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浏览/检索结果: 共9条，第1-9条 帮助

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A fatigue limit evaluation method based on plastic strain incremental energy dissipation theory 期刊论文  OAI收割
ENGINEERING FRACTURE MECHANICS, 2023, 卷号: 282, 页码: 109173
作者:  Zu, Ruili;  Zhu, Yingbin;  Huang XF(黄先富);  Huang, Yao;  Zhou, Yizhou
  |  收藏  |  浏览/下载：15/0  |  提交时间：2023/04/20
The magnesium nitrate hexahydrate with Ti4O7 composite phase change material for photo-thermal conversion and storage 期刊论文  OAI收割
Solar Energy, 2021, 卷号: 230, 页码: 462-469
作者:  Wang, Hui;  Ci, Enda;  Li, Xiaoqing;  Li, Jianqiang
  |  收藏  |  浏览/下载：0/0  |  提交时间：2023/06/21
Two-stream network for infrared and visible images fusion 期刊论文  OAI收割
Neurocomputing, 2021, 卷号: 460, 页码: 50-58
作者:  Liu, Luolin;  Chen, Mulin;  Xu, Mingliang;  Li, Xuelong
  |  收藏  |  浏览/下载：50/0  |  提交时间：2021/09/06
Day and Night Clouds Detection Using a Thermal-Infrared All-Sky-View Camera 期刊论文  OAI收割
REMOTE SENSING, 2021, 卷号: 13
作者:  Wang, Yiren;  Liu, Dong;  Xie, Wanyi;  Yang, Ming;  Gao, Zhenyu
  |  收藏  |  浏览/下载：38/0  |  提交时间：2021/06/15
Infrared thermal image of vapor-liquid interface in capillary microgroove heat sink 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 2011, 卷号: 50, 期号: 3, 页码: 274-279
作者:  Wang, Tao;  Hu, Xuegong;  Tang, Dawei;  Guo, Chaohong
收藏  |  浏览/下载：33/0  |  提交时间：2015/12/18
Design of reimaging F/1.0 long-wavelength infrared optical system (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, May 24, 2011 - May 24, 2011, Beijing, China
作者:  Zhang X.;  Zhang X.;  Zhang X.
收藏  |  浏览/下载：36/0  |  提交时间：2013/03/25
A reimaging F/1.0 long-wavelength infrared optical system is proposed. The design has a flexible opto-mechanical layout. The design process is as follows. Firstly  the catadioptric reimaging system consists of two reflecting mirrors and a relay lenses. Two reflecting mirrors make up of the first imaging system and are therefore free of chromatic aberrations  while low dispersion lenses were used in the reimaging system  so the optical system do not need achromatic design for a high image quality. Then  to correct high-order aberrations resulting from large relative aperture  more parameters need to be used with aspheric or diffractive surfaces due to modern optic technology development. Here  aspheric is selected for easily manufacture. Finally  the design is completed with the help of ZEMAX software. The effective focal length of the objective is 120mm and the field of view (FOV) is 4. The simulated final design shows adequate image quality and the modulation transfer function (MTF) is close to diffraction limit. The effect of the surrounding environmental temperature is analyzed using the concept of thermal defocusing  and the thermal compensation is discussed. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).  
Thermal difference analysis and athermalization design of infrared optical system (EI CONFERENCE) 会议论文  OAI收割
Optical Design and Testing IV, October 18, 2010 - October 20, 2010, Beijing, China
作者:  Zhang X.;  Zhang X.;  Zhang X.
收藏  |  浏览/下载：32/0  |  提交时间：2013/03/25
When infrared optical system works in a large temperature range  the thermal effect of optical lens and optical tube will produce image plane shift and lead to imaging quality deterioration. In order to eliminate the thermal aberration  the athermalization design principles of infrared optical system were introduced  and some commonly used methods of thermal difference compensation were described. Proceeding from single lens  the thermal difference caused by temperature changing was analyzed  and the relationship between temperature and focus shift was obtained. Considering optical tube thermal expansion  a set of equations to estimate the thermal difference of lens group was given. Finally  an infrared optical imaging system that can work under the temperature range of -40C to 60C was design according to athermal technique  in which a new mechanical passive temperature compensation was proposed. Through simulation  the athermalization design could make imaging plane shift the smallest. The simulation results coincided with the theoretical formula  and the design had reference value in engineering. 2010 Copyright SPIE - The International Society for Optical Engineering.  
Athermal design of hybrid refractive/harmonic diffractive optical system for far-infrared multi-band (EI CONFERENCE) 会议论文  OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, November 19, 2008 - November 21, 2008, Chengdu, China
作者:  Liu Y.;  Liu Y.;  Zhang H.;  Zhang H.;  Sun Q.
收藏  |  浏览/下载：29/0  |  提交时间：2013/03/25
In order to get enough information about the target  avoid big chromatic aberration as a result of wide spectrum and the complexity of optical system and adapt different special environment temperature  a hybrid refractive/harmonic diffractive optical system in far-infrared multi-band is described in the paper. This diffractive optical system has been designed an athermalized multi-band imaging system with harmonic diffractive element in 15-50m spectrum  based on larger 1dispersion capability and particular thermal dispersive power of harmonic diffractive element. Then  at the temperature range from 0C to 40C  this design can simultaneously meet with all requirements of the imaging system in five harmonic wave bands  including15.8-16.2m  18.5-20m  23-25m  30.5-33.5m and 46-50m. In each harmonic wave band  the magnification changes as a function of wavelength  which creates image registration error. To compensate this shortcoming  a zoom optical system is designed with three lenses by means of optical two- component method. The design results show that the hybrid refractive/harmonic diffractive optical system can realize athermalized and achromatic design  and the zoom optical system makes half image height at 3.53mm in every harmonic wave band and still realizes aberration compensation action. In the five harmonic wave bands  each optical transfer function approaches the diffraction limit at ambient temperature range of 0C to 40C. Finally  the system realizes the requirements of portability  mini-type and ease for fabrication. 2009 SPIE.  
Methodology research in exploring geothermal resources by using infrared remote sensing 会议论文  OAI收割
Proceedings of the 2009 2nd International Congress on Image and Signal Processing, CISP, Tianjin, China, 2009
Qiao; Yuliang1; Zhao; Shangmin2; Fang; Yue3
收藏  |  浏览/下载：24/0  |  提交时间：2011/08/23