像坐标变化过程进行了模拟.通过棱镜对物像坐标变化过程的模拟，进一步说明了教科书中棱镜成像方向判定方法，结果显

示，模拟棱镜成像是理解棱镜成像方向判定方法最为直观可行的手段，不仅有利于学生理解这种判定方法，还可以促进学生

对这种判定方法的记忆.模拟过程还可以使学生深刻理解在课堂中不易理解的棱镜中各种术语定义.

formulas for non-coaxial optical systems are derived，and the imaging processes of plane prism system are

simulated. Through the imaging simulation of a spatial coordinate system，the places difficult to understand about

the judging method for the imaging direction are pointed out. The results show that imaging simulations of prisms are

the most intuitive and feasible method for understanding the imaging direction of prisms. It is not only helpful for

students to understand this judgment method，but also promotes students’keeping this judgment method in mind.

The simulation processes also enable students to profoundly understand various definitions，terms on prisms，which

are not easily understood in the classroom.