ZEMAX Users' Knowledge Base

Akash Arora

Akash is an Optical Engineer at ZEMAX Development Corporation and is also one of the instructors for our short courses on ZEMAX. He is a graduate of the University of Arizona's College of Optical Sciences, with a Bachelor's degree in Optical Sciences and Engineering. Prior to joining ZEMAX Development Corporation he worked at Applied Image Group (Tucson, AZ) and Honeywell (Phoenix, AZ).

 Articles by this Author

Photorealistic Rendering Using ZEMAX and POV-Ray

This article describes photorealistic rendering and the rendering software POV-Ray. It provides and explains a macro written to render ZEMAX lens files in POV-Ray. 

Question: ZEMAX is well known for modeling visible, infrared, and ultraviolet applications, but is it accurate when using radio, x-ray, or other "non-optical" wavelengths?

Updated December 2009. This article explains what is required to run ZEMAX on an Intel-based Apple Mac and the differences between the methods that can be used. It also provides performance comparisons between the alternate methods.

This article is also available in Japanese.


This article describes how to use the polar detector and import/export source IESNA and EULUMDAT data. It also contains a description of the NSDP optimization operand and ZPL numeric function. An encapusulated LED is used to illustrate these features.

This article gives a recommended approach to the optimization of non-sequential optical systems. The recommended methods are to use Pixel Interpolation, aggregate detector data (moment of illumination data) and the orthogonal descent optimizer. As an example, a free-form mirror is optimized to maximize the brightness of an LED from 23 Cd to >250 Cd in just a few minutes of optimization.

Question: When using the ghost focus generator tool, how can I properly account for the energy in a ghosted path?

This article is also available in Japanese.

How to Model an LCD Backlight

In this article, a wedged LCD backlight is modeled, analyzed, and optimized for illumination output criteria.

ZEMAX has two features that improve scattering efficiency: Scatter To and Importance Sampling. In this article we discuss the details of each and perform a stray light analysis using importance sampling.