Symposium on Optics in Industry最新文献_第2页

Compound optofluidic small lenses with varifocal possibility 具有变焦可能性的复合光流小透镜

Symposium on Optics in Industry Pub Date : 2011-09-24 DOI: 10.1117/12.910196

S. Calixto, Martha Rosete Aguilar, Olga L. Torres Rocha, F. J. Sánchez Marín, Margarita Calixto Solano, E. M. Martinez Prado

引用次数: 1

Ray tracing to study of waxes around the cloud point by optical absorption tomography 用光学吸收层析成像技术研究云点周围蜡的射线追踪

Symposium on Optics in Industry Pub Date : 2011-09-24 DOI: 10.1117/12.914746

L. Moreno-Álvarez, C. Meneses-Fabian, J. N. Herrera, G. Rodríguez-Zurita

{"title":"Ray tracing to study of waxes around the cloud point by optical absorption tomography","authors":"L. Moreno-Álvarez, C. Meneses-Fabian, J. N. Herrera, G. Rodríguez-Zurita","doi":"10.1117/12.914746","DOIUrl":"https://doi.org/10.1117/12.914746","url":null,"abstract":"In optical tomography of parallel projections, the light rays that cross the slice of the object are experimentally approached to suffer minimal refraction, i.e. take refractional limits. Generally, a media is used for immersion whose refractive index rate tied the environment to study, but the geometry of the containment vessels also affects refraction and may be the case that the approach is not subject performed. In this work we make a numerical study of the refraction of a ray of light that enters a typical experimental system for studying the thermodynamic behaviour of a paraffinic wax around their cloud point. Since it has special properties in the heat capacity and refractive index near the phase transition, these results will be used to characterize the transition and is intended to give tomographic information to the study of thermal properties obtained using the T-History calorimetric technique. In this study, we simulate the behaviour of the refraction of parallel rays crossing the T-History test system to find the optimal values of the dimensions of the containment vessels and the index of refraction of the medium for immersion, considering that the optical properties of the sample under study vary with temperature. Thus, we obtain the optimum conditions of minimum refraction technique for which reconstruction of a tomographic slice parallel projection can be applied. The distribution of the linear attenuation coefficient on the slice of the object, typically, is obtained by applying the filtered backprojection algorithm to the set of projections (sinogram) obtained experimentally, which constitutes a way to detect mobile interfacial boundaries in real time. The projections are sequentially measuring the intensity of the wave emerging from the slice of the object at different angles.","PeriodicalId":359625,"journal":{"name":"Symposium on Optics in Industry","volume":"252 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":"133882157","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

Analysis of incidence of keratoconus in relatives of patients who underwent corneal transplant due to advanced keratoconus using the Orbscan II topographic graphs 应用Orbscan II型地形图分析晚期圆锥角膜患者行角膜移植患者亲属圆锥角膜的发生率

Symposium on Optics in Industry Pub Date : 2011-09-24 DOI: 10.1117/12.906760

E. López Olazagasti, César E. Hernández y del Callejo, J. Ibarra-Galitzia, G. Ramírez-Zavaleta, E. Tepichin

{"title":"Analysis of incidence of keratoconus in relatives of patients who underwent corneal transplant due to advanced keratoconus using the Orbscan II topographic graphs","authors":"E. López Olazagasti, César E. Hernández y del Callejo, J. Ibarra-Galitzia, G. Ramírez-Zavaleta, E. Tepichin","doi":"10.1117/12.906760","DOIUrl":"https://doi.org/10.1117/12.906760","url":null,"abstract":"Keratoconus is a corneal disease in which the cornea assumes a conical shape due to an irregular alteration of the internal structure of the corneal tissue and sometimes is progressive, especially in young people. Anatomically, the main signs of keratoconus are thinning of the cornea in its central or paracentral region, usually accompanied by an increase in this part of a high irregular astigmatism, with a consequent loss of vision. Its diagnosis requires a thorough study including the family history, a complete ophthalmologic examination and imaging studies. This diagnosis allows classifying the type of keratoconus, which allow determining options of management, with what it is possible to establish a visual prognosis of each eye. One of the indicators that help in the diagnosis of keratoconus is an inherited familiar propensity. The literature reports an incidence of keratoconus of 11%1 in first-degree relatives of patients with keratoconus. Results suggest an ethnic dependence, which implies that the knowledge of the tendency of keratoconus in the Mexican population is important. In this work, we present the preliminary results of the study realized to a group of relatives of patients who underwent corneal transplant by advanced keratoconus using Orbscan II topographic diagnosis, to determine the predisposition to Keratoconus in this group.e","PeriodicalId":359625,"journal":{"name":"Symposium on Optics in Industry","volume":"122 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":"115921542","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

Optics in the nanoscale limit for optoelectronics and biophotonics 光电子学和生物光子学的纳米尺度极限光学

Symposium on Optics in Industry Pub Date : 2011-09-24 DOI: 10.1117/12.915824

A. Neogi

{"title":"Optics in the nanoscale limit for optoelectronics and biophotonics","authors":"A. Neogi","doi":"10.1117/12.915824","DOIUrl":"https://doi.org/10.1117/12.915824","url":null,"abstract":"Contemporary optical effects and photonic component necessary for the realization of nanoscale integrated photonic circuit for developing lab-on-a-chipincluding light sources, detectors and filters is summarized. We present the concept of a lab-on-a-chip for the next generation optoelectronics and biophotonic industry including novel nanoscale material systems for lasers and detectors. Using principles such as plasmonics and near-field optics highly efficient nano-photonic lasers or modulators can be realized. The light source can be tuned from the UV to the visible range using ion implantation of noble metal such as Ag or Au in Silicon or silica. The presence of Ag or Ag nanoparticles can result in a significant enhancement of the light emission in the UV, green or red wavelength regime. Novel molecular electronics materials has been used to design olegonucleotide based photodetectors on transparent substrates for the detection of analytes in an all-optical system. Either a transparent GaN semiconductor or glass can be used as an substrate. Hybrid photonic crystal based microfluidic channels synthesized using hydrogel material can be optimized to control the flow of fluid using light. In this paper, the device components developed at the University of North Texas will be presented for the realization of a lab-on-a-chip.","PeriodicalId":359625,"journal":{"name":"Symposium on Optics in Industry","volume":"76 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":"124262269","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

Effective detection plane location uncertainty component in luxmeters calibration 光谱仪标定中检测平面位置不确定度分量的有效方法

Symposium on Optics in Industry Pub Date : 2011-09-24 DOI: 10.1117/12.910306

R. López-Ramírez, L. González-Galván, A. Estrada-Hernández, E. Rosas

引用次数: 2

Traffic infrastructure inventory system by analysis image 基于图像分析的交通基础设施库存系统

Symposium on Optics in Industry Pub Date : 2011-09-24 DOI: 10.1117/12.912181

Aldo I. Rico Martinez, J. C. Camarillo-Paz, F. Ornelas-Rodriguez, José-Joel González-Barbosa, Yazmín C. Peña Cheng, J. Hurtado-Ramos

引用次数: 0

Monte Carlo method for evaluation of uncertainty in topometry by using in-plane electronic speckle pattern interferometry with divergent illumination 发散照明平面内电子散斑干涉测量地形测量不确定度的蒙特卡罗评定方法

Symposium on Optics in Industry Pub Date : 2011-09-24 DOI: 10.1117/12.911931

Amalia G. Martinez, J. Parra-Michel, R. Cordero, J. Rayas