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对透镜成像规律的讨论是比较繁杂的。直接利用成像公式先逐点探讨,然后列表格加以说明,乃是各类书籍上的常法,但显得机械,不易记忆;直接作出实物在透镜中多处位置的成像光路图,只能给出成像的大致印象,可以说,只是给人一种“初级认识”。在教学中,我考究着作出放大率相像距的关系图线(m—v图),发觉这图线能很全面、很形象地说明透镜
The discussion of the imaging law of the lens is complicated. Directly using imaging formulas to explore first, point by point, then the list grid to explain, but it is a common method on all kinds of books, but it seems mechanical, not easy to remember; directly make physical imaging path diagram in multiple positions in the lens, can only be given The general impression of imaging can be said to give people a “primary understanding.” In the teaching, I studied the relationship diagram (m-v diagram) of the magnification and image distance, and found that the graph can be very comprehensive and visually illustrating the lens.