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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">变焦系统小型化设计需要考虑哪些方面？ </h1> <p class="xg1"> 时间：2021-11-15 08:59<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(1410)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=9352&idtype=aid" title="查看全部评论"><em id="_commentnum">5</em></a>来自: 网络平台</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>变焦系统小型化设计需要考虑哪些方面？</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> 变焦系统小型化设计需要考虑哪些方面？在保证系统成像质量的基础上，小型化的系统更受市场欢迎。变焦<a href="http://theory.oecr.com" target="_blank" class="relatedlink">理论</a>、光学<a href="http://material.oecr.com" target="_blank" class="relatedlink">材料</a>和<a href="http://optics.oecr.com" target="_blank" class="relatedlink">加工</a><a href="http://optics.oecr.com" target="_blank" class="relatedlink">工艺</a>的进一步改进均为变焦系统小型化设计提供了更多选择，目前，主要从以下方面来考虑小型化设计。</div><div><p style="text-align: center;"><a href="data/attachment/portal/202111/15/085859pv6yq6ceu3xqecc6.jpg" target="_blank"><img src="data/attachment/portal/202111/15/085859pv6yq6ceu3xqecc6.jpg"></a></p></div><div><br></div><div> 1，控制系统中变倍组元和补偿组元的焦距值。在满足系统像质的基础上，缩短变倍组和补偿组的焦距值可以有效缩短系统的长度。通常变倍组的焦距大于一倍短焦端焦距而小于二倍短焦端焦距。</div><div><br></div><div> 2，引入非球面或二元衍射元件等。非球面元件可以高效优化系统特定像差，二元衍射元件可以有效优化系统色差，所以引入非球面或衍射元件必定会简化系统元件个数，从而可以达到使系统趋于小型化的目的。</div><div><br></div><div> 3，使用高折射率或高阿贝数的透镜元件。高折射率透镜元件可以有效降低每个元件的所承担的光焦度，高阿贝数透镜元件可以降低系统色差。虽然可以缩短系统总长但是也会增加系统整体成本。</div><div><br></div><div> 4，采用全动型方案的变焦系统。全动型变焦系统中每个组元都可各自移动，同等变倍比情况下系统总长可以有效缩短，但是全动型的变焦系统<a href="http://machine.oecr.com" target="_blank" class="relatedlink">机械</a>装置异常复杂不利于生产制造，所以，全动型变焦系统在小型化设计中很少采用。</div><div><br></div><div><div 0px;"="" 255);"="" 255,="" rgb(255,="" simsun;="" yahei",="" microsoft="" style="overflow-wrap: normal; color: rgb(143, 143, 143); background-color: rgb(255, 255, 255); text-indent: 28px; font-family: 微软雅黑;"><span style="overflow-wrap: normal;">免责声明：编写或转载此文是为了传递更多的信息，为光电行业尽一些绵薄之力。若文字或图片侵犯了您的合法权益或有不当之处，请作者在20个工作日之内与我们联系，我们将协调给予处理。</span></div><div 0px;"="" 255);"="" 255,="" rgb(255,="" simsun;="" yahei",="" microsoft="" start;"="" normal;="" 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