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525/50 nm BrightLine® single-band bandpass filter

Part Number: FF01-525/50-25

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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% 500 – 550 nm
Center Wavelength 1525 nm
Guaranteed Minimum Bandwidth 150 nm
FWHM Bandwidth 1 (nominal)56.9 nm
Blocking Band 1ODavg > 5 200 – 400 nm
Blocking Band 2ODavg > 5 400 – 446 nm
Blocking Band 3ODavg > 10 446 – 486 nm (Design specification - measurements are noise-floor limited)
Blocking Band 4OD > 3.5 493 nm
Blocking Band 5ODavg > 5 560.5 – 700 nm
Blocking Band 6ODavg > 2.5 700 – 925 nm
Blocking Band 7ODavg > 2 925 – 1100 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.

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)5.0 mm
Filter Thickness Tolerance (Mounted)± 0.1 mm
Clear Aperture≥ 21 mm
Substrate Thickness (unmounted)3.5 mm
Substrate Thickness Tolerance (unmounted)± 0.1 mm
OrientationArrow on ring indicates preferred direction of propagation of light

Revised Filter


525/50 nm BrightLine® single-band bandpass filter

• Tavg > 93% 500 – 550 nm
• Center Wavelength of 525 nm and GMBW of 50 nm
• FWHM of 55.9 nm

Custom sizing delivery confirmed ARO (sizing fee applies).
Part # FF03-525/50-25
(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


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