Dichroic Mirror Visualizer

Interactive simulation of light transmission and reflection

550 nm

Visible Light Spectrum

What is a Dichroic Mirror?

A dichroic mirror is an optical filter that selectively transmits or reflects light based on its wavelength. These mirrors use interference coatings made of multiple thin layers of dielectric materials to achieve precise wavelength control.

🔄 Longpass Filter

Transmits wavelengths longer than the cutoff wavelength and reflects shorter wavelengths. Example: A 550nm longpass transmits red/yellow light and reflects blue/violet light.

🔄 Shortpass Filter

Transmits wavelengths shorter than the cutoff wavelength and reflects longer wavelengths. Example: A 550nm shortpass transmits blue/violet light and reflects red/yellow light.

Applications: Dichroic mirrors are widely used in fluorescence microscopy, laser systems, projectors, LED lighting, and optical instruments where precise wavelength separation is required.

💡 Try it: Adjust the cutoff wavelength slider above to see how different wavelengths are transmitted or reflected!