光学黑箱问题在物理竞赛及中考中时常出现 ,为广大师生所关注 .1　解决光学黑箱问题首先要搞清以下两个问题(1)中学阶段所接触的光学元件 (玻璃镜子 )有五种 :平面镜、凸镜、凹镜、凸透镜和凹透镜 .前三种都是面镜 ,遵从光的反射规律 ;后两种为透镜 ,遵从光的折射规律 .光线不? The problem of optical black box often appears in the physics competition and in the Chinese exam. It is the concern of the teachers and students. 1 First, the following two problems should be solved when solving the optical black box problem. (1) There are five types of optical components (glass mirrors) that are in contact during the middle school period: Plane mirrors, convex mirrors, concave mirrors, convex lenses, and concave lenses. The first three are all mirrors that obey the law of light reflection; the latter two are lenses that obey the law of light refraction. Light does not?