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单词 Optical distance
释义

Optical distance

中文百科

光程 Optical path length

(重定向自Optical distance)

光程(英语:Optical path length)是指在均匀介质中,光行径的几何路径的长度 s 与光在该介质中的折射率 n 的乘积,用 Δ 表示,即:

\Delta = ns

两条光线光程的差值叫做光程差。光程的重要性在于确定光的相位,相位决定光的干涉和衍射行为。

英语百科

Optical path length 光程

(重定向自Optical distance)

In optics, optical path length (OPL) or optical distance is the product of the geometric length of the path light follows through the system, and the index of refraction of the medium through which it propagates. A difference in optical path length between two paths is often called the optical path difference (OPD). Optical path length is important because it determines the phase of the light and governs interference and diffraction of light as it propagates.

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更新时间:2025/6/18 8:39:03