两探测面结构激光粒度仪的接收光路设计  

Optical Receiver Design of Laser Particle Sizer with Two Detecting Planes

作　　者：魏永杰[1] 魏耀林[2] 葛宝臻[3] 

机构地区：[1]河北工业大学机械工程学院,天津300130 [2]天津大学精密仪器与光电子工程学院,天津300072 [3]天津大学光电信息技术科学教育部重点实验室,天津300072

出　　处：《中国粉体技术》2009年第1期8-10,共3页China Powder Science and Technology

基　　金：国家自然科学基金项目,编号:60527002。

摘　　要：为了扩大激光粒度仪测量的动态范围，采用同轴的两组接收透镜，将两个硅光电探测器阵列分别置于前组透镜的后焦面和两组透镜的组合后焦面上，对测量信号进行组合后用改进共轭梯度法处理数据。通过优化光路结构，采用两组双胶合透镜和探测环半径均不大于45mm的探测器可满足同时测量5-3500μm粒径的要求。In order to extend the measurable dynamic size range in laser particle size measurement, the two lenses were set coaxially were signals were detected on the back focal plane of the first lens and the combined back focal plane of the two sets of lenses at the same time. The data were processed after the detected signals combined. The two sets of lenses were both doublet and the radiuses of the detectors were all less than 45 mm. Particles in the size range of 5-3 500μm could be measured simultaneously by the presented sizer.

关 键 词：激光粒度测量 动态范围 光路设计 

分 类 号：TH741[机械工程—光学工程]