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## How to Set the Lens Mount Reference for Thermal Analysis

This article demonstrates how the mechanical reference for the  lens mount can be arbitrarily changed.

Authored By: Nam-Hyong Kim

Published On: September 26, 2006

## How Does Zemax Model the Thermal Expansion of Optical Mounts?

This article explains how the TCE column in the Lens Data Editor is used to model optical mounts between lenses.

Authored By: Nam-Hyong Kim

Published On: March 19, 2007

## How to Fit Temperature-Dependent Index Data to the Zemax Thermal Model

This article explains how to fit the observed temperature variation of discrete (e.g. experimental) refractive index data to the Zemax thermal model.

Published On: October 30, 2008

## How to model thermal effects using OpticStudio

Authored By: Nam-Hyong Kim

Published On: July 21, 2006

## What is a Ray?

• What a ray is
• Rays and wavefronts
• Coordinates, cosines, and propagation
• Refraction, reflection, and diffraction
• Amplitude. phase and optical path

Authored By: Ken Moore

Published On: December 2, 2015

## Understanding paraxial ray tracing

Paraxial rays and parabasal rays are often used in OpticStudio to calculate system data and analysis results. It is important to understand what these rays are in order to avoid confusion in analysis results. This article discusses these special rays and how they differ from each other and from real rays.

Authored By: Mark Nicholson

Published On: July 21, 2005

## How to Model Corner-Cube Retroreflectors

Corner Cube retroreflectors are commonly used in a wide range of optical systems. This article describes various different ways in which these components can be modeled in Zemax OpticStudio. The treatment can be as detailed as the user needs, with effects due to face misalignment, roofline straddling, thin-film coatings, diffraction etc included as required.

Authored By: Mark Nicholson

Published On: December 14, 2015

## How to Debug a Double-Pass Lens File

This article describes an easy way to test whether a double-pass lens file is correctly set up, or not, and to identify where any errors are.

Authored By: Mark Nicholson

Published On: January 4, 2016

## How to Model a Scanning Mirror

• How to set up the coordinate breaks needed to make a scanning mirror
• How to use the Multiple Configuration Editor to sample multiple scan angles
• How to set up a galvanometer-style scanning mirror, where the mirror tilts about its vertex
• How to set up a polygon scanning mirror, where the mirror tilts about an offset point

The article is accompanied by a ZIP archive containing the sample Zemax OpticStudio files used. This can be downloaded from the final page of the article.

Authored By: Mark Nicholson

Published On: December 15, 2015

## How to Generate Cross-Section and Moment Data for an Extended Source using Geometric Image Analysis

This article describes how to use the Geometric Image Analysis feature to generate cross-section plots of and moment data (centroid, RMS width) for an extended source. This feature may also be used to generate results for a point source (in the limit where the source size is set to zero), allowing Geometric Image Analysis to supplement results provided by the Spot Diagram.