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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=61" 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">光纤光谱仪从巨无霸到微型之转变 </h1> <p class="xg1"> 时间：2016-7-11 15:57<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(1932)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=4616&idtype=aid" title="查看全部评论"><em id="_commentnum">5</em></a></p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=61" 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>半个世纪以前，光谱仪还是笨重的实验室工具，“仅在过去十年左右的时间内，光谱仪器才脱离实验室的束缚”海洋光学公司的Rob Morris在2001年写道，光谱仪应用的扩展“进入野外、工厂、甚至人体”归功于光纤光学元件的 ...</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"><p class="MsoNormal" align="left"><span style="line-height: 1.8em; font-family: 宋体;">半个世纪以前，光谱仪还是笨重的实验室工具，“仅在过去十年左右的时间内，光谱仪器才脱离实验室的束缚”海洋光学公司的</span><span lang="EN-US" style="line-height: 1.8em; font-family: Tahoma, sans-serif;">Rob Morris</span><span style="line-height: 1.8em; font-family: 宋体;">在</span><span lang="EN-US" style="line-height: 1.8em; font-family: Tahoma, sans-serif;">2001</span><span style="line-height: 1.8em; font-family: 宋体;">年写道，光谱仪应用的扩展“进入野外、工厂、甚至人体”归功于光纤光学元件的量产、光学元件的效率提高和成本降低，以及数字革命。现如今，光谱仪已发展成为更紧凑、功能更强大的仪器，在各种科研和工业领域应用大显身手。</span></p><p class="MsoNormal" align="left"><span style="line-height: 1.8em; font-family: 宋体;"><br></span></p> <p class="MsoNormal" align="left"><span style="font-family: 宋体;">光谱仪又称分光仪，广泛为认知的为直读光谱仪。以光电倍增管等光探测器<a href="http://opticaltest.oecr.com" target="_blank" class="relatedlink">测量</a>谱线不同波长位置强度的装置。它由一个入射狭缝，一个色散系统，一个成像系统和一个或多个出射狭缝组成。以色散元件将辐射源的电磁辐射分离出所需要的波长或波长区域，并在选定的波长上（或扫描某一波段）进行强度测定。分为单色仪和多色仪两种。</span></p> <p class="MsoNormal" align="left"><b><span style="font-family: 宋体; background: lime;">光谱仪的类型</span></b></p> <p class="MsoListParagraph" align="left" style="margin-left: 21pt; text-indent: -21pt;"><!--[if !supportLists]--><span lang="EN-US" style="font-family: Wingdings;"><img width="11" height="11" src="file:///C:/Users/OECR/AppData/Local/Temp/msohtmlclip1/01/clip_image001.gif" alt="*"><span style="font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';"> </span></span><!--[endif]--><span style="font-family: 宋体;">按光波段分，有在可见光波段使用的光谱仪外，还有红外光谱仪和紫外光谱仪。</span><span lang="EN-US" style="font-family: Tahoma, sans-serif;"><o:p></o:p></span></p> <p class="MsoListParagraph" align="left" style="margin-left: 21pt; text-indent: -21pt;"><!--[if !supportLists]--><span lang="EN-US" style="font-family: Wingdings;"><img width="11" height="11" src="file:///C:/Users/OECR/AppData/Local/Temp/msohtmlclip1/01/clip_image001.gif" alt="*"><span style="font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';"> </span></span><!--[endif]--><span style="font-family: 宋体;">按色散元件的分光原理，可分为棱镜光谱仪、光栅光谱仪和干涉光谱仪等。</span><span lang="EN-US" style="font-family: Tahoma, sans-serif;"><o:p></o:p></span></p> <p class="MsoListParagraph" align="left" style="margin-left: 21pt; text-indent: -21pt;"><!--[if !supportLists]--><span lang="EN-US" style="font-family: Wingdings;"><img width="11" height="11" src="file:///C:/Users/OECR/AppData/Local/Temp/msohtmlclip1/01/clip_image001.gif" alt="*"><span style="font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';"> </span></span><!--[endif]--><span style="font-family: 宋体;">按探测方法分，有直接用眼观察的分光镜，用感光片记录的摄谱仪，以及用光电或热电元件探测光谱的分光光度计等。</span><span lang="EN-US" style="font-family: Tahoma, sans-serif;"><o:p></o:p></span></p> <p class="MsoListParagraph" align="left" style="margin-left: 21pt; text-indent: -21pt;"><!--[if !supportLists]--><span lang="EN-US" style="font-family: Wingdings;"><img width="11" height="11" src="file:///C:/Users/OECR/AppData/Local/Temp/msohtmlclip1/01/clip_image001.gif" alt="*"><span style="font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';"> </span></span><!--[endif]--><span style="font-family: 宋体;">根据现代光谱仪器的工作原理</span><span lang="EN-US" style="font-family: Tahoma, sans-serif;">,</span><span style="font-family: 宋体;">光谱仪可以分为两大类</span><span lang="EN-US" style="font-family: Tahoma, sans-serif;">:</span><span style="font-family: 宋体;">经典光谱仪和新型光谱仪</span><span lang="EN-US" style="font-family: Tahoma, sans-serif;">.</span><span style="font-family: 宋体;">经典光谱仪器是建立在空间色散原理上的仪器，都是狭缝光谱仪器</span><span lang="EN-US" style="font-family: Tahoma, sans-serif;">;</span><span style="font-family: 宋体;">新型光谱仪器是建立在调制原理上的仪器，调制光谱仪是非空间分光的</span><span lang="EN-US" style="font-family: Tahoma, sans-serif;">,</span><span style="font-family: 宋体;">它采用圆孔进光。</span></p> <p class="MsoNormal" align="left" style="text-indent: 21pt;"><span style="font-family: 宋体;">单色仪是通过狭缝只输出单色谱线的光谱仪器，常与其他分析仪器配合使用。</span></p> <p class="MsoNormal" align="left"><b><span style="font-family: 宋体; background: lime;">光谱仪的构成</span></b></p><p class="MsoNormal" align="left" style="text-align: center;"><a href="http://www.oecr.com/data/attachment/portal/201607/11/155536udlzbzrdm9mzlqt5.png" target="_blank" style="text-indent: -28px; line-height: 25.2px;"><img src="http://www.oecr.com/data/attachment/portal/201607/11/155536udlzbzrdm9mzlqt5.png"></a></p><p class="MsoNormal" align="left"><b><span style="font-family: 宋体; background: lime;"><br></span></b></p> <p class="MsoNormal" align="left"><span style="font-family: 宋体;">如图所示 光谱仪主要由一个光学平台和一个检测系统组成。包括以下几个主要部分：</span><span lang="EN-US" style="font-family: Tahoma, sans-serif;"><o:p></o:p></span></p> <p class="MsoListParagraph" align="left" style="margin-left: 21pt; text-indent: -21pt;"><!--[if !supportLists]--><span lang="EN-US" style="font-family: Wingdings;"><img width="11" height="11" src="file:///C:/Users/OECR/AppData/Local/Temp/msohtmlclip1/01/clip_image001.gif" alt="*"><span style="font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';"> </span></span><!--[endif]--><span style="font-family: 宋体;">入射狭缝</span><span lang="EN-US" style="font-family: Tahoma, sans-serif;">: </span><span style="font-family: 宋体;">在入射光的照射下形成光谱仪成像系统的物点。</span><span lang="EN-US" style="font-family: Tahoma, sans-serif;"><o:p></o:p></span></p> <p class="MsoListParagraph" align="left" style="margin-left: 21pt; text-indent: -21pt;"><!--[if !supportLists]--><span lang="EN-US" style="font-family: Wingdings;"><img width="11" height="11" src="file:///C:/Users/OECR/AppData/Local/Temp/msohtmlclip1/01/clip_image001.gif" alt="*"><span style="font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';"> </span></span><!--[endif]--><span style="font-family: 宋体;">准直元件</span><span lang="EN-US" style="font-family: Tahoma, sans-serif;">: </span><span style="font-family: 宋体;">使狭缝发出的光线变为平行光。该准直元件可以是一独立的透镜、反射镜、或直接集成在色散元件上，如凹面光栅光谱仪中的凹面光栅。</span><span lang="EN-US" style="font-family: Tahoma, sans-serif;"><o:p></o:p></span></p> <p class="MsoListParagraph" align="left" style="margin-left: 21pt; text-indent: -21pt;"><!--[if !supportLists]--><span lang="EN-US" style="font-family: Wingdings;"><img width="11" height="11" src="file:///C:/Users/OECR/AppData/Local/Temp/msohtmlclip1/01/clip_image001.gif" alt="*"><span style="font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';"> </span></span><!--[endif]--><span style="font-family: 宋体;">色散元件</span><span lang="EN-US" style="font-family: Tahoma, sans-serif;">: </span><span style="font-family: 宋体;">通常采用光栅，使光信号在空间上按波长分散成为多条光束。</span><span lang="EN-US" style="font-family: Tahoma, sans-serif;"><o:p></o:p></span></p> <p class="MsoListParagraph" align="left" style="margin-left: 21pt; text-indent: -21pt;"><!--[if !supportLists]--><span lang="EN-US" style="font-family: Wingdings;"><img width="11" height="11" src="file:///C:/Users/OECR/AppData/Local/Temp/msohtmlclip1/01/clip_image001.gif" alt="*"><span style="font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';"> </span></span><!--[endif]--><span style="font-family: 宋体;">聚焦元件</span><span lang="EN-US" style="font-family: Tahoma, sans-serif;">: </span><span style="font-family: 宋体;">聚焦色散后的光束，使其在焦平面上形成一系列入射狭缝的像，其中每一像点对应于一特定波长。</span><span lang="EN-US" style="font-family: Tahoma, sans-serif;"><o:p></o:p></span></p> <p class="MsoListParagraph" align="left" style="margin-left: 21pt; text-indent: -21pt;"><!--[if !supportLists]--><span lang="EN-US" style="font-family: Wingdings;"><img width="11" height="11" src="file:///C:/Users/OECR/AppData/Local/Temp/msohtmlclip1/01/clip_image001.gif" alt="*"><span style="font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';"> </span></span><!--[endif]--><span style="font-family: 宋体;">探测器阵列：放置于焦平面，用于测</span><span style="text-indent: -21pt; line-height: 1.8em; font-family: 宋体;">量各波长像点的光强度。该探测器阵列可以是</span><span lang="EN-US" style="text-indent: -21pt; line-height: 1.8em; font-family: Tahoma, sans-serif;">CCD</span><span style="text-indent: -21pt; line-height: 1.8em; font-family: 宋体;">阵列或其它种类的光探测器阵列。</span></p> <p class="MsoNormal" align="left"><b><span style="font-family: 宋体; background: lime;">光谱仪应用</span></b></p> <p class="MsoNormal" align="left"><span style="font-family: 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href="javascript:;" onclick="portal_comment_requote(7227, '4616');">引用</a> </span> <a href="http://club.oecr.com/space-uid-99950.html" class="xi2 xw1" c="1">xilaozi</a> <span class="xg1 xw0">2016-7-12 11:49</span> </dt> <dd>学习的</dd> </dl><a name="comment_anchor_7210"></a> <dl id="comment_7210_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(7210, '4616');">引用</a> </span> <a href="http://club.oecr.com/space-uid-34145.html" class="xi2 xw1" c="1">why3</a> <span class="xg1 xw0">2016-7-12 03:19</span> </dt> <dd>能在手机上oecr的感觉真的挺好。</dd> </dl><a name="comment_anchor_7192"></a> <dl id="comment_7192_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(7192, '4616');">引用</a> </span> <a href="http://club.oecr.com/space-uid-21500.html" class="xi2 xw1" c="1">cjy</a> <span class="xg1 xw0">2016-7-11 18:49</span> </dt> <dd>回个帖子，下班咯~</dd> </dl></div> </div> 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