IWBP3000-5000-Infrared broad-band pass filter

Multi-gas Analysis Optical Filter

An infrared broadband filter is an optical device crafted to permit the passage of infrared light within a particular range while effectively obstructing light of different wavelengths. Its outstanding transmission capabilities span across a spectrum of infrared light from 0. 9 Micrometers to 12 micrometers with efficiency in transmitting light. The key factor, behind this performance lies in the intricate multilayer thin film structure meticulously embedded within the filter. Each layer of film has been meticulously designed to have distinct refractive indices and thicknesses precisely calculated. As light passes through these films various wavelengths undergo different levels of reflection, absorption, and transmission because of differences in speed and alterations in direction. This transmission process allows the infrared broadband filter to effectively filter out the intended infrared light.

This remarkable functionality is primarily attributed to the meticulously constructed multilayer thin-film structure within the filter. Each thin-film layer has been precisely calculated to possess unique refractive indices and thicknesses. When light traverses these thin films, different wavelengths experience varying degrees of reflection, absorption, and transmission due to differences in speed and changes in direction. It is this selective transmission mechanism that enables the infrared broadband filter to accurately screen out the desired infrared light.

Application:Infrared detector/Infrared gas analyzer/Security monitoring/Medical apparatus and instruments/Industrial temperature measurement