愚人 发表于 2004-9-13 19:49:00

大家帮着看看这个镜头



<img src="data/attachment/forum/dvbbs/2004-9/2004913114929193.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/2004-9/2004913114929193.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />



愚人 发表于 2004-9-13 19:50:00



<img src="data/attachment/forum/dvbbs/2004-9/2004913115020905.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/2004-9/2004913115020905.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />



愚人 发表于 2004-9-13 19:50:00



<img src="data/attachment/forum/dvbbs/2004-9/2004913115055692.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/2004-9/2004913115055692.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />



愚人 发表于 2004-9-13 19:51:00



<img src="data/attachment/forum/dvbbs/2004-9/2004913115147809.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/2004-9/2004913115147809.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />



愚人 发表于 2004-9-13 19:58:00



<P>自己感觉这个透镜优化出来怪怪的，第一片是成了负透镜，</P><P>焦距5.42mm,F#=6.5</P>



simem 发表于 2004-9-13 20:39:00

<P>楼主是直接用MTF优化的吧，权值设的太高会出现这样的问题。</P>

愚人 发表于 2004-9-13 21:13:00

<P>的确是用MTF直接优化的，这个结构加工出来有问题吗？</P>

simem 发表于 2004-9-13 21:39:00

这样的结果加工出来后边缘视场会不好，弥散斑太大。

愚人 发表于 2004-9-13 23:05:00

<P>我的想法是：像质完全可以用MTF来反映（除了畸变和照度），</P><P>既然边缘视场的MTF值不低，像质应该能够接受。</P><P>不知道对否。</P>

redflag 发表于 2004-9-13 23:23:00

如果公差没有问题,那就没有问题.MTF还是比较准的.但是对有特殊要求的就不一定适用了.如SPOT.

zhouxiaojun 发表于 2004-9-14 01:21:00

<P>这个系统的相对孔径不大</P><P>点列图的效果不好</P>

lwjxtgd 发表于 2004-9-14 04:40:00

弥散班偏大，传函结果有问题
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