在讨论几何光学中的物象关系的时候,必须正确应用符号法则。我们感到,应用符号法则时所出现的错误,尽管与对符号法则还不够熟悉有关,但主要还是由于对“物”、“象”概念不够明确。本文仅就“物”、“象”概念提出几点注释和辨异,供参考。为突出所讨论的问题,拟在理想成象的范围内展开问题,不去涉及象差等其他问题。光学中的“物”“象”有着明确的物理意义, In discussing the object-image relationship in geometrical optics, it is necessary to apply the symbol rule correctly. We feel that the mistakes made when applying the law of symbols, even though they are not familiar with the rules of symbols, are mainly due to the fact that the concepts of “objects” and “images” are not clear enough. This article only puts forward some notes and differences on the concepts of “object” and “image” for reference. In order to highlight the issues under discussion, it is proposed to develop problems within the scope of ideal imaging, not to involve other issues such as aberrations. The “object” and “image” in optics have a clear physical meaning.