本刊 2 0 0 3年第 3期登载了《凸透镜的“直视像”》一文 (以下简称《原文》) ,笔者读后认为 ,《原文》作者在文中用横向放大率公式等知识来讨论凸透镜“直视像”的做法是不妥的 ,现在此提出商榷 .众所周知 ,一物体的表观尺寸是由它在视网膜上所成像的大小来决定的 .如果用肉眼 In the 3rd issue of 2003, we published the article “Homogeneous Image of Convex Lens” (hereinafter referred to as “the original”). After reading this article, the author thinks that the author of the “original” text used the knowledge of the lateral magnification formula in the article to discuss it. Convex lens “looking straight” as the practice is not appropriate, and now it is proposed to discuss. As we all know, the apparent size of an object is determined by the size of its image on the retina. If you use the naked eye