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物和像是光学中两个最基本而重要的概念。学习中,学生常存在不少模糊认识,影响几何光学的学习。本文从四个方面谈谈物和像的问题。 一、物和像的相对性 光学中的物和像有着明确的物理意义,与生活中的物像概念不全相同。光学中对像的概念是:自物点发出的光束,经光学系统后仍保持为单心光束,则这个出射光束的顶点称为光学系统对该物点成的像点。由概念可知,(1)通过光学系统才能得到像,并且这个光学
Things and images are two of the most basic and important concepts in optics. In learning, students often have a lot of vague understanding, which affects the study of geometric optics. This article talks about issues of matter and image from four aspects. First, the relativity of objects and images Optical objects and images have a clear physical meaning, not the same as the concept of objects in life. The concept of the object in optics is that the beam emitted from the object point remains a single-center beam after the optical system, and the vertex of this outgoing beam is called an image point made by the optical system to the object point. It is known from the concept that (1) images can be obtained through an optical system, and this optics