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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">积分球测试光通量不准确的解决方案 </h1> <p class="xg1"> 时间：2018-5-28 10:45<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(1613)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=6678&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>积分球在测试灯具光通量时与标准值偏低，甚至会达到20％的偏差（设备原理问题，国内国外设备一样），用分布光度计测试光通量准确，但测试效率低，一天约测试8个灯，无法满足企业大量测试需求。</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 style="padding: 0px 0px 15px; margin: 0px; list-style: none; border: 0px; line-height: 24px; text-indent: 2em; word-break: break-word; font-family: 瀹嬩綋;">积分球在<a href="http://opticaltest.oecr.com" target="_blank" class="relatedlink">测试</a>灯具光通量时与标准值偏低，甚至会达到20％的偏差（设备原理问题，国内国外设备一样），用分布光度计测试光通量准确，但测试效率低，一天约测试8个灯，无法满足<a href="http://b.oecr.com/company" target="_blank" class="relatedlink">企业</a>大量测试需求。</p><p style="padding: 0px 0px 15px; margin: 0px; list-style: none; border: 0px; line-height: 24px; text-indent: 2em; word-break: break-word; font-family: 瀹嬩綋;"><strong style="padding: 0px; margin: 0px;">积分光度计工作原理：</strong></p><p style="padding: 0px 0px 15px; margin: 0px; list-style: none; border: 0px; line-height: 24px; text-indent: 2em; word-break: break-word; font-family: 瀹嬩綋;">灯具发出的光照射在积分球内壁上，经内壁涂有漫反射<a href="http://material.oecr.com" target="_blank" class="relatedlink">材料</a>的表面多次反射后形成均匀照度的光线后进入光谱辐射仪，形成测试数据。</p><section style="padding: 0px; margin: 0px; font-family: 瀹嬩綋; font-size: 12px;"><section style="padding: 0px; margin: 0px;"><section style="padding: 0px; margin: 0px;"><section style="padding: 0px; margin: 0px;"><p style="padding: 0px 0px 15px; margin: 0px; list-style: none; border: 0px; line-height: 24px; text-indent: 2em; font-size: 14px; word-break: break-word;">因此在使用积分球测试光通量时可能有几方面的原因影响测试数据：</p></section></section></section></section><p style="padding: 0px 0px 15px; margin: 0px; list-style: none; border: 0px; line-height: 24px; text-indent: 2em; word-break: break-word; font-family: 瀹嬩綋;">标准灯与被测光源光分布不同会产生偏差。角度越大偏差越大。</p><p style="padding: 0px 0px 15px; margin: 0px; list-style: none; border: 0px; line-height: 24px; text-indent: 2em; word-break: break-word; font-family: 瀹嬩綋;">标准灯与被测灯尺寸不同产生偏差。</p><p style="padding: 0px 0px 15px; margin: 0px; list-style: none; border: 0px; line-height: 24px; text-indent: 2em; word-break: break-word; font-family: 瀹嬩綋;">被测灯具外观颜色的吸附性会降低反射光通，产生偏差。</p><p style="padding: 0px 0px 15px; margin: 0px; list-style: none; border: 0px; line-height: 24px; text-indent: 2em; word-break: break-word; font-family: 瀹嬩綋;">积分球内壁使用时间久后反射率下降。</p><p style="padding: 0px 0px 15px; margin: 0px; list-style: none; border: 0px; line-height: 24px; text-indent: 2em; word-break: break-word; font-family: 瀹嬩綋;">由以上四点原因，在测试黑色的小角度射灯时光通量有时候会比实际光通量低20％，使积分球在测试光通量时失去意义。</p><p style="padding: 0px 0px 15px; margin: 0px; list-style: none; border: 0px; line-height: 24px; text-indent: 2em; word-break: break-word; font-family: 瀹嬩綋;">积分球在测试时采用标准灯校准，如果校准后还不能达到理想数据或者为了使校准数据更准确，<a href="http://opticaldesign.oecr.com" target="_blank" class="relatedlink">软件</a>内部有一个修正系数，如下图所示。</p><p style="padding: 0px 0px 15px; margin: 0px; list-style: none; border: 0px; line-height: 24px; word-break: break-word; font-family: 瀹嬩綋; text-align: center;"><img src="http://images.ofweek.com/Upload/News/2018-05/26/ruanxueke/1527299000135011906.jpg" title="积分球测试光通量不准确的解决方案" alt="积分球测试光通量不准确的解决方案" style="padding: 0px; margin: 0px; vertical-align: middle; border: none; max-width: 85%; height: auto !important;"></p><p style="padding: 0px 0px 15px; margin: 0px; list-style: none; border: 0px; line-height: 24px; text-indent: 2em; word-break: break-word; font-family: 瀹嬩綋; text-align: center;">测试主页面</p><p style="padding: 0px 0px 15px; margin: 0px; list-style: none; border: 0px; line-height: 24px; word-break: break-word; font-family: 瀹嬩綋; text-align: center;"><img src="http://images.ofweek.com/Upload/News/2018-05/26/ruanxueke/1527299039793084719.jpg" title="积分球测试光通量不准确的解决方案" alt="积分球测试光通量不准确的解决方案" style="padding: 0px; margin: 0px; vertical-align: middle; border: none; max-width: 85%; height: auto !important;"></p><p style="padding: 0px 0px 15px; margin: 0px; list-style: none; border: 0px; line-height: 24px; text-indent: 2em; word-break: break-word; font-family: 瀹嬩綋; text-align: center;">修正系数页面</p><p style="padding: 0px 0px 15px; margin: 0px; list-style: none; border: 0px; line-height: 24px; text-indent: 2em; word-break: break-word; font-family: 瀹嬩綋;">根据这一原理，只要知道一个灯的准确光通量，用积分球在修正系数为1时为测试数据为X，用已知的准确光通量／X出来一个系数，即为修正系数。上图修正系数页面输入不方便，可在下图自吸收位置输入修正系数，结果一样。</p><p style="padding: 0px 0px 15px; margin: 0px; list-style: none; border: 0px; line-height: 24px; word-break: break-word; font-family: 瀹嬩綋; text-align: center;"><img src="http://images.ofweek.com/Upload/News/2018-05/26/ruanxueke/1527299058914038281.jpg" title="积分球测试光通量不准确的解决方案" alt="积分球测试光通量不准确的解决方案" style="padding: 0px; margin: 0px; vertical-align: middle; border: none; max-width: 85%; height: auto !important;"></p><p style="padding: 0px 0px 15px; margin: 0px; list-style: none; border: 0px; line-height: 24px; text-indent: 2em; word-break: break-word; font-family: 瀹嬩綋;">将计算出的修正系数输入后重新测试，测试结果与已确定光通量相同，误差在2％内。计算出的修正系数测试此灯准确，测试其它灯是否准确，经过近半年多次验证，同种类型灯（筒灯／射灯等）、结构尺寸偏差不大（如3W／6W／9W等）、可用一个系数。</p><p style="padding: 0px 0px 15px; margin: 0px; list-style: none; border: 0px; line-height: 24px; text-indent: 2em; word-break: break-word; font-family: 瀹嬩綋;">将此系数保存，以后同类型，尺寸偏差不大的灯都可以用已确定的系数。用此方法测试的灯已排除角度、颜色等传统影响积分球因素，主要和灯具外形和尺寸有关。</p><p style="padding: 0px 0px 15px; margin: 0px; list-style: none; border: 0px; line-height: 24px; text-indent: 2em; word-break: break-word; font-family: 瀹嬩綋;">已知准确光通量的灯可以用分布光度计测试，不同类型、不同尺寸的灯分布光度计只需只测一次，就可以确定系数，以后同类型，同尺寸的灯都可以只用积分球测试，不需分布光度计测试，从而大大提高测试效率，使分布光度计只测有配光要求的灯或者结构设计时在配光设计时测一次，后续的测试采用积分球。</p><p style="padding: 0px 0px 15px; margin: 0px; list-style: none; border: 0px; line-height: 24px; text-indent: 2em; word-break: break-word; font-family: 瀹嬩綋;">目前新的GB／T 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c="1">jyltt</a> <span class="xg1 xw0">2018-5-28 19:27</span> </dt> <dd>我是学光学的啦。</dd> </dl><a name="comment_anchor_17613"></a> <dl id="comment_17613_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(17613, '6678');">引用</a> </span> <a href="http://club.oecr.com/space-uid-60408.html" class="xi2 xw1" c="1">heisman</a> <span class="xg1 xw0">2018-5-28 17:57</span> </dt> <dd>1000个光电贝才能买到VIP。</dd> </dl><a name="comment_anchor_17606"></a> <dl id="comment_17606_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(17606, '6678');">引用</a> </span> <a href="http://club.oecr.com/space-uid-59785.html" class="xi2 xw1" c="1">cottaier</a> <span class="xg1 xw0">2018-5-28 14:27</span> </dt> <dd>啥玩应呀</dd> </dl><a name="comment_anchor_17598"></a> <dl id="comment_17598_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" 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