OpenFilters

OpenFilters version 1.1.1 is an impressive open source software designed for 3D design within the Photo & Graphics category. Developed by Stéphane Larouche, this software excels in the creation and optimization of optical interference filters. The latest release, OpenFilters.exe, is available for free download, making it an essential tool for professionals and enthusiasts alike.

What sets OpenFilters apart is its comprehensive set of features that aid in the design and refinement of optical coatings. These include various optimization tools such as the needle method, the step method, and the Fourier transform method, as well as multiband rugates. Additionally, it provides detailed calculations for transmission, reflection, absorption, ellipsometric variables, phase, group delay, group delay dispersion, circle and admittance diagrams, the electric field distribution, and even the color of the filter.

The software supports a wide range of operating systems including Windows XP, Vista, 7, 8, 10, and 11, ensuring compatibility with most computers. Previous versions, such as 1.1, and 1.0, indicate a consistent effort in enhancing the program’s capabilities and usability.

One of the major pros of OpenFilters is that it can be obtained as a free tool, offering powerful functionalities typically found in commercial applications. The open source nature further contributes to its adaptability and potential for customization. However, a minor drawback could be the steep learning curve associated with mastering its advanced features, which may pose a challenge for beginners.

Overall, OpenFilters is a robust software packed with advanced capabilities for the optimization and design of optical interference filters. Whether one is calculating transmission and reflection or working on the electric field distribution, this tool is highly versatile and free to download, making it a valuable addition to any optical designer’s toolkit.

Pros:

• Comprehensive design and optimization tools
• Available for a wide variety of Windows OS
• Open source and free download

Cons:

• Possibly steep learning curve for beginners

You may want to check out more software, such as VFDS, VizUp or Smart Map, which might be similar to OpenFilters.