Interference Filter (Band Pass Filter)

Interference Filters are optical filters used in blood analysis and observation of immune reactions.Only fluorescence is extracted from the light, which is a mixture of the excitation light that causes the reaction and the fluorescence generated as a result of the reaction.

If you specify the center wavelength, FWHM, and blocking range, we can manufacture custom filters to meet your requirements, such as narrow bandpass filters with a FWHM of 1.0 nm and filters with a maximum transmittance of 90% or higher.

Normally, it can only block a certain range of wavelengths. However, when combined with a blocking filter using a metallic film, a colored glass filter, or a cut filter, it is possible to block the entire wavelength range.

They are used in fluorescence testing devices, blood analyzers, immunoassay devices, and life science analyzers.