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		<title><![CDATA[ZEMAX Users&#039; Knowledge Base - Articles - User Defined Features]]></title>
		<link>http://www.zemax.com/kb</link>
		<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>
		<language>en-us</language>
		<copyright><![CDATA[http://www.zemax.com/kb]]></copyright>
		<generator>N/A</generator>
		<webMaster>support@zemax.com</webMaster>
		<lastBuildDate>Fri, 16 May 2008 06:33:14 PDT</lastBuildDate>
		<ttl>20</ttl>
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			<title><![CDATA[BSDF Data Interchange File Format Specification]]></title>
			<link>http://www.zemax.com/kb/articles/229/1/BSDF-Data-Interchange-File-Format-Specification/Page1.html</link>
			<description><![CDATA[This article describes the BSDF Data Interchange file format, as developed by Radiant Imaging, Inc. This file format is required for the user-defined&nbsp;scattering function&nbsp;RI_BSDF.DLL, which&nbsp;is used to apply a scattering distribution as provided by tabular BSDF data on a non-sequential surface.]]></description>
			<author>no@spam.com (Ron Rykowski)</author>
			<pubDate><![CDATA[Fri, 02 May 2008 11:00:00 PDT]]></pubDate>
			<guid isPermaLink="true">http://www.zemax.com/kb/articles/229/1/BSDF-Data-Interchange-File-Format-Specification/Page1.html</guid>
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			<title><![CDATA[How to Create a User-Defined Scattering Function]]></title>
			<link>http://www.zemax.com/kb/articles/219/1/How-to-Create-a-User-Defined-Scattering-Function/Page1.html</link>
			<description><![CDATA[This article explains how to write a DLL for a user-defined scattering function. An example of a Gaussian X-Y probability function is given.]]></description>
			<author>no@spam.com (Sanjay Gangadhara)</author>
			<pubDate><![CDATA[Thu, 21 Feb 2008 00:00:00 PST]]></pubDate>
			<guid isPermaLink="true">http://www.zemax.com/kb/articles/219/1/How-to-Create-a-User-Defined-Scattering-Function/Page1.html</guid>
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			<title><![CDATA[Using the Henyey-Greenstein Distribution to Model Bulk Scattering]]></title>
			<link>http://www.zemax.com/kb/articles/215/1/Using-the-Henyey-Greenstein-Distribution-to-Model-Bulk-Scattering/Page1.html</link>
			<description><![CDATA[This article illustrates use of the Henyey-Greenstein distribution to model bulk scattering.]]></description>
			<author>no@spam.com (Sanjay Gangadhara)</author>
			<pubDate><![CDATA[Mon, 21 Jan 2008 00:00:00 PST]]></pubDate>
			<guid isPermaLink="true">http://www.zemax.com/kb/articles/215/1/Using-the-Henyey-Greenstein-Distribution-to-Model-Bulk-Scattering/Page1.html</guid>
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			<title><![CDATA[How To Read a Static Data File into a User-Defined Surface]]></title>
			<link>http://www.zemax.com/kb/articles/214/1/How-To-Read-a-Static-Data-File-into-a-User-Defined-Surface/Page1.html</link>
			<description><![CDATA[
<p>This article explains how to read static data from a text file into a user-defined surface.</p>]]></description>
			<author>no@spam.com (Sanjay Gangadhara)</author>
			<pubDate><![CDATA[Thu, 17 Jan 2008 00:00:00 PST]]></pubDate>
			<guid isPermaLink="true">http://www.zemax.com/kb/articles/214/1/How-To-Read-a-Static-Data-File-into-a-User-Defined-Surface/Page1.html</guid>
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			<title><![CDATA[How to Write User-Defined Surfaces with Waterloo Maple]]></title>
			<link>http://www.zemax.com/kb/articles/87/1/How-to-Write-User-Defined-Surfaces-with-Waterloo-Maple/Page1.html</link>
			<description><![CDATA[This article shows how to create ZEMAX user-defined surfaces using the Waterloo Maple mathematics package.<br/><br/><a href="http://www.leadin.co.jp/company%20page/zemax/knowledge%20base/waterloo%20defined%20surfaces/defined%20surfaces.html" target="_blank">This article is also available in Japanese.</a>]]></description>
			<author>no@spam.com (Mikhail Levtonov)</author>
			<pubDate><![CDATA[Tue, 14 Mar 2006 00:00:00 PST]]></pubDate>
			<guid isPermaLink="true">http://www.zemax.com/kb/articles/87/1/How-to-Write-User-Defined-Surfaces-with-Waterloo-Maple/Page1.html</guid>
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			<title><![CDATA[How to Model a Slicer Mirror Using a User-Defined Surface]]></title>
			<link>http://www.zemax.com/kb/articles/83/1/How-to-Model-a-Slicer-Mirror-Using-a-User-Defined-Surface/Page1.html</link>
			<description><![CDATA[This article describes how to model an unusual surface - in this case an imaging slicing mirror - by using the user-defined surface capability of ZEMAX. In addition, Physical Optics propagation is also used to compute cross-talk between channels.]]></description>
			<author>no@spam.com (Sébastien Vivès)</author>
			<pubDate><![CDATA[Tue, 10 Jan 2006 00:00:00 PST]]></pubDate>
			<guid isPermaLink="true">http://www.zemax.com/kb/articles/83/1/How-to-Model-a-Slicer-Mirror-Using-a-User-Defined-Surface/Page1.html</guid>
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			<title><![CDATA[How to Compile a User-Defined Surface]]></title>
			<link>http://www.zemax.com/kb/articles/58/1/How-to-Compile-a-User-Defined-Surface/Page1.html</link>
			<description><![CDATA[This article explains: 
<ul>
<li>What user-defined surfaces are 
</li><li>How to&nbsp;compile a user-defined surface using Microsoft Visual&nbsp;C++ version&nbsp;6 
</li><li>How to use other compilers</li></ul>
<p><a href="http://www.leadin.co.jp/company%20page/zemax/knowledge%20base/compile%20a%20user%20/compile%20a%20user.html" target="_blank">This article is also available in Japanese.</a></p>]]></description>
			<author>no@spam.com (Mark Nicholson)</author>
			<pubDate><![CDATA[Mon, 03 Oct 2005 00:00:00 PDT]]></pubDate>
			<guid isPermaLink="true">http://www.zemax.com/kb/articles/58/1/How-to-Compile-a-User-Defined-Surface/Page1.html</guid>
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