Download Update
Download TFCalc 3.5.12 Update (1.2 MB)
After downloading the ZIP file, unzip it and move the TFCalc35.EXE and sx32w.DLL files into
the C:\TFCalc directory, replacing the old files.
Changes
We have added some new features to TFCalc and fixed a number of rare or minor problems. All changes
are listed here. If you encounter other problems, please contact Software Spectra.
- Export coating designs to Code V and ZEMAX. The File menu now has commands to export
coating designs to files that the Code V and ZEMAX programs can read. This enables the user to easily
incorporate coatings into their optical designs.
- Fixed Variable Materials Optimization. If the C:\TFCalc\MATERIAL directory contained
more than 150 materials and the index of a variable material was being optimized, then TFCalc would
stop with an exception.
- More wavelengths allowed. The old limit of 1001 wavelengths in material, illuminant,
and detector files has been increased to 10001. The maximum number of optimization targets has also
been increased to 10001.
- Save Plots as GIF Files. Four types of plots can now be saved as GIF files. Look for the
new command on the Options menu of the Plot, Monitor Chart, Color Chart, and EFI Plot windows.
These GIF files are useful for making reports; for example, you can drop the GIF file into a MS Word
document.
- Monitor Chart Problem Fixed. In some rare cases, the layers were not numbered correctly.
- Admittance Calculated. The admittance of the front layers can be calculated. Look at
"Set EFI Plot Parameters" dialog to use this feature.
- Fixed Problem Printing to Acrobat Distiller. Acrobat Distiller enables the user to
create PDF files directly from TFCalc. There was a problem in doing this.
- Fixed Critical Angle Problem. When an angle in a layer was exactly at the critical angle --
which almost never occurs -- there was a division by zero error.
- Fixed Dispersion Printout. In the printout of dispersion formulas, two of the dispersion
formula names were garbled.
- Fixed Conversion of Dispersion Formula. In the dispersion dialog, if the user changed
a dispersion formula, pressed the Convert button. and entered a
new material name that was alphabetically before the current material, then the new material would
be overwritten by the old one.
- Fixed Dispersion Formula Fitting Problem. In the dispersion dialog, if after fitting a
dispersion formula, the user pressed F4 or F5, then there is an exception in some versions of Windows.
- Fixed Dispersion Formula Overflow Problem. In the dispersion formulas for K, it is very
easy to create a formula that produces very high K values. The user is now warned.
- Fixed Wavelength String Problem. In some cases, the wavelength units were displayed
incorrectly.
- Improved Electric Field Calculation. The EFI calculation could overflow when the
incident angle was greater than the critical angle and the layers were very thick.
- Fixed Constrained Simplex Optimization. The Simplex optimization method would not always
constrain a layer thickness. Sometimes the layer thickness was allowed to be negative.
- USB Dongle Supported. All future sales of TFCalc will include a USB dongle instead of
the old Printer-port dongle. Users of TFCalc 3.5 may request to exchange their old dongle for a USB
dongle. Users of TFCalc 3.4 or earlier must upgrade to 3.5 to use a USB dongle.
- Fixed Minor Optimization Problem. In the variable metric method, a variable could have been
uninitialized if the user quit optimizing during iteration 0.
- Fixed Revert Command. In very rare circumstances, the revert
command on the file menu could cause an exception.
- Fixed Color Problem. The color observer was not always set correctly.
- Optimization Targets Saved More Accurately. Density targets were not saved correctly for OD > 8.
- Fixed Plot Overlay Problem. In very rare circumstances, a divide-by-zero error
could occur.
- Fixed Multiple Environments Problem. When mixture materials and multiple environments were
used, then the layers containing mixture materials were converted to variable materials.
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