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How to Model Thermal Gradients in an Interferometer Cavity 3 attachments
This article shows how to model a linear thermal gradient in a double-pass system. The method can be easily extended to more complex gradients. Authored By: Michael Pate                                                                                  ...
Take Care With "Exact Equivalent" Glasses 1 attachment
A few years ago the manufacturers of optical glasses started the process of reformulating their glasses to remove arsenic and lead. At first glance, most of these glasses appear to be the exact equivalents of the original glasses. However, examining the...
Fly Eye Arrays for Uniform Illumination in Digital Projector Optics
This article discusses the design issues involved in designing fly''s eye spatial light integrators, with specific application to the design of digital projectors. Authored By: Michael...
How To Model a Gradient Index version of a Sellmeier1 Glass using the Gradient 5 Surface 1 attachment
This article explains how to convert Sellmeier 1 dispersion coefficient data into dispersion coefficient values for the Gradient 5 surface. After doing so, the Gradient 5 surface may then be used to model the variation of index with position for a...
How To Write Zemax Extensions in FORTRAN 1 attachment
This article describes how one user took advantage of the published C-language code for ZCLIENT.C, the program that provides Dynamic Data Exchange (DDE) functionality with Zemax, to modify it so that the main utility functions provided in that code could...
How to Model a Slicer Mirror Using a User-Defined Surface 1 attachment
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....
How to Show Detector Volume Data in 3-D 1 attachment
The Detector Volume object in Zemax is a very useful tool for detecting light inside a volume. It uses volume pixels, or voxels, to detect light. However, the Zemax interface currently allows these voxels to be viewed only in 2-D planes. This article will...
The Mars Rover Camera Lenses 4 attachments
This article is an excerpt from Gregory Hallock Smith''s book, Camera Lenses:  From Box Camera to Digital .  The excerpt is Chapter 31 in its entirity.  Chapter 31 of Smith''s book discusses the cameras aboard the Mars Exploration Rovers, the lenses of...
Demystifying the Off-Axis Parabola Mirror 1 attachment
An off-axis parabolic (OAP) mirror consists of a small section cut out  from a larger, so-called “parent” parabolic mirror. Working with these mirrors, especially for the first time, can seem like a daunting task.  However, with a little instruction and a...
How to Simulate the Sparkle of a Diamond 2 attachments
This article describes how to simulate the optical appearance a diamond using the powerful, non-sequential capabilities of Zemax. It uses a white light source and the true-color capabilities of Zemax to show the visual appearance of the diamond. It also...