激光粒度仪光学系统设计方法  

Particle size analyzer′s optical system design

作　　者：于双双[1] 杜吉[1] 史宣 

机构地区：[1]天津津航技术物理研究所,天津300192

出　　处：《红外与激光工程》2014年第6期1735-1739,共5页Infrared and Laser Engineering

摘　　要：以米氏散射理论为依据,提出了一种可以提高激光粒度仪测量精度的光学系统设计方法。该方法设计激光粒度仪光学系统时,光阑位置在激光粒度仪测量区域内采用变焦方式,同时控制每个视场上光线、主光线和下光线在接收器件-环形光电探测器的位置,控制光阑位置变焦时每个视场上光线、主光线和下光线在接收器件位置,使测量区域内散射角相同的光线形成的弥散斑最小。光学系统对光线的会聚真实地体现了激光粒度仪的测量理论的物理意义,提高了激光粒度仪的测量精度。Based on Mie theory, an optical system design method was established which can improve the measurement accuracy of the particle size analyzer. In the particle size analyzer＇s optical system design process, the diaphragm within the measuring range of the sample cell used a zoom method, it not only constrained the reference rays trace data for every field point at the ring detector to make the spot diagrams minimum, but also constrained the reference rays trace data for every field point of each zoom position at the ring detector to make the spot diagrams minimum. The optical systerm converges rays, which truly reflects the physical meaning of the particle size analyzer＇s measurement theory, improves the measurement accuracy.

关 键 词：激光粒度仪 光学系统设计 米氏理论 CODE V 

分 类 号：TP311.1[自动化与计算机技术—计算机软件与理论]