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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
$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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Diameter Unhoused / Unmounted
Rectangular Unhoused / Unmounted
Housed / Mounted
Diameter: mmDimension 1: mm
Dimension 2: mm 
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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
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
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.)
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

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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