Bandpass infrared (IR) filter (BPF/NBP) Also called as IR filters and biomedical filters thin-film coating 650nm wavelength peak value It's only transmission is its infrared light 620-680nm, cuts off all other light Center wavelength: 645 or 650nm (+/-5nm) Transmission rate: >85nm Half bandwidth(HBW): 30nm-60nm Suitable for laser detector and dental medical equipment and biomedical Bandpass filters (BPF) are used to transmit one or more bands of wavelengths while blocking (or reflecting) adjacent wavelengths over extended ranges Diameters: 5 to 250mm,Thickness: 0.5 to 3.0mm Shapes: shape, trapezoid, and square Shape and size can be customized according to customer requirements