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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=62" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></div> <h1 class="ph">镜头透过率/反射率测试解决方案 </h1> <p class="xg1"> 时间：2018-8-17 15:13<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(1125)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=6958&idtype=aid" title="查看全部评论"><em id="_commentnum">6</em></a></p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=62" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>镜头由于尺寸和形状各异，导致它们很难测试。很多情况下，工程师通过测试陪镀片以间接得到镜头的透过率和反射率特性，由于镀膜条件不同，陪镀片和镜头的特性可能存在差异，并且由于镀膜技术和工艺的问题，镜头表面不 ...</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><div> 镜头由于尺寸和形状各异，导致它们很难<a href="http://opticaltest.oecr.com" target="_blank" class="relatedlink">测试</a>。很多情况下，工程师通过测试陪镀片以间接得到镜头的透过率和反射率特性，由于<a href="http://opticalfilm.oecr.com" target="_blank" class="relatedlink">镀膜</a>条件不同，陪镀片和镜头的特性可能存在差异，并且由于镀膜技术和<a href="http://optics.oecr.com" target="_blank" class="relatedlink">工艺</a>的问题，镜头表面不同点的特性可能有所不同。</div><div><br></div><div> 白俄罗斯EssentOptics公司的Linza150分光光度计提供了优秀的解决方案，其采用氘灯和卤钨灯光源，波段覆盖185-3500nm，采用切尔尼——特纳光谱仪结构，可以对镜头或镜头组进行轴上透过率测试，并对镜头表面的任意点进行反射率测试。反射率测试时，镜头的最大倾斜角为60°，入射光线角度为12°。</div><div><br></div><div><p style="text-align: center;"><a href="data/attachment/portal/201808/17/151117pmt44z8tq57phq48.png" target="_blank"><img src="data/attachment/portal/201808/17/151117pmt44z8tq57phq48.png"></a></p></div><div style="text-align: center;"><br></div><div style="text-align: center;"> 图1 Linza150分光光度计</div><div><br></div><div><p style="text-align: center;"><a href="data/attachment/portal/201808/17/151150hcaieih8rff2iyir.jpg" target="_blank"><img src="data/attachment/portal/201808/17/151150hcaieih8rff2iyir.jpg"></a></p></div><div><br></div><div><p style="text-align: center;"><a href="data/attachment/portal/201808/17/151210thccu21lcq8x4q7f.png" target="_blank"><img src="data/attachment/portal/201808/17/151210thccu21lcq8x4q7f.png"></a></p></div><div style="text-align: center;"> 图4 反射率测试光路图</div><div><br></div><div style="text-align: center;"> <a href="data/attachment/portal/201808/17/151232uors7kmzsaafhrsb.png" target="_blank"><img src="data/attachment/portal/201808/17/151232uors7kmzsaafhrsb.png"></a></div><div><br></div><div style="text-align: center;">图5 反射率测试夹具图</div><div><br></div><div> 实测案例</div><div><br></div><div> 一位客户要求测试三个物镜的透过率，物镜参数：焦距：12mm 通光孔径：9mm 全长：22mm。通常Linza150能够测试的镜头焦距范围为-20mm——∞/20mm——∞，通光孔径范围为＞8mm。而这组物镜的焦距和通光孔径都特别小，导致无法将所有的透过光入射到探测器上。</div><div><br></div><div> 解决方案：EssentOptics的工程师提出了同时测试两个物镜的方案，将这两个物镜组成无焦系统(见图6)</div><div><br></div><div><p style="text-align: center;"><a href="data/attachment/portal/201808/17/151251jr14dd2o3zmmrm8f.png" target="_blank"><img src="data/attachment/portal/201808/17/151251jr14dd2o3zmmrm8f.png"></a></p></div><div style="text-align: center;"><br></div><div style="text-align: center;"> 图6 双物镜组成的无焦系统</div><div><br></div><div> 改方案可以使所有透过物镜的信号光能被探测器收集。根据物镜参数，工程师确定了两个物镜之间的距离。接着对三对物镜的透过率进行测试：T(1-2),T(2-3),T(1-3)。测试结果如下：</div><div><br></div><div><p style="text-align: center;"><a href="data/attachment/portal/201808/17/151307nn9zxonmzxieoxuu.png" target="_blank"><img src="data/attachment/portal/201808/17/151307nn9zxonmzxieoxuu.png"></a></p></div><div style="text-align: center;"><br></div><div style="text-align: center;"> 图7 三对物镜透过率曲线</div><div><br></div><div> 关于EssentOptics</div><div><br></div><div> EssentOptics是国际领先的镀膜检测设备提供商。<a href="http://b.oecr.com/sell" target="_blank" class="relatedlink">产品</a>主要包括：</div><div><br></div><div> Photon RT分光光度计：可覆盖185-5200nm波段，对平面光学元件及棱镜进行不同角度的透过率、反射率和偏振态测试，测试过程全自动进行。</div><div><br></div><div> Linza 150分光光度计：覆盖185-3500nm波段，可对镜头及镜头组进行轴上透过率测试，并可对镜头表面任意点进行反射率测试。</div><div><br></div><div> IRIS and AKRA IRIS and AKRA 镀膜检测系统：用于镀膜过程的监控。</div><div><br></div><div><p microsoft="" yahei",="" simsun;="" background-color:="" rgb(255,="" 255,="" 255);="" text-align:="" center;"="" center;="" 255);"="" style="text-align: center; word-wrap: normal; margin: 0px; padding: 0px; color: rgb(143, 143, 143); font-family: Tahoma, "Microsoft Yahei", Simsun; background-color: rgb(255, 255, 255);"><b style="word-wrap: normal;"><font 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</div> <input type="hidden" name="portal_referer" value="portal.php?mod=view&aid=6958#comment"> <input type="hidden" name="referer" value="portal.php?mod=view&aid=6958#comment" /> <input type="hidden" name="id" value="0" /> <input type="hidden" name="idtype" value="" /> <input type="hidden" name="aid" value="6958"> <input type="hidden" name="formhash" value="53cd914e"> <input type="hidden" name="replysubmit" value="true"> <input type="hidden" name="commentsubmit" value="true" /> <p class="ptn"><button type="submit" name="commentsubmit_btn" id="commentsubmit_btn" value="true" class="pn"><strong>评论</strong></button></p> </form> <a name="comment_anchor_19214"></a> <dl id="comment_19214_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(19214, '6958');">引用</a> </span> <a href="http://club.oecr.com/space-uid-117363.html" class="xi2 xw1" c="1">光明世界</a> <span class="xg1 xw0">2018-8-29 11:54</span> </dt> <dd>对曲率镜头，各点的反射率都不一样，很难控制吧</dd> </dl><a name="comment_anchor_19023"></a> <dl id="comment_19023_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(19023, '6958');">引用</a> </span> <a href="http://club.oecr.com/space-uid-17122.html" class="xi2 xw1" c="1">oldguner</a> <span class="xg1 xw0">2018-8-18 00:28</span> </dt> <dd>就看看，不说话！</dd> </dl><a name="comment_anchor_19019"></a> <dl id="comment_19019_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(19019, '6958');">引用</a> </span> <a href="http://club.oecr.com/space-uid-39194.html" class="xi2 xw1" c="1">Wind-0211</a> <span class="xg1 xw0">2018-8-17 22:28</span> </dt> <dd>想要的资料。</dd> </dl><a name="comment_anchor_19015"></a> <dl id="comment_19015_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(19015, '6958');">引用</a> </span> <a href="http://club.oecr.com/space-uid-74451.html" class="xi2 xw1" c="1">bloch</a> <span class="xg1 xw0">2018-8-17 20:28</span> </dt> <dd>oecr什么时候搞起来的？2001？</dd> </dl><a name="comment_anchor_19008"></a> <dl id="comment_19008_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(19008, '6958');">引用</a> </span> <a href="http://club.oecr.com/space-uid-97292.html" class="xi2 xw1" c="1">resin</a> <span class="xg1 xw0">2018-8-17 17:58</span> </dt> <dd>光电产业发展的很迅速。</dd> </dl><a name="comment_anchor_19007"></a> <dl id="comment_19007_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(19007, '6958');">引用</a> </span> <a href="http://club.oecr.com/space-uid-98164.html" class="xi2 xw1" c="1">qxk318</a> <span class="xg1 xw0">2018-8-17 17:28</span> </dt> <dd>看起来不错</dd> </dl></div> </div> <!--[diy=diycontentcomment]--><div id="diycontentcomment" 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