最后，通过薄凸透镜的反射成象原理和逆向光路的计算，推导出测量薄凸透镜的光学参量的简便方法。

At last, from the reflection imaging theory and the calculating method of the converse light route, this test deduces the easy way to measure thin convex lens's optics parameter.

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最后，通过薄凸透镜的反射成象原理和逆向光路的计算，推导出测量薄凸透镜的光学参量的简便方法。

At last, from the reflection imaging theory and the calculating method of the converse light route, this text deduces the easy way to measure this convex lens's optics parameter.

youdao