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球面镜和薄透镜是控制光路的主要光学设备,是光的反射现象和折射现象的具体应用。搞清楚球面镜和薄透镜在各种情形下所生成的象的位置和性质,对进一步理解光学仪器的构造和原理,有十分重要的意义。
The spherical lens and the thin lens are the main optical devices that control the optical path and are the specific application of light reflection phenomenon and refraction phenomenon. Understanding the position and nature of the image generated by spherical and thin lenses in various situations is of great importance for further understanding of the structure and principles of optical instruments.