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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">眼镜反光防护涂层的工作原理 </h1> <p class="xg1"> 时间：2011-9-22 09:55<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(2844)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=2437&idtype=aid" title="查看全部评论"><em id="_commentnum">1</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>屈光眼镜和太阳镜普遍存在的一个问题是回眩光。回眩光是光射到镜片的背面后，又反射到您的眼睛里而产生的。抗反光防护（AR）涂层（抗反射涂层）的作用在于减少镜片对光的这种反射。</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">屈光眼镜和太阳镜普遍存在的一个问题是回眩光。回眩光是光射到镜片的背面后，又反射到您的眼睛里而产生的。抗反光防护（AR）涂层（抗反射涂层）的作用在于减少镜片对光的这种反射。糟糕的情况下，您甚至会在镜片里看到自己眼睛的镜像。类似于防刮伤涂层，AR涂层也是涂在镜片上的一层很硬的<a href="http://opticalfilm.oecr.com" target="_blank" class="relatedlink">薄膜</a>。抗反光防护涂层物质的折射率介于空气和玻璃之间。这使得薄膜内表面和外表面反射光的强度几乎是相等的。当薄膜的厚度约为光波波长的四分之一时，从薄膜内外表面分别反射出的光线会通过相消干扰互相抵消，从而最大程度地减少您看到的眩光。抗反光防护涂层也被涂在屈光隐形眼镜和一些太阳镜的前表面，以消除镜片反射强光所产生的“热点”。<p><a href="data/attachment/portal/201109/22/095432dx99x3hq3xmxcmx9.gif" target="_blank"><img src="data/attachment/portal/201109/22/095432dx99x3hq3xmxcmx9.gif"></a></p><br>制作一副高档太阳镜所采用的典型分层结构<br><br>除了AR涂层可以减轻镜片后表面反射的眩光外，还有几种途径可以减少或消除刺眼的光透过镜片。它们包括： <br>•有色眼镜——镜片的颜色决定了镜片所吸收光谱的范围。制造商使用不同的颜色来产生特定的使用效果。<br>•偏光眼镜——偏光滤镜通常是在透明的塑料或者玻璃表面涂上一层化学薄膜。通常，它所使用的化合物里的分子相互之间是自然平行排列的。当将它们均匀地涂在镜片上时，这些分子形成了微小的透镜，能够吸收所有与它们的排列方向相同的光。<br>•变色眼镜——如果太阳镜或者屈光眼镜在对着阳光时会变暗，则认为它们是对光反应变色的。变色眼镜是由Corning公司在上世纪60年代末开发的，并由Transitions公司在上世纪90年代推广使用。变色镜片的原理主要是依赖紫外线的一种特殊化学反应。<br> •反光眼镜——这些太阳镜的镜片上涂有一层非常稀薄的反光涂料，被称为半镀银表面。称其为“半镀银”是因为反射分子对玻璃的覆盖非常稀疏，制作这一单面透视镜只使用了制作不透明反射镜所需分子数量的一半。 <div><font color="#808080" size="2"><img src="http://www.oecr.com/xwb/images/bgimg/icon_logo.png"> 已同步至 <a href="http://ome.ac.cn/index.php?m=show&id=3360363422408391" target="_blank">update的微博</a></font></div></td></tr></table> <!--[diy=diycontentbottom]--><div id="diycontentbottom" class="area"></div><!--[/diy]--> <script src="data/cache/home.js?eOg" type="text/javascript"></script> <div id="click_div"><table cellpadding="0" cellspacing="0" 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