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Download DEMO version

Version 3.4.0 Demo
for Windows 10, 11

Choose one of the three formats below. All offer the same features.

For corporate users.

Installation requires Windows administrator privileges.
If you do not have these privileges, ask your PC administrator to install it.

For those who are accustomed to operating a PC.

After unzipping the zip file, execute TFVDemo.exe in the folder to start it.

Microsoft Store version

For individual users.

You can install it from the Microsoft Store.
It is relatively safe as it has passed Microsoft's review.

Demo version limitations

1. Files cannot be read or saved.
2. The wavelength range is fixed at 380–780 nm.
3. The angle of incidence is limited to 0–45 degrees.
4. Only Quartz and Air (n=1) are available as substrate and incident medium materials.
5. Only MgF2 and TiO2 are available as film materials.
6. Refractive index values cannot be entered directly.
7. The range of adjustment of refractive index and extinction coefficient (dn, dk) is limited to ±0.05.
8. The demo version is intended for evaluation purposes only.

This software cannot be distributed to third parties (distribution within an organization is fine).

Notes on the EXE installer

Due to the adoption of a new digital signature, you may see warning messages during download or installation.
These warnings appear because the new signature has not yet been recognized by some systems, but there are no issues with the software itself.
It is safe to download the software.

Even if a warning appears, you can continue the download by following the steps below:

For Microsoft Edge

Click on “...”.

Click “Keep”.

Click “Show more”.

Click “Keep anyway” to complete the download.

The publisher is “ナリー・ソフトウエア” (Nary Software), but the Japanese characters currently appear garbled due to a Windows issue.
(Note: Steps may vary depending on the version of Microsoft Edge.)

For Google Chrome

If you see “Blocked suspicious download”, click “>”.
Then click “Download suspicious file” to begin the download.
(Note: Steps may vary depending on the version of Google Chrome.)

Installation Notes

Administrator privileges are required to install the software.
If you do not have admin rights, a prompt to enter an administrator password or a message such as “Setup cannot be run” will appear, and the installation will not proceed.
In that case, please ask your system administrator to perform the installation.

If a screen like the one below appears, click “More info”.

Then click the “Run anyway” button to continue installation.

The publisher is “ナリー・ソフトウエア” (Nary Software), but the Japanese characters currently appear garbled due to a Windows issue.

Open the properties of the downloaded file, go to the “Digital Signatures” tab, and confirm that the publisher is “ナリー・ソフトウエア”.

The TFV executable file is signed with a digital signature (code signing certificate).
The digital signature confirms the following:

The file was indeed created by the developer, ナリー・ソフトウエア (not an impersonator).
The file has not been modified.

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