This article explains:

• How to model an LED, or other complex source, in the non-sequential mode of ZEMAX
• How to use the source_radial to enter simple experimental data
• How to use the source_file to enter detailed experimental data
• How to build complex geometrical models of sources

The article contains sample files in a zip archive which can be downloaded from the last page of the article.

This article is also available in Japanese.

This article describes how to optimize a free-form mirror to improve the brightness of an LED source. A brightness increase of 13x is achieved.

It is also a useful guide to the optimization of any general non-sequential system, and includes tips, techniques and (how to avoid) pitfalls in the optimization of such systems.

This article is also available in Japanese.

LED manufacturer Osram Opto Semiconductors now makes comprehensive ray-tracing data for its range of products available free of charge in ZEMAX format. This article explains how to access and use that data.

This article is also available in Japanese.

This article describes how to use Luca'Raymaker from Opsira to generate source files that ZEMAX can use for ray-tracing.