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Troubleshooting your OpticStudio Installation

This article explains what to do if you have problems launching OpticStudio.

If you are able to run OpticStudio but have a crash or other problems while using it, refer to the following article:
How to Report a Problem or Possible Bug to Zemax Support

If you experience slow response in graphics windows while running OpticStudio, refer to the following article.
Troubleshooting UI Issues in OpticStudio
If you experience black (or white) windows when using OpticStudio, refer to the following article.
What to Do if the Graphics Windows in OpticStudio are Black


Issue: OpticStudio Requests a License Code
Issue: OpticStudio is unable to find a license key
Error: OpticStudio requires the .NET Framework
Issue: Nothing happens when launching OpticStudio
Error: OpticStudio has stopped working
Issue: OpticStudio hangs at splash screen on startup

Getting help from Zemax


Authored By: Alison Yates

Published On: October 15, 2015

Installing OpticStudio for the First Time

This article explains how to download and install OpticStudio.


Authored By: Alison Yates

Published On: July 25, 2018

Why is the Optical Performance Sometimes Different at the Image Surface Versus a Co-Located Surface?

This article explains why you may see different results at two co-located surfaces that are at the same location in space, when one of the surfaces is the image surface.


Authored By: Andrew Locke

Published On: December 25, 2015

Zemax OpticStudio 30-Day Money-Back Guarantee

What is the Zemax OpticStudio 30-Day Money-Back Guarantee?

How is Radiant Intensity Defined?

This article explains the definition of Radiant Intensity.



Authored By: Mark Nicholson

Published On: June 12, 2008

How to Model a Phantom Lens

This article describes how to modeled a turreted lens system using the multi-configuration capabilities of Zemax OpticStudio. A number of IGNR operands are necessary for ignoring the turreted lens in one of the configurations, and are added with a ZPL macro.

Authored By: Sanjay Gangadhara

Published On: December 1, 2015

How to Characterize Far-Field Color Mixing with the Source Illumination Map

This article explains how the Source Illumination Map can be used to read angular data from a source and display a true color image of the resulting illumination pattern in the far-field.

Authored By: Dr. Sanjay Gangadhara

Published On: July 10, 2012

Using the OpticStudio Dynamic CAD Link with Assemblies

This article explains how to dynamically open and explode SolidWorks®, Autodesk Inventor® and PTC Creo Parametric® assembly files inside OpticStudio.

Authored By: Dr. Sanjay Gangadhara, Updated by Thomas Pickering

Published On: July 20, 2016

How to Explode a CAD Assembly

This article explains how to explode a CAD Assembly

Authored By: Dr. Sanjay Gangadhara

Published On: July 10, 2012

How to Tolerance for Tilts and Decenters of a Double Pass System

This article explains:
  • How to setup a double pass system for the purposes of tolerancing the tilts/decenters of elements.
  • How to setup the Tolerance Data Editor with the user-defined operands (TU**) required for accurately modeling lens tilts and decenters in double pass.
  • How to verify that the double pass system has been adequately modeled to reflect reality.



Authored By: Dan Hill

Published On: July 27, 2006

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