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425/524/688 nm BrightLine® triple-band bandpass filter

Part Number: FF01-425/524/688-25

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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 > 90% 412 - 438 nm
Center Wavelength 1425nm
Guaranteed Minimum Bandwidth 126 nm
FWHM Bandwidth 1 (nominal)29.4 nm
Transmission Band 2Tavg > 90% 501 - 547 nm
Center Wavelength 2524 nm
Guaranteed Minimum Bandwidth 246 nm
FWHM Bandwidth 2 (nominal)50.0 nm
Transmission Band 3Tavg > 90% 617 - 758 nm
Center Wavelength 3688 nm
Guaranteed Minimum Bandwidth 3141nm
FWHM Bandwidth 3 (nominal)144.0 nm
Blocking Band 1ODavg > 5 200 - 405 nm
Blocking Band 2ODavg > 5 445 - 493 nm
Blocking Band 3ODavg > 5 555 - 610 nm
Blocking Band 4ODavg > 5 770 - 950 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 Index2.06 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


432/523/702 nm BrightLine® triple-band bandpass filter

• Tavg > 93% 414 – 450 nm, Tavg > 93% 499.5 – 546 nm & Tavg > 93% 604 – 800 nm
• Center Wavelengths of 432 nm, 522.8 nm & 702 nm and GMBWs of 36 nm, 46.5 nm & 196 nm

Custom sizing delivery confirmed ARO (sizing fee applies).
Part # FF01-432/523/702-25
(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

425/524/688 FF01-425/524/688

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