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onload="thumbImg(this)" border="0" alt="" /><br /> <br /> 小弟要设计一组扩束镜，用于学校的zygo干涉仪上，把4英寸的平行光，扩束为8英寸的平行光。已知条件如图（另：最后一个面的半径为无穷大），请问应该如何设计这组扩束镜，如何用CODEＶ优化。<br /> 假如笔算出每个面的大概半径，输入到的CODEV 中，对于CODEV中的自动优化菜单中，应该如果设定条件，来保证自动优化出来的光线是8英寸的平行光和相差很小，并且还要保证光线反向时（从8英寸向4英寸方向）相差也很小<br /> <br /> <br /> <br /> </div> <div class="postmsg"><br /> <br /> <<img src="static/image/smiley/default/titter.gif" smilieid="9" border="0" alt="" />>提几点自己的看法：</P><br /> <<img src="static/image/smiley/default/titter.gif" smilieid="9" border="0" alt="" />>1.为什么最后一个面的半径为无穷大（即是平面），有什么特殊的要求？</P><br /> <<img src="static/image/smiley/default/titter.gif" smilieid="9" border="0" alt="" />>2.一定要用CODE V做吗？ZEMAX是可以做出这样的扩束系统的。</P><br /> <<img src="static/image/smiley/default/titter.gif" smilieid="9" border="0" alt="" />>3.有没有长度的要求？如果是500MM ，那么我估计目镜一片就可以，如果最后一个面的半径不是为无穷大，那么物镜一片估计也是可以的。如果对长度的要求比较严格，那么考虑用发射式来做。</P><br /> <<img src="static/image/smiley/default/titter.gif" smilieid="9" border="0" alt="" />>4.对于玻璃的材料有没有什么要求？如果没有尝试用K9，镀膜的牢固程度是很好的，这个是考虑工艺性了。</P><br /> <br /> <br /> <br /> </div> <div class="postmsg"><br /> <br /> 1.这组扩束镜用于zygo公司的菲索Fizeau干涉仪上（GPI系列，原理在http://zygo.com.cn/products/gpi/）用于分析光学器件表面质量等，教授给我的课题中要求最后一个面是菲索平面。<br /> <br /> 2.学校里面目前只教过CodeV，因在国外，学codeV时是英文授课，学的不是太精通，如果zemax不是正版的，在这边是绝对不能使用的，是违反法律的，国外人比较死板，对版权看的很重，学校里面都用的是正版的要用解密狗的codeV，目前我使用的是最新的code V9.60版本。<br /> <br /> 3，500mm也只是拿尺子在干涉仪上测量的两组透镜放置的大致距离，当然不要求两组透镜的距离一定是500mm。另外不一定要两负两正的透镜组，一负一正也行。只要达到4英寸扩束到8英寸，像差小，满足菲索原理，用于分析更大面积光学器件表面质量的目的。你说的目镜一片，物镜一片，和发射式我不太明白。<br /> <br /> 4。这边玻璃选材，都是用的schott公司的产品。教授让我用BK7 或NSF57这两种材料分别设计比较一下，目前只是要求用软件设计，暂时不考虑镀膜等工艺<br /> 联系qq：483436<br /> <div align="right"><font color="#000066">[此贴子已经被作者于2005-11-24 18:16:59编辑过]</font></div><br /> <br /> <br /> <br /> </div> <div class="postmsg"><br /> <br /> <<img src="static/image/smiley/default/titter.gif" smilieid="9" border="0" alt="" />>很容易实现，考虑一个负透镜即可，主要约束轴上的球差就可优化到1/1000λ，</P><br /> <<img src="static/image/smiley/default/titter.gif" smilieid="9" border="0" alt="" />>且最后一个面是菲索平面即参考平面，</P><br /> <<img src="static/image/smiley/default/titter.gif" smilieid="9" border="0" alt="" />>材料用BK7（国内为K9）即可。</P><br /> <br /> <br /> <br /> </div> <div class="postmsg"><br /> <br /> 我已经得优化出来一个结果了，请大家帮我看看，是否满足设计要求。<br /> 存在一个问题是：光线完全平行入射，感觉这个结果还不错，但是如果以一个小角度入射，好像coma就变得很大，为什么<br /> <br /> 谢谢下面兄弟的提醒,现在已经更正成9.50版本可以运行的了<br /> <br /> <br /> <div align="right"><font color="#000066">[此贴子已经被作者于2005-11-18 5:00:22编辑过]</font></div><br /> <br /> <br /> <br /> </div> <div class="postmsg">你这个是9。6的文件吧，估计没几个人打的开。。。。。。<img src="static/image/smiley/default/em04.gif" smilieid="33" border="0" alt="" /></div> <div class="postmsg">现在已经更正了，谢谢，兄弟的提醒。请大家帮我看看了</div> <div class="postmsg">完了，我的CODE V9。5的还是打不开啊，怎么回事啊？</div> <div class="postmsg"><<img src="static/image/smiley/default/titter.gif" smilieid="9" border="0" alt="" />>优化的时候应该加上一个小的离轴场，否则实际应用时性能很容易大打折扣</P></div> <div class="postmsg"><<img src="static/image/smiley/default/titter.gif" smilieid="9" border="0" alt="" />>存在一个问题是：光线完全平行入射，感觉这个结果还不错，但是如果以一个小角度入射，好像coma就变得很大，为什么<BR></P><br /> <<img src="static/image/smiley/default/titter.gif" smilieid="9" border="0" alt="" />>你可以设一个很小的视场角。我试了一下，还可以。</P><br /> <<img src="static/image/smiley/default/titter.gif" smilieid="9" border="0" alt="" />>chenshi1967@163.com</P></div> <div class="postmsg">请问楼主所在地?我是天津的,我想用Zygo干涉仪测量薄膜的微形变,就近测量比较方便,因此问楼上几位知不知道天津或北京哪有这种仪器,谢谢!</div> <div style="height200px;"></div> <ul class="xl xl2 cl" style="border-top: 1px #cccccc dashed;margin:5px 0 ;padding-top:5px"> <dl><b> 同一主题资料:</b></dl> <dl style="margin:10px 1px;display:inline"><a href="attachcenter-page.html?aid=7460" title="mDPAig7U.jpg"><img src="data/attachment/forum/dvbbs/2005-11/2005111420492031083.jpg" alt="mDPAig7U.jpg" title="mDPAig7U.jpg" onload="javascript:if(this.width>130)this.width=130;"></a></dl> <dl class='icon'><img src="static/image/filetype/zip.gif" border="0" class="vm" alt="" /> <a href="attachcenter-page.html?aid=7473" 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