平面棱镜系统成像方向的追迹模拟

Tracking simulation of imaging direction by prism systems

为了清晰说明平面棱镜系统成像方向的判定方法,推导了光在非共轴光学系统的追迹公式,对平面棱镜系统的物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.

In order to clearly explain the method for judging the imaging direction of prism system,the raytracing 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.