Bilingual edition: English is preserved and Chinese follows each unit. Terminology uses the confirmed v20260916 glossary; automated semantic review remains traceable.
中英双语版:英文原文完整保留,中文紧随对应单元;术语采用 v20260916 确认表,自动语义审校结果可追溯。

Interference Condition for Thin Films

薄 films 的干涉条件
Thin films
薄 films
Fabry-Perot geometry
法布里-珀罗几何
Snell's law
斯涅尔定律
Index

Interference concepts
索引干涉概念
 
HyperPhysics***** Light and Vision
HyperPhysics ***** 光与视觉
R Nave
Go Back
返回





Reflection Phase Change

反射相位变化

Reflected light will experience a 180 degree phase change when it reflects from a medium of higher index of refraction and no phase change when it reflects from a medium of smaller index. Note below that the reflection when traveling from air at n=1 to oil at n = 1.4 experiences the phase change, but from oil to water at n = 1.33 there is no phase change. This phase change is important in the interference which occurs in thin films, the design of anti-reflection coatings, interference filters, and thin film mirrors.

反射光在从折射率较高的介质反射时会经历180度的相位变化,而在从折射率较低的介质反射时则没有相位变化。注意下面的情况:从空气(n=1)到油(n=1.4)反射时会发生相位变化,但从油(n=1.33)到水反射时则没有相位变化。这种相位变化在薄膜干涉、抗反射涂层设计、干涉滤光片和薄膜镜中非常重要。
Calculation for oil film
油膜计算
Air gap example
空气间隙示例
Index

Interference concepts

Reflection concepts
索引干涉概念 反射概念
 
HyperPhysics***** Light and Vision
HyperPhysics ***** 光与视觉
R Nave
Go Back
返回





Reflection Phase Change

反射相位变化

Reflected light will experience a 180 degree phase change when it reflects from a medium of higher index of refraction and no phase change when it reflects from a medium of smaller index. This phase change is important in the interference which occurs in thin films, the design of anti-reflection coatings, interference filters, and thin film mirrors.

当光从折射率较高的介质反射时,会经历180度的相位变化;而当光从折射率较低的介质反射时,则不会发生相位变化。这种相位变化在薄膜干涉、抗反射涂层设计、干涉滤光片以及薄膜镜中起着重要作用。
Oil film example
油膜示例
Index

Interference concepts

Reflection concepts
索引干涉概念 反射概念
 
HyperPhysics***** Light and Vision
HyperPhysics ***** 光与视觉
R Nave
Go Back
返回