主要用于光学装置的精密调整和标定，特别适用于干涉光路等光程的 调整。
The collimator is mainly used for precisely adjusting and demarcating optical devices, particularly suitable for adjusting the optical distances of interference optical paths, etc.
本文讨论激光在折叠光路上传输时强度起伏、光束扩展、光束抖动和光程长度起伏等湍流效应的性质。
The properties of turbulent effects including intensity fluctuation, beam spread, spot quiver, and pathlength fluctuation of laser propagating through a folded Path are discussed.
用等光程方法，对棱镜折射率和色分辩本领公式两个公式给出一种新的推导方法。
With the method of equivalent optical path, the refracting power and dispersive power of the prism are derived.
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