How do I simulate an anti-reflective coating?

Open this page and use the live Thin-Film Coating tool below — set your inputs and the simulation runs instantly in your browser using real numerics. No install, no account needed.

Yes. The simulation runs free in your browser. A one-time unlock or a Pro plan adds advanced parameters, saved presets, data import, and clean exports.

Can I use my own numbers?

Absolutely — every input is adjustable, and with data import you can drive an anti-reflective coating from your own measurements.

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Thin-Film Coating for an anti-reflective coating

Simulate an anti-reflective coating live in your browser. This runs the real Thin-Film Coating solver — adjust the inputs, watch it respond instantly, and export the result. No install, no account.

For:Students Researchers Educators Engineers Hobbyists & Makers K-12 Students First Responders

Thin-Film / AR CoatingLive

interference kills reflections

Controls

Presets

Film thickness (nm)

Film index n_f

Coat glass with a film a quarter-wavelength thick and its two reflections cancel by destructive interference — an anti-reflection coating. It works best at one wavelength (the reflectance dips to near zero there), giving camera lenses and glasses their faint purple sheen. The same physics makes soap bubbles and oil slicks shimmer with color.

▶ Run in Python

Data Inspector

Ideal thickness (550nm)100 nm

Min reflectance1.26%

Film index1.38

Governing equation

2 n_{f} t = 2 (1.38) (100) = 276 nm = mλ

Reading this result: At 100 nm the film is almost exactly quarter-wave for 550 nm, so green-light reflection is nearly cancelled — an ideal AR coating.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

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About this simulation

The full Thin-Film Coating tool models an anti-reflective coating with the same numerics engineers and scientists use — running entirely client-side. Change any parameter and the result updates in real time, so you can build intuition, check a design, or teach the concept without spreadsheets or installs.

More you can do with Thin-Film Coating

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Other ways to simulate an anti-reflective coating

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Frequently asked questions

How do I simulate an anti-reflective coating?: Open this page and use the live Thin-Film Coating tool below — set your inputs and the simulation runs instantly in your browser using real numerics. No install, no account needed.
Is it free?: Yes. The simulation runs free in your browser. A one-time unlock or a Pro plan adds advanced parameters, saved presets, data import, and clean exports.
Can I use my own numbers?: Absolutely — every input is adjustable, and with data import you can drive an anti-reflective coating from your own measurements.