可用于高速摄影脉冲氙灯的研究  

Research on Flash Lamps Usable to High Speed Photography

作　　者：黄春雷[1,2] 李海兵[1] 林文正[1] 胡丽丽[1] 

机构地区：[1]中国科学院上海光学精密机械研究所,上海201800 [2]中国科学院大学,北京100049

出　　处：《光子学报》2016年第1期167-172,共6页Acta Photonica Sinica

基　　金：国家自然科学基金(No.61177083)资助~~

摘　　要：为了研究储能电容初始电压、电极间距、充气压及灯管内径等条件对脉冲氙灯电流脉冲和发光脉冲的影响,在电极间距100~300mm、充气压13.33~53.32kPa、灯管内径6~12mm、储能电容初始电压1.75~4.25kV的条件下,分别测量了脉冲氙灯的电流脉冲和发光脉冲的变化状况。测量得到脉冲氙灯的电流脉冲宽度和发光脉冲宽度均在15~45μs之间。对比发现：储能电容初始电压较高有助于获得高峰值、窄脉宽且滞后时间短的电流脉冲;具有较高充气压或较长电极间距的脉冲氙灯其电流脉冲与发光脉冲的峰值较小、脉冲宽度较大,且发光脉冲滞后时间较长;较粗灯管内径虽然可以增加电流脉冲的峰值,但电流脉冲的宽度被增宽,发光脉冲峰值减小,发光脉冲宽度展宽,且延长了发光脉冲的滞后时间.In order to study the influence of the initial voltage, arc length, fill pressure and bore diameter of charging capacitor on current pulses and light pulses of the xenon flash lamps, at a pressure of 13.33~ 53.32kPa, the change of current pulses and light pulses were measured with the arc length of 100~ 300mm, the bore diameters of 6~ 12ram and the initial voltages in charging capacitor ranging from 1. 75kV to 4.25kV. It was found that the pulse widths of light pulse and current pulse change from 157s to 45~s. The result showed that with the higher voltage in charging capacitor, stronger peak current could be obtained, the width and delay of light pulses reduced. High fill pressure or long arc length can diminish the strength of peak light, expand the width of light pulses and extend the delay time. Although big bore diameter raises the peak current, it also expands the width of light pulses and diminishes the strength of peak light.

关 键 词：图像处理 高速摄影 脉冲氙灯 电流脉冲 光脉冲 脉冲宽度 滞后时间 

分 类 号：O432.11[机械工程—光学工程]