TFCalc V5.0 is the first major version upgrade in over 20 years for this optical thin-film design software, by HULINKS (which succeeded the original developer, Software Spectra) . The release centers on a completely redesigned user interface while retaining the proven calculation engine and numerical behavior of the previous version (V3.6) .
Key New Features in V5.0
Redesigned User Interface
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Multi-Document Interface (MDI): Manage multiple thin-film designs within a single parent window, with layer configurations, plots, and results organized per design for better visibility .
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Excel-Like Spreadsheet Interface: Tabular windows for layers, targets, and materials now support direct cell editing (F2), range selection, auto-fill via drag handle, and Ctrl+C/Ctrl+V paste directly from Excel .
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Full Undo/Redo: Ctrl+Z/Ctrl+Y now covers cell input, layer insertion/deletion, material/target edits, and even column width changes .
Enhanced Visualization
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All-New 3D Surface Plots: View spectral characteristics as a 3D surface (wavelength × incident angle × value) with mouse rotation, zoom, pan, cross-sectional views, and image export—enabling assessment of angle-dependent trends in a single view .
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Upgraded 2D Plots: Color-coded saved results, cursor coordinate display, and user-defined reference lines .
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Color Chart Revamp: Now displays in true color instead of monochrome, with an option to revert to classic mode .
Performance & Compatibility
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Native 64-bit Architecture: Rebuilt for stable operation during memory-intensive processing .
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Dual Calculation Modes: Switch between Speed-Priority (early exploratory design) and Accuracy-Priority (final verification) .
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Backward Compatibility: Can be installed alongside V3.6 and reads/saves V3.6 file formats .
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Material Filtering: Quickly locate materials by specifying wavelength and filtering by refractive index (n) or extinction coefficient (k) .
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Bilingual UI: English and Japanese switchable within the application .
