各位大侠帮忙啊。我刚刚起步。<BR>我现在要设计一个微透镜的成像系统。<BR><img src="data/attachment/forum/dvbbs/2005-10/200510617125619041.bmp" 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/2005-10/200510617125619041.bmp\');}" onmousewheel="return imgzoom(this);" alt="" /><BR><BR><BR>最上面的透镜只知道厚度。<BR>下面各层都是其他的非玻璃材料，它们的厚度和折射率已知。<BR>要怎么做啊？？？<BR>主要是下面各层的折射率在哪设置？<BR>谢谢