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Research on the angle measurement system of bending workpieces based on multi-line structured light 基于多线结构光的弯曲工件角度测量系统研究
4区 工程技术
Optical Engineering Pub Date : 2023-10-03 DOI: 10.1117/1.oe.62.10.104101
Lei He, Jingming Xie, Moyun Liu, Guoqiang Deng, Lei Yao, Kai Hu
{"title":"Research on the angle measurement system of bending workpieces based on multi-line structured light","authors":"Lei He, Jingming Xie, Moyun Liu, Guoqiang Deng, Lei Yao, Kai Hu","doi":"10.1117/1.oe.62.10.104101","DOIUrl":"https://doi.org/10.1117/1.oe.62.10.104101","url":null,"abstract":"Nowadays, bending workpiece angle measurement methods require touching the surface, which makes them prone to scratching the workpieces and inefficient. To solve the above problems, we propose a non-contact angle measurement system based on multi-line structured light. First, a bilinear laser is projected onto the surface of the workpiece and the machine tool lower die. However, reflections on the smooth workpiece will greatly destroy measurement accuracy. In this work, a UNet-based multi-exposure image fusion strategy is proposed to clip the reflection and increase the workpiece feature. Then, the Steger algorithm is used to achieve high-precision localization of the laser centerline. Finally, the angle of the workpiece is calculated indirectly according to fitting the laser centerline plane. The experimental results demonstrate that the measurement time of each workpiece is less than 100 ms and the measurement accuracy is ±0.3 deg in extreme installation locations and shadow. The proposed system can be extended to real industrial scenarios because of its high efficiency, accuracy, and robustness.","PeriodicalId":19561,"journal":{"name":"Optical Engineering","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135696459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Target acquisition performance comparison of active continuous-wave and range-gated imaging systems at 1.6 and 2.1 μm 1.6 μm和2.1 μm有源连续波和距离门控成像系统目标捕获性能比较
4区 工程技术
Optical Engineering Pub Date : 2023-09-28 DOI: 10.1117/1.oe.62.9.094107
Joshua Follansbee, Derek Burrell, Orges Furxhi, C. Kyle Renshaw, John Lund, Ronald Driggers
{"title":"Target acquisition performance comparison of active continuous-wave and range-gated imaging systems at 1.6 and 2.1 μm","authors":"Joshua Follansbee, Derek Burrell, Orges Furxhi, C. Kyle Renshaw, John Lund, Ronald Driggers","doi":"10.1117/1.oe.62.9.094107","DOIUrl":"https://doi.org/10.1117/1.oe.62.9.094107","url":null,"abstract":"Active imaging systems can provide increased contrast-to-noise ratio (CNR) and targeting performance over passive systems in low-light and long-range applications. We use both a radiometric model and the Night Vision Integrated Performance Model to compare the performance of active continuous-wave (CW) and laser range-gated (LRG) imaging systems with laser illumination at 1.6 and 2.1 μm, corresponding to the shortwave infrared (SWIR) and extended SWIR (eSWIR) bands, respectively. The imager performance is characterized by CNR as a function of range, as well as pixels-on-target. The modeling results demonstrate increased performance in the eSWIR band over the SWIR band in the majority of cases and increased performance for LRG systems over CW systems in all cases. The in-progress design of an active imaging testbed to confirm these modeling results with field imagery is discussed.","PeriodicalId":19561,"journal":{"name":"Optical Engineering","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135343984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hybrid aerosol jet μ-stereolithography additive manufacturing for fabrication of multi-material polymer step-index optics 混合气溶胶喷射μ-立体光刻增材制造多材料聚合物阶跃折射率光学器件
4区 工程技术
Optical Engineering Pub Date : 2023-09-26 DOI: 10.1117/1.oe.62.9.095105
Hossein Salmani Rezaei, Moritz Hinkelmann, Jörg Neumann, Dietmar Kracht, Ludger Overmeyer
{"title":"Hybrid aerosol jet μ-stereolithography additive manufacturing for fabrication of multi-material polymer step-index optics","authors":"Hossein Salmani Rezaei, Moritz Hinkelmann, Jörg Neumann, Dietmar Kracht, Ludger Overmeyer","doi":"10.1117/1.oe.62.9.095105","DOIUrl":"https://doi.org/10.1117/1.oe.62.9.095105","url":null,"abstract":"We propose a technique for additive manufacturing of polymer step-index (STIN) optics. The process is composed of aerosol jet multi-material deposition followed by laser-assisted stereolithography in an alternating fashion to fabricate multi-material three-dimensional objects. The layer-wise dynamic tuning of the refractive index provides the possibility to fabricate optics with tailored index profiles. The index range achieved by the presented approach is considerably higher than the common index tuning techniques. Using this technique, a planar multilayer STIN lens is fabricated. The index profile of the fabricated lens has similar progression to the designed profile. In addition, through simulation and also optical characterization, the lensing functionality of the structure is observed.","PeriodicalId":19561,"journal":{"name":"Optical Engineering","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134885572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improved calibration method for a telecentric structured light system 一种改进的远心结构光系统标定方法
4区 工程技术
Optical Engineering Pub Date : 2023-09-26 DOI: 10.1117/1.oe.62.9.094106
Dongai Wang, Chao Chen
{"title":"Improved calibration method for a telecentric structured light system","authors":"Dongai Wang, Chao Chen","doi":"10.1117/1.oe.62.9.094106","DOIUrl":"https://doi.org/10.1117/1.oe.62.9.094106","url":null,"abstract":"","PeriodicalId":19561,"journal":{"name":"Optical Engineering","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134886017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Folded light source: a technique for compact and efficient automotive lighting 折叠光源:一种紧凑高效的汽车照明技术
4区 工程技术
Optical Engineering Pub Date : 2023-09-23 DOI: 10.1117/1.oe.62.9.095104
Alfred Moore, Hossein Alisafaee
{"title":"Folded light source: a technique for compact and efficient automotive lighting","authors":"Alfred Moore, Hossein Alisafaee","doi":"10.1117/1.oe.62.9.095104","DOIUrl":"https://doi.org/10.1117/1.oe.62.9.095104","url":null,"abstract":"Segmented reflectors are frequently used in automotive lighting applications. Extended light sources are one of the limiting factors on the compactness of segmented reflectors. We propose the technique of folding the light source for achieving highly compact reflector designs while improving their efficiency. We then use the macrofocal approach to design legal low-beam reflectors based on the proposed folded light source technique. We show that our method can deliver 51.2% more optical flux, which results in a significant improvement in the efficiency equal to 26.2%. This technique would allow optical engineers to design more compact and energy-efficient products for automotive headlamps and for general lighting applications.","PeriodicalId":19561,"journal":{"name":"Optical Engineering","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135957841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthetic-wavelength phase guided phase unwrapping method for dual-wavelength digital holography 双波长数字全息合成波长相位引导相位展开方法
4区 工程技术
Optical Engineering Pub Date : 2023-09-23 DOI: 10.1117/1.oe.62.9.094105
Kaiping Li, Ping Cai
{"title":"Synthetic-wavelength phase guided phase unwrapping method for dual-wavelength digital holography","authors":"Kaiping Li, Ping Cai","doi":"10.1117/1.oe.62.9.094105","DOIUrl":"https://doi.org/10.1117/1.oe.62.9.094105","url":null,"abstract":"Dual-wavelength or multi-wavelength digital holography extends the axial measurement range to the order of several microns or more, but the noise enlargement effect greatly affects the measurement accuracy. To address this problem, an unwrapping method is proposed based on synthetic-wavelength phase and searching process. This methodology implements noise suppression using phase unwrapping at the single-wavelength level and averaging. We introduce the analytical approach and provide a simulation analysis to demonstrate the effectiveness of this noise suppression method. The proposed method is used to measure a standard step and the results demonstrated the feasibility of the proposed method in practical usage.","PeriodicalId":19561,"journal":{"name":"Optical Engineering","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135957986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Broadband mid-infrared polarization beam splitter with high extinction ratio based on GaAs hybrid plasma three-guide directional coupler 基于砷化镓杂化等离子体三导定向耦合器的高消光比宽带中红外偏振分束器
4区 工程技术
Optical Engineering Pub Date : 2023-09-21 DOI: 10.1117/1.oe.62.9.097103
Fang Wang, Hua Liu, Tao Ma, Shoudao Ma, Yufang Liu
{"title":"Broadband mid-infrared polarization beam splitter with high extinction ratio based on GaAs hybrid plasma three-guide directional coupler","authors":"Fang Wang, Hua Liu, Tao Ma, Shoudao Ma, Yufang Liu","doi":"10.1117/1.oe.62.9.097103","DOIUrl":"https://doi.org/10.1117/1.oe.62.9.097103","url":null,"abstract":"","PeriodicalId":19561,"journal":{"name":"Optical Engineering","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136128962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hyperspectral unmixing method based on dual-branch multiscale residual attention network 基于双分支多尺度残差关注网络的高光谱解混方法
4区 工程技术
Optical Engineering Pub Date : 2023-09-21 DOI: 10.1117/1.oe.62.9.093102
Congping Chen, Zhiwei Xu, Peng Lu, Nuo Cao
{"title":"Hyperspectral unmixing method based on dual-branch multiscale residual attention network","authors":"Congping Chen, Zhiwei Xu, Peng Lu, Nuo Cao","doi":"10.1117/1.oe.62.9.093102","DOIUrl":"https://doi.org/10.1117/1.oe.62.9.093102","url":null,"abstract":"","PeriodicalId":19561,"journal":{"name":"Optical Engineering","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136128963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Research on multiple-image encryption method using modified Gerchberg–Saxton algorithm and chaotic systems 基于改进Gerchberg-Saxton算法和混沌系统的多图像加密方法研究
4区 工程技术
Optical Engineering Pub Date : 2023-09-21 DOI: 10.1117/1.oe.62.9.098103
Anlin Wang, Chuan Shen, Junqiao Pan, Cheng Zhang, Hong Cheng, Sui Wei
{"title":"Research on multiple-image encryption method using modified Gerchberg–Saxton algorithm and chaotic systems","authors":"Anlin Wang, Chuan Shen, Junqiao Pan, Cheng Zhang, Hong Cheng, Sui Wei","doi":"10.1117/1.oe.62.9.098103","DOIUrl":"https://doi.org/10.1117/1.oe.62.9.098103","url":null,"abstract":"","PeriodicalId":19561,"journal":{"name":"Optical Engineering","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136131076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ultrafast nonlinear absorption properties of SnO2/Ag/SnO2 composite films based on Z-scan measurement 基于z扫描测量的SnO2/Ag/SnO2复合膜的超快非线性吸收特性
4区 工程技术
Optical Engineering Pub Date : 2023-09-21 DOI: 10.1117/1.oe.62.9.097104
Chang Ding, Hecong Wang, Lu Zhang, Mukhtiar Ali, Hong Qi, Fei Wang, Guangming Wang, Wenjun Sun
{"title":"Ultrafast nonlinear absorption properties of SnO2/Ag/SnO2 composite films based on Z-scan measurement","authors":"Chang Ding, Hecong Wang, Lu Zhang, Mukhtiar Ali, Hong Qi, Fei Wang, Guangming Wang, Wenjun Sun","doi":"10.1117/1.oe.62.9.097104","DOIUrl":"https://doi.org/10.1117/1.oe.62.9.097104","url":null,"abstract":"To explore the nonlinear absorption (NLA) properties of the SnO2 composite system, SnO2 / Ag / SnO2 (SAS) composited films were prepared by magnetron sputtering at room temperature. The NLA properties were investigated using femtosecond Z-scan technology at a wavelength of 800 nm. The results show that as the sputtering power of the Ag layer increases, the NLA type of the composite films changes from reverse saturated absorption to saturated absorption. According to the research results, adding the Ag layer can regulate the NLA type of composite films. In addition, by increasing the sputtering power of the Ag layer and the incident laser energy intensity, the NLA behavior of the composite films is improved. Compared with the monolayer SnO2 film, the NLA coefficient (β) of the composite film has increased by 17 times. We provide a new perspective for the application of SAS composite films in optoelectronic devices.","PeriodicalId":19561,"journal":{"name":"Optical Engineering","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136154171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","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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