摘要
从改进斜入射斜接收式激光三角法的光路系统角度出发,提出了一种对液面反射光线采用线性光学放大的光路设计,将液面微小位移变化线性放大为光电检测器上的光点位移变化来提高液位检测分辨率。对曲面镜的线性放大原理进行了理论推导,介绍了线性放大曲面镜曲线函数表达式的数值计算方法以及计算机程序流程。仿真实验结果表明,该线性放大曲面镜可以实现线性放大功能,能够有效地提高激光三角液位检测系统的液位检测分辨率,同时可保证检测系统具有较小的非线性误差。该光路设计方法也可应用于具有位置线性放大的光学位置指示系统中。
With the idea to improve optical system of oblique incidence and oblique reception laser triangulation,a new linear amplification optical path design is put forward,which is applied in optical line detection of liquid level reflection.The design can raise the liquid level detection resolution,through amplifying linearly the small displacement of liquid level to light-spot displacement of photoelectric detector.The linear amplification principle of the curved mirror is derived theoretically,and numerical computational analysis methods and computer program flow of linear amplification curvilinear function expression of curved mirror are presented.The simulation experiment results indicate that the designed curved mirror can achieve linear amplification function,and the liquid level detection resolution of the laser triangulation liquid level detection system can be enhanced effectively with less nonlinearity error. The light path design method can also be used in the position linear magnification indication system.
出处
《光学技术》
CAS
CSCD
北大核心
2010年第6期803-806,共4页
Optical Technique
关键词
光学测量
激光三角法
线性放大
曲面镜
单晶炉
液位
optical measurement
laser triangulation
linear amplification
curved mirror
single crystal furnace
liquid level
