一、序言如被测物具有必要的面积,可调焦距的光学高温计,对物镜的移动和被测物的尺寸通常不考虑其影响,但是严格地评价时要考虑。误差的主要原因已有过报导。二、对测量距离影响的考察假定图1的组合透镜系统是可调焦距的光 A preface, such as the measured object has the necessary area, adjustable focal length of the optical pyrometer, the objective lens movement and the size of the measured object usually do not consider the impact, but the strict evaluation should be considered. The main reason for the error has been reported. Second, the impact on the measurement distance inspection Assuming the combined lens system of Figure 1 is the adjustable focus of the light