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Help Center445nm Blue Narrowband Filter, High Transmittance Precision Filtering Optical Component
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The 445nm blue light filter is a precision optical component designed specifically for screening and application in the blue light band (440-450nm). This filter adopts multi-layer dielectric film coating technology to achieve high transmittance at the center wavelength of 445nm, while effectively cutting off light in other bands. It is the core component for achieving precise wavelength selection in optical systems.
Core Features
Accurate spectral positioning
Center wavelength: 445nm (blue light band)
Half width at half maximum (FWHM): can be customized according to application requirements, common specifications are 10nm, 20nm, 40nm
Peak transmittance:>90%
Excellent optical performance
Adopting ion beam sputtering (IBS) or electron beam evaporation (EBE) coating process
Dense membrane layer and excellent environmental stability
Cut off depth: OD4-OD6 (optical density), effectively suppressing stray light
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