折射面是两个球面，或者一个是球面另一个是平面的透明体，叫做透镜．一般可将透镜分为凸透镜和凹透镜两类．历史上研究得较多的属凸透镜，关于透镜的起源，因为烧制玻璃最早的是阿拉伯人，因此科学界公认透镜也是由阿拉伯人首先发明的．我国研究透镜的历史比较长，早在春秋战 The refraction surface is two spheres, or one is a spherical surface and the other is a planar transparent body called a lens. Generally, the lens can be divided into convex lens and concave lens. In history, there are more convex lenses that are concerned about the origin of the lens. Since the earliest glass was burned by Arabs, it was recognized by the scientific community that the lens was first invented by Arabs. The history of research lens in our country is relatively long, early in the spring and autumn war