Sigmadyne SigFit 2026: Optomechanical Analysis & Coupling Software
SigFit 2026 is Sigmadyne’s optomechanical analysis software for integrating finite element analysis (FEA) predictions with optical design software. The 2026 release includes two versions: 2026R1 and 2026R2 (the latest). Version 2026R2 introduces significant licensing changes and builds on the core optomechanical capabilities of the platform .
Key New Features in 2026R2
Licensing Update
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New License Format: 2026R2 requires a new-format license file and license server software 11.19.9.0 .
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Transition for R1 Users: Version 2026R1 can run with either the old or new license format. Current customers received new _rev1 license files in June 2026, enabling a smooth transition .
Core Modules
| Module | Description |
|---|---|
| Surface Fitting | Fits Zernike, Annular Zernike, Aspheric, Forbes, and Legendre polynomials to deformed surfaces. Writes input files for CODE V, ZEMAX, and OSLO |
| Dynamic Response | Simulates harmonic, random, and transient vibration; calculates wavefront errors, line‑of‑sight (LoS) jitter, MTF loss, and modal contributions |
| Adaptive Control | Optimizes actuator placement and stroke to minimize surface RMS; supports genetic optimization |
| Thermo‑Optic & Stress‑Optic | Computes optical path difference (OPD) due to dn/dT and stress‑induced birefringence from FEA results |
| Optimization Interface | Writes Zernike coefficients and RMS/P‑V as Nastran‑format equations for optomechanical optimization |
