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浏览/检索结果: 共7条，第1-7条 帮助 限定条件 发表日期：2008    专题：长春光学精密机械与物理研究所    第一署名单位    第一作者单位    通讯作者单位     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 大型光电跟踪设备数据通讯的网络化研究 学位论文 硕士, 长春光学精密机械与物理所: 中国科学院长春光学精密机械与物理所, 2008 李静 收藏  |  浏览/下载：59/0  |  提交时间：2012/03/21 光电经纬仪  CAN总线  数据通信  网络时延  实时性   针对亚微米-纳米尺度微区分析的高能X射线组合透镜研究 学位论文 长春光学精密机械与物理所: 中国科学院长春光学精密机械与物理所, 2008 作者:  黄鑫华 收藏  |  浏览/下载：10/0  |  提交时间：2012/03/21 Xcrls  X射线微束  背面曝光  沙漏状x射线组合透镜   Gel-Casting of Large-Scale Lightweight SiC Mirror Blank 期刊论文 Rare Metal Materials and Engineering, 2008, 卷号: 37, 页码: 678-681 Zhang G.; Zhao R. C.; Zhao W. X. 收藏  |  浏览/下载：16/0  |  提交时间：2012/10/21 Large-scale fabrication of Pr3+ doped or undoped nanosized ATiO(3) (A = Ca, Sr, Ba) with different shapes via a facile solvothermal technique 期刊论文 Crystal Growth & Design, 2008, 卷号: 8, 期号: 3, 页码: 779-781 Zhang X. M.; Zhang J. H.; Jin Y.; Zhao H. F.; Wang X. J. 收藏  |  浏览/下载：22/0  |  提交时间：2012/10/21 Mean shift tracking combining SIFT (EI CONFERENCE) 会议论文 2008 9th International Conference on Signal Processing, ICSP 2008, October 26, 2008 - October 29, 2008, Beijing, China Chen A.-H.; Zhu M.; Wang Y.-H.; Xue C. 收藏  |  浏览/下载：55/0  |  提交时间：2013/03/25 A novel visual tracking algorithm to cope with occlusion and scale variation is proposed. This method combines mean shift and SIFT algorithm to track object. SIFT algorithm is invariant to rotation  translation and scale variation. But it is a timeconsuming algorithm. The wasting time is related to image size. So the proposed algorithm first adopts mean shift to initially locate object position  then SIFT operator is used to detect features in object area and model area  lastly  the proposed method matches features in these two areas and calculates the relationship between them using affine transform. According to affine transform parameters  the state of object can be adjusted in time. In order to reduce process time  an improved feature matching algorithm is proposed in this paper. Experiments show that the proposed algorithm deals with occlusion successfully and can adjust object size in time. 2008 IEEE.   808nm high-power high-efficiency GaAsP/GaInP laser bars (EI CONFERENCE) 会议论文 Optoelectronic Materials and Devices III, October 27, 2008 - October 30, 2008, Hangzhou, China Wang Y.; Yang Y.; Qin L.; Wang C.; Yao D.; Liu Y.; Wang L. 收藏  |  浏览/下载：15/0  |  提交时间：2013/03/25 808nm high power diode lasers  which is rapidly maturing technology technically and commercially since the introduction in 1999 of complete kilowatt-scale diode laser systems  have important applications in the fields of industry and pumping solid-state lasers (DPSSL). High power and high power conversion efficiency are extremely important in diode lasers  and they could lead to new applications where space  weight and electrical power are critical. High efficiency devices generate less waste heat  which means less strain on the cooling system and more tolerance to thermal conductivity variation  a lower junction temperature and longer lifetimes. Diode lasers with Al-free materials have superior power conversion efficiency compared with conventional AlGaAs/GaAs devices because of their lower differential series resistance and higher thermal conductivity. 808nm GaAsP/GalnP broad-waveguide emitting diode laser bars with 1mm cavity length have been fabricated. The peak power can reach to 100.9W at 106.5A at quasicontinuous wave operation (200s  1000Hz). The maximum power conversion efficiency is 57.38%. Based on these high power laser bars  we fabricate a 1 3 arrays  the maximum power is 64.3 W in continuous wave mode when the current is 25.0A. And the threshold current is 5.9A  the slope efficiency is 3.37 W/A. 2008 SPIE.   Design of optical elements for imaging the earth's plasmasphere (EI CONFERENCE) 会议论文 International Symposium on Photoelectronic Detection and Imaging, ISPDI 2007: Optoelectronic System Design, Manufacturing, and Testings, September 9, 2007 - September 12, 2007, Beijing, China Wang L.-H.; Wang X.-K.; Chen B. 收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25 Studying the distribution of He+ in Earth's plasmasphere by detecting its resonantly-scattered emission at 304A will record the structure and dynamics of the cold plasma in Earth's plasmasphere on a global scale. EUV imaging systems usually utilizes near normal incidence optics including multilayer mirror and filter. In this paper  the space condition of the Earth's plasmasphere to confirm the expected performance of mirror and filter for this task were analyzed and some guidelines for the design of the optical elements were introduced. In order to achieve higher response at 304A and reduce 584A radiation for the optical system  a new multilayer coating of Mo/Si with UOx (x=2-3) was developed  and it is indicated that promising filter material is Al/C with a nickel mesh. In addition  we compute the reflectance of multilayer mirror based on optical constants and the transmission of the filter based on atomic scattering factor. The results show the multilayer mirror has high reflectance of 26.27% at 304 Aand low reflectance of 0.60% at 584A. Finally  the conversion efficiency of mirror coupled with filter is 6.88% at 304A and 0.01% at 584 A.