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532/640 nmBrightLine® dual-band bandpass filter

Part Number: FF01-532/640-25

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  • Your filter spectrum may differ slightly from the typical spectrum above, but is certified to meet the optical specifications noted below.
Optical Specifications
Transmission Band 1Tavg > 95% 531 – 533 nm
Center Wavelength 1532 nm
Guaranteed Minimum Bandwidth 12 nm
FWHM Bandwidth 1 (nominal)18.3 nm
Transmission Band 2Tavg > 95% 635 – 645 nm
Center Wavelength 2640 nm
Guaranteed Minimum Bandwidth 210 nm
FWHM Bandwidth 2 (nominal)19.4 nm
Blocking Band 1ODabs > 3 540 – 620 nm
Blocking Band 2OD > 5 657 – 700 nm
Blocking Band 3OD > 3 700 – 750 nm

General Filter Specifications
Angle of Incidence0 ± 5 degrees
Cone Half-angle7 degrees
Optical Damage RatingTesting has proven to show no signs of degradation when exposed to at least 6.0 W of power from an unfiltered xenon arc lamp over a 25 mm diameter (corresponding to 1.2 W/cm2) for over 500 hrs.
Filter Effective Index1.91 Understanding ‘Effective Index of Refraction’ neff

Physical Filter Specifications (applies to standard sized parts; contact us regarding other sizes)
Transverse Dimensions (Diameter)25 mm
Transverse Tolerance (mounted)+ 0.0 / – 0.1 mm
Filter Thickness (Mounted)3.5 mm
Filter Thickness Tolerance (Mounted)± 0.1 mm
Clear Aperture≥ 22 mm
Substrate Thickness (unmounted)2.0 mm
Substrate Thickness Tolerance (unmounted)± 0.1 mm
OrientationArrow on ring indicates preferred direction of propagation of light

Closest Alternate Filter


534/635 nm BrightLine® dual-band bandpass filter

• Tavg > 90% 516 – 552 nm & Tavg > 90% 619.5 – 650.5 nm
• Center Wavelengths of 534 nm & 635 nm and GMBWs of 36 nm & 31 nm

Custom sizing delivery confirmed ARO (sizing fee applies).
Part # FF01-534/635-25
(Non-US pricing info)

US domestic pricing only. If you are ordering from outside the US, please contact your nearest regional distributor for the correct list price.
Tech Note
Cleaning Optical FiltersInstructions for cleaning hard coated optical filters
Filter ReliabilityCompares the performance and reliability of hard coated filters to traditional soft-coated filters and provides information about the testing standards for Semrock filters
Working with Optical DensityTables to describe the relationship between OD and transmission with tips for quickly calculating OD
Multiband Filter Set TerminologyCompares benefits and drawbacks of full multiband, pinkel and sedat filter sets


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