【摘要】 在高精度测量中,为达到测量精度要求,需要对CCD像素进行校准。本文介绍一种简单易行的采用标准分划尺校准CCD像素的方法。首先标准分划尺经过线纹工作基准装置校准;通过对标准分划尺成像,得出在一段标准距离下的像素数;最后得出每个像素所对应的实际距离。实验证明,这种方法能够有效地抑制综合误差,改善测量精度。更多还原

【Abstract】 During the high accurate measurement,it needs to calibrate the value of the CCD pixel in order to fit the accuracy required.In this paper a simple and convenient method for calibrating the CCD pixel with standard line-scale is introduced.The line-scale is calibrated by laser interferometer.We can get the number of pixel corresponding to a length of standard line-scale.Then we can get the real distance corresponding to every pixel.The results of the experiments show that this method can restrain the compositive error and improve the accuracy of measurement.更多还原