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<P ><FONT size=3>一点光源前摆一透镜,小弟希望其打出来的光线为平行光,假设点光源与透镜距离固定,请问小弟该如何设定优化程序,以求的透镜规格<FONT face="Times New Roman">?</FONT></FONT></P>
<P ><p><FONT face="Times New Roman" size=3> </FONT></p></P>
<P ><FONT size=3>小弟是新手,请各位先进赐教。</FONT><p></p></P><img src="data/attachment/forum/dvbbs/2004-5/200451813587662.gif" 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/2004-5/200451813587662.gif\');}" onmousewheel="return imgzoom(this);" alt="" />
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