Abstract
A dotting lens is an auxiliary lens placed in front of the telescope of a focimeter. It images a dot on the center of the lens under test on the scale in the eyepiece. A hole in the dotting lens permits simultaneous meaurement of the sample.
摘要
点样透镜是一种放置在焦度计望远镜前方的辅助透镜。它将被测透镜中心的一个点成像在目镜中的刻度上。点样透镜上的一个孔允许同时测量样品。
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