摘要:
对比分析了光学薄膜与声学中间层的增反和增透现象，提出了声程和声程差的概念，并通过声程差分析了声波垂直入射中间层的问题。分析表明：光学增反膜和增透膜与声学增反层和增透层的厚度与其中光波或声波的波长有相同的数学关系，光和声在通过中间层介质时具有对称的物理特性，从而使得光学薄膜与声学中间层又具有对称性的实际应用。
The phenomenon of increased reflection and increased transmission bath of optical film and acoustic middle layer was compared and analyzed. The concept sound path and sound path difference was proposed, and through the sound path difference, the acoustic middle layer problem was analyzed. Analysis shows that the mathematical relationships between the thickness and the wavelength are the same in bath of optical film and acoustic middle layer. The physical properties of light and sound are symmetrical when they pass through the middle layer. And the practical application of optical film and acoustic middle layer is also symmetrical.