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409 nm blocking edge BrightLine® long-pass filter

Part Number: FF02-409/LP-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.
Semrock Optical Filter: FF02-409/LP  FF02  409/LP
409 nm blocking edge BrightLine® long-pass filter
Individual fluorescence long-pass and short-pass filters that have been optimized for use in a variety of fluorescence instruments. All thin-film, hard-coated construction for unsurpassed performance and reliability.
Part NumberSizePrice1Stock StatusQuantity
FF02-409/LP-2525 mm x 3.5 mm$305In StockAdd To Cart
FF02-409/LP-3232 mm x 3.5 mm$500Ships in 2 daysAdd To Cart
FF02-409/LP-23.3-D23.3 mm x 2.0 mm
(unmounted)
$305Ships in 2 daysAdd To Cart

Don’t see a size you need? Create your own custom sized part – available in less than a week.

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Custom Sizing Limits:
Diameter Range: 5mm - 50.8mm
Rectangular Dimensions: 5mm - 50.8mm

Substrate thickness/tolerance as listed on Specifications tab.
Dimensional tolerances are ±0.1mm for unhoused parts.

For sizes outside the limits listed above, please contact customer service at 1-866-SEMROCK



1) US domestic pricing only. If you are ordering from outside the US, please contact your nearest regional distributor for the correct list price.
Optical Specifications
SpecificationValue
Transmission Band 1Tavg > 93% 417 – 1100 nm
Edge Wavelength 1415 nm
Blocking Band 1ODavg > 2 200 – 352 nm
Blocking Band 2ODavg > 10 352 – 402 nm (Design specification - measurements are noise-floor limited)
Blocking Band 3OD > 3.5 409.5 nm

General Filter Specifications
SpecificationValue
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.
Effective Index2.06

Physical Filter Specifications (Applies to standard sized parts. Contact us regarding other sizes.)
SpecificationValue
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
Scratch-Dig60-40
Substrate Thickness (unmounted)2.0 mm
Substrate Thickness Tolerance (unmounted)± 0.1 mm
OrientationArrow on ring indicates preferred direction of propagation of light


409/LP Long pass Long-pass Longpass LWP Long-Wave-Pass FF02-409/LP FF02 FF02-409/LP-25 FF02-409/LP-32 FF02-409/LP-23.3-D

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