机构

• 长春光学精密机械与物... [1]
• 上海光学精密机械研究... [1]

采集方式

• OAI收割 [2]

内容类型

• 会议论文 [1]
• 期刊论文 [1]

发表日期

• 2008 [1]
• 2006 [1]

学科主题

• 激光技术;激光物理与... [1]

筛选

浏览/检索结果: 共2条，第1-2条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Generating monoenergetic heavy-ion bunches with laser-induced electrostatic shocks 期刊论文  OAI收割 phys. rev. lett., 2008, 卷号: 101, 期号: 16, 页码: 164802 Ji Liangliang; 沈百飞; 张晓梅; Wang Fengchao; Jin Zhangyin; Li Xuemei; Wen Meng; Cary John R. 收藏  |  浏览/下载：759/56  |  提交时间：2009/09/18 Analytical modeling  Efficient  Electrostatic shocks  Ion layers  Laser accelerations  Light ions  Monoenergetic  Particle-in-cell  Target designs   Geometrical modulation transfer function of different active pixel of CMOS APS (EI CONFERENCE) 会议论文  OAI收割 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 2, 2005 - November 5, 2005, Zian, China 作者:  Li J.;  Liu J.;  Liu J.;  Liu J.;  Li J. 收藏  |  浏览/下载：25/0  |  提交时间：2013/03/25 The geometrical Modulation Transfer Function (MTF) of CMOS APS (active pixel sensor) is analyzed in this paper. Advanced APS have been designed and fabricated where different pixel shapes such as square  rectangle and L shape  were placed  because the amplifier circuit and other function circuits inter pixel of APS take up some pixel area. MTF is an important figure of merit in focal plane array imaging sensors. Research on analyzing the MTF for the proper pixel shape is currently in progress for a centroidal configuration of a target position. MTF will give us a more complete understanding of the tradeoffs opposed by the different pixel designs and by the signal processing conditions. Based on image sensor sampling and reconstructing model  the MTF expression of any active pixel shape has been deduced in this paper. According to actual pixel shape  three different active area pixels were analyzed  they were square  rectangle  and L shape  their Fill Factor (FF) is 30%  44% and 55%  respectively. Results of simulation experiments indicate that different pixel geometrical characteristics contribute significantly to the figures of their MTF. Different geometrical shape of active sensitive area of pixel and different station in pixel would influence MTF figures. The analysis results are important in designing better APS pixel and more important in analyzing imaging system performance of APS subpixel precision system.