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Application of CO2 laser for electronic components soldering CO2激光器在电子元件焊接中的应用
Symposium on Optics in Industry Pub Date : 2011-09-24 DOI: 10.1117/12.912122
J. Mascorro-Pantoja, J. J. Soto-Bernal, M. Nieto-Pérez, R. González-Mota, I. Rosales-Candelas
{"title":"Application of CO2 laser for electronic components soldering","authors":"J. Mascorro-Pantoja, J. J. Soto-Bernal, M. Nieto-Pérez, R. González-Mota, I. Rosales-Candelas","doi":"10.1117/12.912122","DOIUrl":"https://doi.org/10.1117/12.912122","url":null,"abstract":"Laser provides a high controllable and localized spot for soldering joint formation and this is a valuable tool in Sn/Pb Soldering process on electronic industry, in recent years, laser beam welding has become an emerging welding technique, the use of laser in welding area is a high efficiency method. A 60 Watts CO2 continuous laser was used on this study, during welding experimental results indicated the laser could significantly improve speed and weld quality. In this work, the welding interactions of CO2 laser with Sn/Pb wire have been investigated in details through varying the energy ratios of laser. And at the same time, the effect of distance from laser spot to material.","PeriodicalId":359625,"journal":{"name":"Symposium on Optics in Industry","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131054150","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
Polarimetric applications to identify bee honey 偏振法在鉴定蜜蜂蜂蜜中的应用
Symposium on Optics in Industry Pub Date : 2011-09-24 DOI: 10.1117/12.911903
R. Espinosa-Luna, Izcoatl Saucedo-Orozco, Cynthia V. Santiago-Lona, Juan M. Franco-Sánchez, Alejandro Magallanes-Luján
{"title":"Polarimetric applications to identify bee honey","authors":"R. Espinosa-Luna, Izcoatl Saucedo-Orozco, Cynthia V. Santiago-Lona, Juan M. Franco-Sánchez, Alejandro Magallanes-Luján","doi":"10.1117/12.911903","DOIUrl":"https://doi.org/10.1117/12.911903","url":null,"abstract":"A polarimetric characterization, consisting of the Mueller matrix determination and the measurement of the refractive index, is employed to study bee honey and corn syrup differences. Two samples of commercial marks of bee honey and one sample of commercial mark corn syrup are studied. Results show the corn syrup and one of the bee honey samples have a similar polarimetric behavior, which differs from the second bee honey sample. This behavior can be employed as a simple, qualitative test, to discriminate true bee honey from corn syrup or from adulterated bee honey.s-powe","PeriodicalId":359625,"journal":{"name":"Symposium on Optics in Industry","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115293106","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: 2
Circular polarization-splitting common-path interferometer based on a zero-twist liquid crystal display 基于零扭液晶显示的圆偏振分裂共路干涉仪
Symposium on Optics in Industry Pub Date : 2009-12-03 DOI: 10.1117/12.851125
Jeffrey A. Davis, B. M. Pascoguin, I. Moreno, A. Nava-Vega
{"title":"Circular polarization-splitting common-path interferometer based on a zero-twist liquid crystal display","authors":"Jeffrey A. Davis, B. M. Pascoguin, I. Moreno, A. Nava-Vega","doi":"10.1117/12.851125","DOIUrl":"https://doi.org/10.1117/12.851125","url":null,"abstract":"It is present a unique compact optical circular-polarization-splitting common-path interferometer, described based on a zero-twist liquid crystal display (LCD) [1]. A blazed diffraction grating is encoded onto the LCD. The optical train produces two beams, a reference beam with a sense of circular polarized light and a diffracted one with the opposite sense of circular polarized light. Using a linear polarizer, these two beams form an interferogram that can be used to analyze optically active media. The detail of the light behaviour through the optical train is present using Jones matrix's.","PeriodicalId":359625,"journal":{"name":"Symposium on Optics in Industry","volume":"315 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124238212","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: 3
Optimization of an optoelectronic system to detect volatile organic compound vapours 检测挥发性有机化合物蒸气的光电系统优化
Symposium on Optics in Industry Pub Date : 2009-12-03 DOI: 10.1117/12.848963
C. Martínez-Hipatl, S. Muñoz-Aguirre, J. Castillo-Mixcóatl, G. Beltrán-Pérez
{"title":"Optimization of an optoelectronic system to detect volatile organic compound vapours","authors":"C. Martínez-Hipatl, S. Muñoz-Aguirre, J. Castillo-Mixcóatl, G. Beltrán-Pérez","doi":"10.1117/12.848963","DOIUrl":"https://doi.org/10.1117/12.848963","url":null,"abstract":"In a previous work the monitoring of the fringes pattern shift produced by the interaction of a polymeric film with volatile organic compounds (VOC), by a Pohl interferometric arrangement has been reported. Such fringes shift was measured by a conventional photodetector. In the present work the optimization of an optoelectronic system for detection and quantification of VOC is presented. In this new arrangement a charge coupled device (camera CCD) was used to monitor such fringes shift. The CCD takes advantage of the fact that each pixel can be used as a single photodetector. A program was realized in matlab for the acquisition and processing of the data, which allows to evaluate faster the obtained results. Up to the moment results of the system performance by the measurement of the steady state response of dimethylpolysiloxane (DMPS) to ethanol vapour are reported.","PeriodicalId":359625,"journal":{"name":"Symposium on Optics in Industry","volume":"207 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132435560","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
First-order design of off-axis reflective ophthalmic adaptive optics systems using afocal telescopes 离轴反射眼自适应光学系统的一阶设计
Symposium on Optics in Industry Pub Date : 2009-10-13 DOI: 10.1117/12.845198
A. Gómez-Vieyra, A. Dubra, David Williams, D. Malacara-hernández
{"title":"First-order design of off-axis reflective ophthalmic adaptive optics systems using afocal telescopes","authors":"A. Gómez-Vieyra, A. Dubra, David Williams, D. Malacara-hernández","doi":"10.1117/12.845198","DOIUrl":"https://doi.org/10.1117/12.845198","url":null,"abstract":"Scanning laser ophthalmoscopes (SLOs) and optical coherence tomographs are the state-of-the-art retinal imaging instruments, and are essential for early and reliable diagnosis of eye disease. Recently, with the incorporation of adaptive optics (AO), these instruments have started to deliver near diffraction-limited performance in both humans and animal models, enabling the resolution of the retinal ganglion cell bodies, their processes, the cone photoreceptor and the retinal pigment epithelial cells mosaics. Unfortunately, these novel instruments have not delivered consistent performance across human subjects and animal models. One of the limitations of current instruments is the astigmatism in the pupil and imaging planes, which degrades image quality, by preventing the wavefront sensor from measuring aberrations with high spatial content. This astigmatism is introduced by the sequence of off-axis reflective elements, typically spherical mirrors, used for relaying pupil and imaging planes. Expressions for minimal astigmatism on the image and pupil planes in off-axis reflective afocal telescopes formed by pairs of spherical mirrors are presented. The formulas, derived from the marginal ray fans equation, are valid for small angles of incidence (≤15°), and can be used to design laser cavities, spectrographs and vision adaptive optics systems. An example related to this last application is discussed.","PeriodicalId":359625,"journal":{"name":"Symposium on Optics in Industry","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127732289","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: 61
Development and implementation of photometric bench based on neutral optical density filters 基于中性光密度滤光片的光度台的开发与实现
Symposium on Optics in Industry Pub Date : 2009-09-26 DOI: 10.1117/12.844973
L. González-Galván, R. A. Chávez-Velázquez, R. López-Ramírez, N. Vidal-Medina, H. Zárate-Hernández, E. Rosas
{"title":"Development and implementation of photometric bench based on neutral optical density filters","authors":"L. González-Galván, R. A. Chávez-Velázquez, R. López-Ramírez, N. Vidal-Medina, H. Zárate-Hernández, E. Rosas","doi":"10.1117/12.844973","DOIUrl":"https://doi.org/10.1117/12.844973","url":null,"abstract":"We present the development of a semi-automated photometric bench implemented at the Laboratorio de Fotometria of the Centro Nacional de Metrologia of Mexico, in order to reduce the illuminance meters calibration time. This photometric bench reproduces the minimum values established in the Mexican regulation NOM-025-STPS-2008 and allows the fast calibration of the luxmeters required for illuminance levels checks. The photometric bench design uses neutral optical density filters in order to realize different illuminances at the same distance. Here we also present the uncertainty estimated for the reference illuminance values realized by the implemented photometric bench.","PeriodicalId":359625,"journal":{"name":"Symposium on Optics in Industry","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133874518","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: 2
Glass doped with semiconductor nanoparticles for optical devices 掺杂半导体纳米粒子的光学器件玻璃
Symposium on Optics in Industry Pub Date : 2009-09-26 DOI: 10.1117/12.849064
E. Rodriguez, L. Ponce, M. Arronte, E. de Posada, G. Kellerman, C. César, L. Barbosa
{"title":"Glass doped with semiconductor nanoparticles for optical devices","authors":"E. Rodriguez, L. Ponce, M. Arronte, E. de Posada, G. Kellerman, C. César, L. Barbosa","doi":"10.1117/12.849064","DOIUrl":"https://doi.org/10.1117/12.849064","url":null,"abstract":"We report the fabrication of glass multilayer doped with semiconductor nanoparticles. The glass matrix was fabricated by Plasma Enhanced Chemical Deposition (PECVD using tetramethoxysilane (TMOS) as precursor. The RF power was supplied by a RF-150 TOKYO HI-Power operating at 13.56 MHz and coupled to the RF electrodes through a matching box. The nanoparticles were grown by pulsed laser deposition (PLD) of a PbTe target using the second harmonic of a Q-Switched Quantel Nd:YAG laser in high purity inert gas atmosphere. The influence of gas and background pressure and in the nanoparticle size and size distribution is studied. The morphological properties of the nanostructured material were studied by means of High Resolution Transmission Electron Microscopy(HRTEM), grazing-incidence smallangleX-ray scattering (GISAXS).","PeriodicalId":359625,"journal":{"name":"Symposium on Optics in Industry","volume":"7499 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130726822","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
On the Nd:YAG pulsed laser processing of rigid PVC Nd:YAG脉冲激光加工硬质PVC的研究
Symposium on Optics in Industry Pub Date : 2009-09-26 DOI: 10.1117/12.848713
L. Hernandez, M. Arronte, Luis Ponce, T. Flores, J. Guerrero, E. Posada, E. Rodriguez
{"title":"On the Nd:YAG pulsed laser processing of rigid PVC","authors":"L. Hernandez, M. Arronte, Luis Ponce, T. Flores, J. Guerrero, E. Posada, E. Rodriguez","doi":"10.1117/12.848713","DOIUrl":"https://doi.org/10.1117/12.848713","url":null,"abstract":"The potential of Nd:YAG pulsed laser to processing PVC sheets minimizing HCl gases emission is investigated. We studied the gas emission when the PVC is cut by either CO2 or Nd:YAG pulsed laser by using FTIR Spectroscopy. Optical microscopy of laser treated PVC samples was performed in order to demonstrate the carbonization. On the other hand, LIBS spectroscopy for two different ranges of pulse duration was employed in order to investigate the plume composition during the Nd:YAG pulsed laser ablation process. The experiments shows that Cl atoms are emitted during the Nd:YAG pulsed laser ablation although the HCl gases are produced at low levels. In order to explain the sub-surface irregularities detected for Nd:YAG laser irradiation, a one-dimensional model is developed to study the temperature evolution inside the sample. We demonstrate that the ablation mechanisms prevail on thermally drive emission until 70 μm, afterwards the thermal expansion process is already observed.","PeriodicalId":359625,"journal":{"name":"Symposium on Optics in Industry","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133107802","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
Method of analysis to measure the spherical power in ophthalmic lenses 眼科镜片球形度数测量的分析方法
Symposium on Optics in Industry Pub Date : 2009-09-26 DOI: 10.1117/12.849059
Alicia Bustillos-Trujillo, G. Trujillo-Schiaffino, D. P. Salas-Peimbert, P. G. Mendoza-Villegas
{"title":"Method of analysis to measure the spherical power in ophthalmic lenses","authors":"Alicia Bustillos-Trujillo, G. Trujillo-Schiaffino, D. P. Salas-Peimbert, P. G. Mendoza-Villegas","doi":"10.1117/12.849059","DOIUrl":"https://doi.org/10.1117/12.849059","url":null,"abstract":"In this paper we propose a new method of analysis to obtain the spherical power in ophthalmic lenses based on ray traces of geometric optics techniques, formation, capture and image processing. We determine the spherical power in ophthalmic lenses considering the total magnification of the optical system and the Gauss's formula. A simple, practical and easy to implement experimental setup is presented for the measurement of positives and negative lenses. The setup consists in a circular object displayed in a LCD monitor, the ophthalmic lens to be measured and a digital camera in order to send information to a PC containing the software algorithm which calculates and displays the spherical power.","PeriodicalId":359625,"journal":{"name":"Symposium on Optics in Industry","volume":"264 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130804740","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
Method of analysis to measure the tangential curvature in a test sphere 测量测试球体切向曲率的分析方法
Symposium on Optics in Industry Pub Date : 2009-09-26 DOI: 10.1117/12.848966
P. G. Mendoza-Villegas, G. Trujillo-Schiaffino, D. P. Salas-Peimbert, Alicia Bustillos-Trujillo
{"title":"Method of analysis to measure the tangential curvature in a test sphere","authors":"P. G. Mendoza-Villegas, G. Trujillo-Schiaffino, D. P. Salas-Peimbert, Alicia Bustillos-Trujillo","doi":"10.1117/12.848966","DOIUrl":"https://doi.org/10.1117/12.848966","url":null,"abstract":"Several techniques have been used to determine the radius of curvature of the cornea. In this article, we describe the use of a method obtained trough ray analysis, based in geometrical analysis and lateral magnification equation. A pattern of an increasing point was displayed in a flat screen monitor; images of this point were captured for a test sphere with a CCD camera. The obtained data was then processed for the calculation of the sphere curvature. The experimental setup is presented.","PeriodicalId":359625,"journal":{"name":"Symposium on Optics in Industry","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116570149","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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