656.4-0.1 OD4 Ultra Narrow Bandpass Filter
- SPECIFICATIONS
- DESCRIPTION
FWHM< 0.1 nm
Center Wavelength656.4 nm ± 0.05 nm
† Transmission Band(s)656.4 nm > 50% T Absolute
Blocking LevelOD4
* Blocking Range(s)OD4: 380 to 643.2 nm, 669.6 to 1000 nm
Dimensions12.5 mm Diameter
Assembly Thickness
Assembly Type3.5 mm Anodized Aluminum Ring
Filter Thickness2.15 mm
Substrate TypePolished N-BK7
*Auxiliary blocking typical based on the displayed spectrum.
†For filters with less than 1nm bandwidth, measurement limitations may result in slight transmission variation. Please contact us for more information.
Ultra-narrow bandpass optical interference filter is a multi-cavity filter with moderately steep edges and a flat top. 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.