这种类型的望远镜称为反射望远镜，比折射望远镜更具有优势，后者需要用到两个透镜，而且会受到光学畸变效应的影响。
Such telescopes are called reflectors, and they offer major advantages over refractors, which use two lenses and suffer from optical distortion effects.
在薄透镜焦距测定实验的基础上，进一步讨论了折射反射系统成像的规律。
On the basis of thin-lens focal length measurement experiment, the imaging law of refraction-reflection system was further studied.
给出了一种利用透镜的球面反射像测量薄透镜的材料折射率的方法。
A method of surveying the index of refraction of thin lens material with the help of images made by spherical reflection is given.
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