International Conference on Photonics, Optics and Laser Technology最新文献_第7页

Development of Mid-IR Fiber Bundle for Thermal Imaging 热成像中红外光纤束的研制

International Conference on Photonics, Optics and Laser Technology Pub Date : 1900-01-01 DOI: 10.5220/0006639502590265

Andrea Ventura, J. Lousteau, F. B. Slimen, N. White, F. Poletti

引用次数: 0

Characterization of High Speed Optical Detectors for Purpose of OM4 Fibre Qualification: Selective Mode Detection 用于OM4光纤的高速光学探测器的特性鉴定:选择模式检测

International Conference on Photonics, Optics and Laser Technology Pub Date : 1900-01-01 DOI: 10.5220/0006541201410147

F. Achten, D. Molin

引用次数: 1

Resonant Tunnelling and Optical-mechanical Analogy - Overcoming of Blackout Problem 共振隧穿和光力学类比——克服停电问题

International Conference on Photonics, Optics and Laser Technology Pub Date : 1900-01-01 DOI: 10.5220/0006542901480154

A. Bogatskaya, N. Klenov, A. Popov

引用次数: 0

Transmitter Design Proposal for the BB84 Quantum Key Distribution Protocol using Polarization Modulated Vertical Cavity Surface-emitting Lasers 基于偏振调制垂直腔面发射激光器的BB84量子密钥分发协议发射机设计方案

International Conference on Photonics, Optics and Laser Technology Pub Date : 1900-01-01 DOI: 10.5220/0006638002520258

Ágoston Schranz, E. Udvary

引用次数: 1

Dielectric Relaxation and Photo-electromotive Force in Ge-Sb-Te/Si Structures Ge-Sb-Te/Si结构中的介电弛豫和光电动势

International Conference on Photonics, Optics and Laser Technology Pub Date : 1900-01-01 DOI: 10.5220/0009154201460150

R. A. Castro-Arata, M. Goryaev, A. Kononov, Y. Saito, P. Fons, J. Tominaga, N. Anisimova, A. Kolobov

引用次数: 0

High Speed Measurement in Spectral Drill using Q-plate and Camera 利用q板和相机对光谱钻头进行高速测量

International Conference on Photonics, Optics and Laser Technology Pub Date : 1900-01-01 DOI: 10.5220/0008959400970099

S. Ohno, K. Miyamoto, S. Hayashi, N. Sekine

引用次数: 0

Nonlinear Trapping and Interfering Modes in a Quasi-One-Dimensional Microcavity Laser 准一维微腔激光器的非线性俘获与干涉模式

International Conference on Photonics, Optics and Laser Technology Pub Date : 1900-01-01 DOI: 10.5220/0006637302420246

M. Pieczarka, C. Schneider, S. Höfling, G. Sȩk

引用次数: 0

BER based Assessment of Spectral and Energy Efficiency in a Two-tier Heterogeneous Network 基于误码率的两层异构网络频谱和能量效率评估

International Conference on Photonics, Optics and Laser Technology Pub Date : 1900-01-01 DOI: 10.5220/0010852600003121

Jasmin Musovic, Adriana Lipovac, V. Lipovac

引用次数: 0

Measuring Centers of Special Targets in Digital Still Images and Movie Frames: Approach and Evaluation 数字静止图像和电影帧中特殊目标的测量中心:方法与评价

International Conference on Photonics, Optics and Laser Technology Pub Date : 1900-01-01 DOI: 10.5220/0010392901360142

S. Takhirov

{"title":"Measuring Centers of Special Targets in Digital Still Images and Movie Frames: Approach and Evaluation","authors":"S. Takhirov","doi":"10.5220/0010392901360142","DOIUrl":"https://doi.org/10.5220/0010392901360142","url":null,"abstract":"Digital cameras are undergoing explosive developments. As a result, high-resolution digital cameras have become very affordable, especially with the latest growth in smart phone technologies. Hence, the usage of existing measuring technologies and the development of new measuring technologies utilizing digital cameras is in high demand. This paper utilizes special black and white patterns, the so-called targets, to measure the relative displacement between two points. The paper introduces a new approach in measuring the location of their centers that is based on best fitting the transition zones to straight lines. The intersection of these lines produces the location of the center with sub-pixel accuracy. A special experimental rig was designed and built to evaluate the approach and compare the measurements to those obtained by a conventional position transducer connected to a data acquisition system. In the first part of the paper, the accuracy of the position transducer and the experimental setup is discussed. It is shown that the accuracy of the setup is much greater than the measurement expected from the digital images. Based on this, it was used as a reference system to evaluate the approach. In the second half of the paper, the approach is evaluated based on monitoring two targets. One of them is fixed and serves as a reference point, whereas another one is floating. The latter can move along the linear bearing system axis, which is orthogonal to the axis of the camera lens. The displacements of the floating target in respect to the fixed target were measured by a position transducer connected to a data acquisition system. The relative displacement of the floating target is captured by the digital camera and is based on the current location of the floating and fixed targets. This paper shows adequate accuracy of the approach and provides recommendations on the ways of keeping it at high accuracy for practical applications in experimental earthquake engineering.","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114922962","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 on Multi-wavelength and Multi-beam Illumination for Improving Object Illumination Uniformity 提高物体照明均匀性的多波长多光束照明研究

International Conference on Photonics, Optics and Laser Technology Pub Date : 1900-01-01 DOI: 10.5220/0007356301200124

Quan Sun, Y. Ing, Yi Yang, B. Yan, Shaojun Du

{"title":"Research on Multi-wavelength and Multi-beam Illumination for Improving Object Illumination Uniformity","authors":"Quan Sun, Y. Ing, Yi Yang, B. Yan, Shaojun Du","doi":"10.5220/0007356301200124","DOIUrl":"https://doi.org/10.5220/0007356301200124","url":null,"abstract":"The imaging and tracking to the far dim objects in the air are usually difficult for detecting system to get their clear images and accurate positions, due to the objects neither emitting light nor reflecting sunlight. Using active laser illumination technology, the target will be illuminated and the echo intensity of target can be increased. The laser intensity spatial distribution on the target plane fluctuates usually remarkably due to the atmospheric turbulence and other causes, which will decrease image resolution and tracking accuracy in optical system. In this paper, we presented a method of using illumination with the supercontinuum spectrum laser beam combination to improve the effect of target illumination uniformity. As the atmosphere transmittance ratios differs with wavelength, we set up a multi-wavelength and multi-beam target illumination simulation system to represent the supercontinuum spectrum laser illumination effect. As the previous simulation results and the experimental results, which both reflect an improving effect of illumination uniformity significantly by increasing of the beam number. The illumination uniformity of single beam with multi-wavelength spectrum components was analyzed, and the simulation results of one single beam, three beams and six beams with 9 wavelength spectrum were compared, which showed that the illumination uniformity in target plane was improved with both the number of wavelength spectrum components and the number of beams increasing. It showed that multi-spectral multi-beam illumination had great advantages in improving illumination uniformity and the supercontinuum laser can be a good active illumination source.","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115598268","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