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class="quote"><blockquote><img src="static/image/smiley/default/em27.gif" smilieid="56" border="0" alt="" /><img src="static/image/smiley/default/shutup.gif" smilieid="121" border="0" alt="" />不清楚啊<br /> <font size="2"><font color="#999999">liuyiyuan8888 发表于 2009-3-30 15:38</font> <a href="http://bbs.oecr.com/redirect.php?goto=findpost&pid=537244&ptid=84758" target="_blank"><img id="aimg_YM4K5" onclick="zoom(this, this.src, 0, 0, 0)" class="zoom" src="static/image/common/back.gif" onmouseover="img_onmouseoverfunc(this)" onload="thumbImg(this)" border="0" alt="" /></a></font></blockquote></div><br /> 楼上的看不清？不会吧，挺清楚的！</div> <div class="postmsg">楼上还真幽默~<br /> 所说太浅，看不懂啊<br /> 只有这个图，木有文本么？</div> <div class="postmsg">一看楼上就是专业人士，文本传上来！</div> <div class="postmsg">文本已上传！期待答案啊！！！！<img src="static/image/smiley/default/victory.gif" smilieid="14" border="0" alt="" /></div> <div class="postmsg">为什么用两个棱镜呢？因为一个元件能力有限，图中很多元件用的都是两个！</div> <div class="postmsg">楼上的意思是那两个棱镜都是用于色散？</div> <div class="postmsg">1、Dual ND Filter Wheel Set，双波轮滤波装置，仅仅用于调节光强；上面装载的是中性滤波片，一般单波轮只能装载6片中性片，双波轮可以装载12片，打到更精细地调节效果。<br /> 2、Dispersion Prisms，棱镜对，用于补偿、调节色散；至于为什么用2个，因为一个不能够补偿色散啊；原理比较容易理解，画一个类似图中的棱镜对，自己按照折射定律画光线看看就知道这个结构可以正/负补偿色散的。</div> <div class="postmsg">我见过的用棱镜对补偿色散的结构是对角放置的，还不是像图中这样放置<br /> 图中的结构，我倒觉得是增加色散，便于观测分辨</div> <div class="postmsg"><div class="quote"><blockquote>我见过的用棱镜对补偿色散的结构是对角放置的，还不是像图中这样放置<br /> 图中的结构，我倒觉得是增加色散，便于观测分辨<br /> <font size="2"><font color="#999999">seayu 发表于 2009-4-2 23:08</font> <a href="http://bbs.oecr.com/redirect.php?goto=findpost&pid=538379&ptid=84758" target="_blank"><img id="aimg_DvP5X" onclick="zoom(this, this.src, 0, 0, 0)" class="zoom" src="static/image/common/back.gif" onmouseover="img_onmouseoverfunc(this)" onload="thumbImg(this)" border="0" alt="" /></a></font></blockquote></div><br /> <br /> 嗯，很可能是的<br /> 没看人家的文章，只看了装置图，不敢乱说</div> <img src="data/attachment/forum/month_0903/090327223603147c4ae4ddc2b6.jpg" alt="QQ截图未命名.jpg" title="QQ截图未命名.jpg" 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