the LCD system . It is suitable for non-contact measurement in public places, and can detect body temperature quickly and effectively with high accuracy.","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":"129671682","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
Research of robotic spherical polishing end effector based on finite element simulation 基于有限元仿真的机器人球面抛光末端执行器研究
International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2584956
Ruixin Mu, Jian Zhang
{"title":"Research of robotic spherical polishing end effector based on finite element simulation","authors":"Ruixin Mu, Jian Zhang","doi":"10.1117/12.2584956","DOIUrl":"https://doi.org/10.1117/12.2584956","url":null,"abstract":"In this paper, using Preston hypothesis and CCOS removal model, analyzing removal function of the spherical polishing end is analyzed as Gaussian distribution, four schemes are proposed to design the robot optical spherical polishing end effector. Through the analysis and comparison of advantages and disadvantages, an optimal solution is obtained and a standardized design is carried out to realize the synthesis of revolution and rotation of the spherical polishing wheel. The design of the spherical polishing tool adopts bevel gear transmission, belt transmission and planetary gear structure. When the motor input is 200r/min, by adjusting the specifications of the pulley, the spherical polishing wheel can achieve a revolution speed of 60r/min and a rotation speed of 100~400r/min. After the design is completed, finite element analysis is performed on the important parts of the structure, and the designed structure meets the strength requirements.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"122 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":"122604587","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
Polarized image enhancement based on biological vision 基于生物视觉的偏振图像增强
International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586759
Yifan He, Chunmin Zhang, Tingkui Mu
{"title":"Polarized image enhancement based on biological vision","authors":"Yifan He, Chunmin Zhang, Tingkui Mu","doi":"10.1117/12.2586759","DOIUrl":"https://doi.org/10.1117/12.2586759","url":null,"abstract":"For passive polarization detection, limited by the scattering medium and the sensitivity of the detector, the detector usually can only receive the polarization information of the weak target. Moreover, nonlinear operators usually amplify the influence of noise in polarization parameter images. These factors result in low SNR of polarization images, which affects the application of polarization technology in different fields. This paper proposes a polarization image layering algorithm based on the principle of biological vision, which uses the statistical characteristics of the angle of polarization (AoP) as the weight parameter to perform contrast enhancement and denoising operations on the degree of polarization (DoP) image. And the final result can be obtained by simple fusion. Experimental results demonstrate that the algorithm is capable of improving the DOP of the target while suppressing background noise, which may provide new ideas for the application of polarized target detection and polarization visualization in interdisciplinary fields.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"70 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":"117283066","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
Diode-pumped room temperature continuous-wave operation Tm: YAP thin-disk laser 二极管泵浦室温连续波操作Tm: YAP薄板激光器
International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586655
Jin-ming Shang, Chengao Yang, Yi-hang Chen, Yi Zhang, Yu Zhang, Tian-fang Wang, Sen-sen Li, Z. Niu
{"title":"Diode-pumped room temperature continuous-wave operation Tm: YAP thin-disk laser","authors":"Jin-ming Shang, Chengao Yang, Yi-hang Chen, Yi Zhang, Yu Zhang, Tian-fang Wang, Sen-sen Li, Z. Niu","doi":"10.1117/12.2586655","DOIUrl":"https://doi.org/10.1117/12.2586655","url":null,"abstract":"Mid-infrared spectral region (2-4 μm) is acquiring significant attention due to the presence of various enabling applications in the field of remote gas detection, environmental pollution detection applications. Tm:YAP is an important crystal materials for diode-pumped laser emission of 2μm wavelength. We report a room-temperature diode pumped Tm:YAP thin disk laser. The maximum output power was 3.5 W at wavelength of 1940 nm.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"63 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":"134295797","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
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