BP850 narrowband filters usually use the interference principle of multi-layer dielectric films to achieve selective transmission of wavelengths. By precisely controlling the thickness and refractive index of each layer of dielectric film, light of a specific wavelength can be reflected and interfered between the film…

andpass filters are filters with cut-off bands adjacent to the transmission bands on both sides of the spectral characteristic curve. Bandpass filters are roughly divided into two types according to spectral characteristics: broadband filters and narrowband filters. The two types of filters are usually combined.…

BP850 narrowband filters usually use the interference principle of multi-layer dielectric films to achieve selective transmission of wavelengths. By precisely controlling the thickness and refractive index of each layer of dielectric film, light of a specific wavelength can be reflected and interfered between the film…