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猫眼是一种使用普遍的光学器具,本文运用透镜成像的作图规律分析了猫眼的结构特点、猫眼和反猫眼原理以及用猫眼观察几乎没有死角的原因。
The cat’s eye is a kind of universal optical instrument. In this paper, the structural characteristics of the cat’s eye are analyzed by using the law of the imaging of the lens. The cat’s eye and anti-cat’s eye principle and the reason of almost no dead angle are observed with the cat’s eye.