317.5-1.8 OD6 Ultra Narrow Bandpass Filter



317.5-1.8 OD6 Ultra Narrow Bandpass Filter


Ultra-narrowband optical interference filter with a 317.5 nm center wavelength (CWL), a 1.8 nm full-width at half-maximum (FWHM), and wide-range out-of-band blocking from 200 nm to 1200 nm. This is a multi-cavity filter with exceptionally steep edges, a flat top, and transmission that is greater than 70% at 317.5 nm. This ultra-narrowband filter is coated on a 2 mm thick fused silica substrate and mounted in a 25 mm (+0/-0.1 mm) diameter, 3.5 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 7030
Angle of Incidence 0 Degrees
Center Wavelength 317.5 nm Nominal
FWHM < 2.0 nm
Transmission Band(s) 317.5 nm > 70% T Absolute
Blocking Level OD6
Blocking Range(s)* OD6: 200 to 308 nm; OD5: 328 to 700 nm; OD3: 700 to 1200 nm
Filter Design Multi-Cavity
Substrate Type Fused Silica
Dimensions 25.0 mm Diameter
Filter Thickness 2.0 mm
Assembly Type Anodized Aluminum Ring
Assembly Thickness 3.5 mm

Availability: In stock

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