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How to Model LEDs and Other Complex Sources
- By Mark Nicholson
- Published 26 August 2005
- LEDs
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Summary and References
This article has described several techniques to model LEDs and other complex sources:
- The easiest method, and best when experimental data is scarce, is to use the source_radial or other built-in sources
- Experimental data, such as provided by Radiant Imaging and Opsira, gives the highest accuarcy and is very easy to use
- Complex source models can be useful when rays are re-imaged onto the source object
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5 Responses to "How to Model LEDs and Other Complex Sources" 
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said this on 18 Sep 2005 1:39:58 AM PST
Excellent Article just what I needed to review a design.
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said this on 28 Sep 2005 4:55:51 AM PST
Because I have not obtained such detailed description as the usage of ZEMAX until now. They are very excellent.
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said this on 12 Oct 2005 9:32:09 PM PST
I had an overall view on LED source design details..I had been using Zemax for the past few years..
In case that I would need to design a non-symmetrical source ...such as an incandescent bulb..how to go about that
so what is the limit that zemax has
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said this on 13 Oct 2005 12:41:58 PM PST
Reply to comment 4: I think it is exactly the same process. You can use a filament source to build up a geometric model or use measured data. Also look for support for IES format data sources soon!
Please email me at mark@zemax.com if you want to discuss this further.
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said this on 21 Nov 2005 8:27:22 AM PST
For asymmetrical sources you can still use the Radiant Imaging/Opsira approach. The Source_Radial assumes a rotationally symmetric source but the Source_IES gives access to the full IESNA95 and later specifications.
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