Dichroic Filter

Dichroic Filter

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He Rui optics' The main features of dichroic filters include a sharp transition from reflection to transmission, high transmission within the passband, hard coatings, and no adhesives, resulting in a long filter life. These filters are typically made up of a thin film dielectric coating on glass, showing a distinct transition between the transmission and reflection wavelengths. Dichroic filters are similar to traditional interference filters but distinguish themselves by reflecting all unwanted wavelengths. Therefore, they also provide minimal absorption characteristics. Dichroic filters can provide long-pass, short-pass, bandpass, band-stop, and color correction types over a range of wavelengths.

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