基于GRIN透镜微小角位移的测量技术研究  

Research on Measurement of Microangular Displacement Based on GRIN Lens

作　　者：吕洪发[1] 王惠南[1] 

机构地区：[1]南京航空航天大学生物医学工程系,南京210016

出　　处：《光子学报》2006年第12期1846-1849,共4页Acta Photonica Sinica

基　　金：航空基础学科基金资助

摘　　要：根据1/2波节自聚焦(GRIN)透镜中光的传输特性,提出了一种新颖的测量微小角位移的模型,通过对模型中光线传输和几何关系的理论分析,推导了待测角位移与光耦合效率之间的传递函数·针对模型对测量范围的限制,提出了一种可行的拓宽测量范围的方法·研究结果表明,该模型不但测量范围宽,而且测量准确度高,线性度好·A characteristic to the coupli parameter of reformed method for detecting microangular displacement was proposed accordi of the half-wavelength GRIN lens. The transfer function from the microangular dis ng efficiency was deduced by analyzing the the model. Considering the limit to measure n P g to the lacement transmission of the beam and the geometrical range of the model, a feasible method was also proposed. The result of the research indicates that this model not only has a wide measure range, but also has a high precision with good linearity.

关 键 词：GRIN透镜 角位移 模型设计 测量范围 

分 类 号：TH741.2[机械工程—光学工程]