中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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3-D Imaging Lidar Based on Miniaturized Streak Tube 期刊论文  OAI收割
MEASUREMENT SCIENCE REVIEW, 2023, 卷号: 23, 期号: 2, 页码: 80-85
作者:  
Tian, Liping;  Shen, Lingbin;  Xue, Yanhua;  Chen, Lin;  Chen, Ping
  |  收藏  |  浏览/下载:24/0  |  提交时间:2023/07/03
A multiple-slit streak tube imaging lidar and its detection ability analysis by flash lidar equation 期刊论文  OAI收割
optik, 2013, 卷号: 124, 期号: 3, 页码: 204-208
作者:  
Sun, Jianfeng;  Liu, Jinbo;  Wang, Qi
收藏  |  浏览/下载:26/0  |  提交时间:2015/11/09
Electron beam density study using a portable slit imaging system at the Shanghai Electron Beam Ion Trap 期刊论文  OAI收割
CHINESE PHYSICS B, 2011, 卷号: 20, 页码: 7
作者:  
Yang Yang;  Lu Di;  Fu Yun-Qing;  Yao Ke;  Chen Wei-Dong
  |  收藏  |  浏览/下载:22/0  |  提交时间:2018/05/31
Self Imaging technique for refocusing an aerospace camera (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Devices and Instruments, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Li W.;  Li W.;  Wang X.;  Wang X.;  Wang X.
收藏  |  浏览/下载:40/0  |  提交时间:2013/03/25
A novel auto-focusing technique using a self imaging approach is developed for an aerospace camera having large aperture and long focus. Its optical system consists of an emitting system  receiving system  and two penta-prisms. Emitting system has three parts: a light source  beamsplitter  and aim slit. The receiving system includes a field lens  two separate lenses  and CCD. Using two little penta-prisms instead of a large planar mirror makes the autofocus system simple and compact. CCD was used as photoelectric converting device. A defocused signal is acquired by measuring the change of the two slit self-images position imaged on the CCD. A simple and compact construction of the auto-focusing system was proposed. The algorithm to calculate the moving of the slit-self images position was analyzed in order to achieve subpixel position estimation. The results of the experiments show a 10m focusing precision. The system demonstrates high resolution  easy adjustment and high reliability.