Multiband Dichroic Beamsplitter

A multi-band dichroic mirror is an optical interference filter that provides high reflection and high transmission at multiple specific wavelength ranges. Through the design of multilayer dielectric coatings, it enables selective spectral separation of different wavelengths.

A single-wavelength edge dichroic mirror has only one critical point for reflection and transmission. Its coating is relatively simple and targets a single laser or fluorescence channel.
In contrast, a multiband dichroic mirror handles two or three spectral bands. Its coating design is more complex and suitable for multicolor fluorescence imaging or multi-laser beam combination.

When selecting a multi-wavelength dichroic mirror, the most important factors are the specific wavelengths to be reflected and transmitted, along with the reflection and transmission efficiencies. Other considerations include angle of incidence, substrate material, and surface quality of the optical base.

Multi-band dichroic mirrors are commonly used in multicolor fluorescence microscopy imaging, multi-laser excitation flow cytometry, multi-wavelength laser beam combination systems, and multispectral spectrometer beam separation.

Yes, we support custom combinations of any spectral bands within the 250–2500nm range, including dual-band and triple-band dichroic mirrors.