Sigmadyne Sigfit 2020r1e

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Sigmadyne SigFit 2020R1e
459.8 mb

The Sigmadyne development team is pleased to announce the availability of SigFit 2020R1e is an engineering analysis tool that integrates mechanical analysis with optical analysis.

SigFit 2020R1(d)e Release notes

New Features

Line of Sight Error Calculations Use Central Difference
The line-of-sight error calculations now use a central difference formulation instead of the prior forward difference calculations. This change was made when it was found that such formulation is required for consecutive surfaces with compound angle orientations with respect to each other.
Support of Base Refractive Index for User Defined Gradient Thermo-Optic Results for Code V
The macro file used for importing thermo-optic results in the form of user defined gradient index results now includes commands to build the private library using the base indices before the gradient indices are applied. This allows consistency with nominal model indices set for environment conditions or private libraries.
Change in RoC Written as Change or Update in Optical Macro Files

Error Fixes

Wavefront Error Prediction with Code V Models and Subtraction of Change in Radius of Curvature Corrected
An issue was found with the use of wavefront error prediction in SigFit by linking with Code V models in the System module of SigFit and subtraction of change in radius of curvature and has been corrected. Note that subtraction of change in radius of curvature is not the default setting. Note this feature is not related to computing wavefront error in Code V by importing a macro file written by SigFit.
Part Coordinate System Numbering Fixed for Use with SolidWorks Simulation
Possible numbering conflicts could occur when using offset apertures with SolidWorks Simulation. The internal numbering method of part coordinate systems could conflict with the internal numbering of offset systems and has been corrected. Error would results in analysis error with no results generated.
PSD Table Specification Not Needed for WFE Prediction in Harmonic Analysis
An error required the specification of a PSD table in order for WFE predictions to be used with harmonic analysis. This error has been corrected. Error would results in analysis error with no results generated


SigFitallows users to perform opto-mechanical analyses on finite element results such as surface deformations, lens temperatures, and lens stresses. Such results are used within SigFit to compute optical performance metrics such as characterizations of deformed optical surfaces, maps of optical path difference (OPD) due to the thermo-optic and stress-optic effects in lenses, maps of birefringence and crystal axis orientation due to stresses in lenses. These optical performance metrics can be formatted into files readable by many popular optical analysis codes allowing engineers to understand the effects on optical performance due to mechanical disturbances.

SigFit has many other features as well including simulation of adaptive control, variational analysis using Monte Carlo methods, and calculation of dynamic responses wavefront error (with link to optical analysis software) and line-of-sight error.

Overview of SigFit

Sigmadyne,located in Rochester, NY, specializes in optomechanical consulting services with decades of experience in many photonics markets. Our software, SigFit, allows users to transform results from mechanical finite element analyses into result import formats for popular optical analysis tools.

Product:Sigmadyne SigFit
Version:2020R1e
Supported Architectures:x64
Language:english
System Requirements:PC *
Size:459.8 mb

Installation Requirements
Installation of SigFit requires administrator permissions.

SigFit requires installation of Microsoft Visual C++ 2005 Redistributable SP1 with the latest security updates, Microsoft Visual C++ 2008 Redistributable SP1 with the latest security updates, and Microsoft Visual C++ 2012 Redistributable Update 4. The installer will install these redistributables automatically if the specific versions are not already installed.

SigFit has been tested on the following platforms:
Microsoft Windows 10 on Intel x86_64

Be sure that "Beta: Use Unicode UTF-8 for worldwide language support" is not checked. Some machines have been found to ship with this option checked. Checking this box results in a segmentation fault in a library call from wxPython to a Windowslibrary when VSigFit is started.
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