【摘要】 从光学系统的成像公式出法，研究光学系统中物和像的运动方向及运动快速率，并且用图示表示运动方向和运动速率，阐述物像运动关系的应用．更多还原

【Abstract】 Based on the imaging formular of optical system, the article discusses the direction and rate of the object - image motion concerning optical system, illustrated with detailed pictures to demonstrate the direction and rate of motion, and the application of the relation of object - image motion.更多还原