激光粒度仪中的短筒功率谱采集物镜设计  

Design of Compact Power Collection Lens for the Laser Diffraction Particle Size Analyzer

作　　者：陈希明[1] 张以谟[1] 王涌天[1] 刘巍然[1] 葛宝臻[1] 魏耀林[1] 

机构地区：[1]电子信息技术科学教育部重点实验室,天津大学现代光学仪器研究所,天津300072

出　　处：《天津大学学报（自然科学与工程技术版）》2002年第5期567-570,共4页Journal of Tianjin University：Science and Technology

基　　金：光电信息技术科学教育部重点实验室访问学者基金资助项目;国家自然科学基金资助项目 (5990 70 0 2 )

摘　　要：为了满足测粒范围要求 ,光学衍射式激光粒度仪需要配备多种焦距透镜 ,其中长焦距透镜会使仪器结构庞大 提出一种正负结构的远距型功率谱采集透镜设计方案 ,其中前组固定 ,更换后组透镜实现焦距F 5 0 0、F 80 0和F 10 0 0的变化 ,系统筒长小于 6 0 0mm ,并给出设计结果In order to meet the requirements of the range of particle sizes,the laser particle size analyzer by light diffraction needs the lenses with various focus-length,but the long focus-length lens make the instrument to be larger sizes.In the paper, a tele-photo lens structure as a power spectrum collection Lens(PSCL)with positive and negative lenses is proposed.In this system the focal length of the former lens is fixed,the focal length of later lens can be changed to realize the focus-length of F500,F800 and F1000.The length of the optical system is no more than 600mm.The designed results are given. This series lenses can be applied to various focus length and shorten the length of the whole system.

关 键 词：激光粒度仪 短筒功率谱 采集物镜 傅里叶变换透镜 光学设计 远距型透镜 结构设计 颗粒检测 

分 类 号：TH744.5[机械工程—光学工程]