665.85-1 OD6 Ultra Narrow Bandpass Filter



665.85-1 OD6 Ultra Narrow Bandpass Filter


Ultra-narrowband optical interference filter with a 665.85 nm center wavelength (CWL), a 1 nm full-width at half-maximum (FWHM), and wide-range out-of-band blocking from 375 nm to 1100 nm. This is a multi-cavity filter with steep edges, a flat top, and transmission that is greater than 90% at 665.85 nm. This ultra-narrowband filter is coated on a 2 mm thick Borofloat® substrate and mounted in a 50.8 mm (+0/-0.8 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 7052
Angle of Incidence 0 Degrees
Center Wavelength 665.85 nm Nominal
FWHM < 1.2 nm
Transmission Band(s) 665.85 nm > 90% T Absolute
Blocking Level OD6
Blocking Range(s)* OD6: 550 to 657 nm, 674 to 850 nm; OD5: 500 to 550 nm, 850 to 900 nm; OD4: 375 to 500 nm, 900 to 950 nm; OD3: 950 to 1000 nm
Filter Design Multi-Cavity
Substrate Type Borofloat®
Dimensions 50.4 mm Diameter
Filter Thickness 2.0 mm
Assembly Type Anodized Aluminum Ring
Assembly Thickness 3.5 mm

Availability: In stock


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