高精度光学对准测量装置的设计

设计了一套光学对准测量装置，该装置主要由面阵CCD相机、光学镜头、图像处理模块、LED红光光源、球面反光镜组成。介绍了测量原理，测量目标采用等腰三角形排列，通过面阵CCD对目标所反射的图像进行采集，由图像处理模块对该图像进行实时处理，能够同时得到X、Y、Z以及旋转角度等四维坐标数据。推导了光斑图像坐标和被测平面距离等计算公式，并进行了对准精度分析。结果表明，该装置位置误差〈1mm，角度误差为0．24°，实现了高精度、自动、快速对准测量。

Design of high-precision optical measuring centering device

A set of optical measuring centering device is designed, which is composed of an area array CCD camera, an set of optical lens, image processing circuits, a red LED lamp-house, and a spherical surface reflector. The measuring principle of the device is introduced. The measuring objects are arranged in isosceles triangle, and the image of object is collected by a area array CCD and is processed in real time by the image processing circuits. At the same time, four dimension coordinate data(X,Y,X, and rotation angles) are calculated. The calculation expressions of the coordinate of spot image, the distance between the two planes and so on, are deduced and the measuring precision is analyzed. Experimental results indicate that the deviation of position is less than 1 mm and the deviation of angle is 0.24, which shows that the device can realize the high-precision, automatic and expeditiousness measurement.