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测定了长焦距摄影系统随环境温度均匀变化时的象面变化数据。实验结果表明:象面位置与温度成线性关系变化。在+30°—-30℃范围内分别测定了两台长焦距相机的象面随温度变化的线性方程,实验表明,同一型号相机随光学系统中各光学元件中心厚度及空气间隔值有微小差异,其象面——温度变化关系亦不同。实验还表明,理论计算值与实测结果有所差异,其差值随温度变化范围减小而减小,在0°～10℃范围内,理论计算与实测值的差值最小。
The data of the change of the image of the telephoto camera system with the uniform change of ambient temperature were measured. Experimental results show that the position of the image changes linearly with temperature. The linear equations of the two long focal length cameras with respect to temperature were measured at + 30 ° - 30 ° C. The experimental results show that there is a slight difference between the same type of camera and each optical element in the optical system. , Its image plane - the relationship between temperature changes are different. Experiments also show that the calculated values are different from the measured ones, and the difference decreases with the decrease of the temperature range. The difference between the theoretical calculation and the measured value is the smallest in the range of 0 ° ~ 10 ° C.