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		<title><![CDATA[ZEMAX Users' Knowledge Base - Articles - ]]></title>
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		<description><![CDATA[Articles describing the use of the ZEMAX optical system design software for lens design, illumination system design, stray light and laser beam propagation]]></description>
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			<title><![CDATA[How To Model a Gradient Index version of a Sellmeier1 Glass using the Gradient 5 Surface]]></title>
			<link>http://www.zemax.com/kb/articles/274/1/How-To-Model-a-Gradient-Index-version-of-a-Sellmeier1-Glass-using-the-Gradient-5-Surface/Page1.html</link>
			<description><![CDATA[
<p>This article explains how to convert Sellmeier 1 dispersion coefficient data into dispersion coefficient values for the Gradient 5 surface. After doing so, the Gradient 5 surface may then be used to model the variation of index with position for a Sellmeier 1 glass.</p>]]></description>
			<author>no@spam.com (Brian Bauman)</author>
			<pubDate><![CDATA[Mon, 22 Jun 2009 10:00:00 PDT]]></pubDate>
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