397.7-0.37 OD6 Ultra Narrow Bandpass Filter



397.7-0.37 OD6 Ultra Narrow Bandpass Filter


Ultra-narrowband optical interference filter with a 397.7 nm center wavelength (CWL), a 0.37 nm full-width at half-maximum (FWHM), and wide-range OD6 out-of-band blocking from 300 nm to 1200 nm. This is a multi-cavity filter with steep edges, a flat top, and transmission that is greater than 80% at 397.7 nm. This ultra-narrowband filter is coated on a 3 mm thick N-BK7 substrate and mounted in a 32 mm (± 0.1 mm) diameter, 7 mm (± 0.1 mm) thick anodized aluminum ring. Alluxa ultra-narrow bandpass filters have the highest transmission and narrowest bandwidths currently available. And because they are hard-coated using our innovative SIRRUS™ plasma deposition process, all Alluxa optical filters are highly durable and resistant to laser damage. Contact us for custom sizing options.


Item Number 7215
Angle of Incidence 0 Degrees
Center Wavelength 397.7 nm Nominal
FWHM < 0.45 nm
Transmission Band(s) 397.7 nm > 80% T Absolute
Blocking Level OD6
Blocking Range(s)* OD6: 300 to 389 nm, 406 to 1200 nm
Filter Design Multi-Cavity
Substrate Type N-BK7
Dimensions 32.0 mm Diameter
Filter Thickness 3.0 mm
Assembly Type Anodized Aluminum Ring
Assembly Thickness 7.0 mm

Availability: In stock

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