关于波相差的疑问，谢谢！

<> 关于Seidel Aberration 和 Zernike Polynomials 的问题。是不是前者是设计时计算用的？后者是测量时评估用的？ Seidel 多项式的系数W(ijk)应该如何计算呢？单位是波长还是长度？</P>
<>对于如图的斜平板，聚焦光束的汇聚孔径为NA，平板的折射率是n，这时在A面和B面的波相差应该不同吧？</P>
<>分别应该是多少？非常谢谢！</P><img src="data/attachment/forum/dvbbs/2004-4/200442193226513.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'data/attachment/forum/dvbbs/2004-4/200442193226513.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />