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665 nm blocking edge BrightLine® short-pass filter

Part Number: FF01-665/SP-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: FF01-665/SP  FF01  665/SP
665 nm blocking edge BrightLine® short-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
FF01-665/SP-2525 mm x 5.0 mm$405In StockAdd To Cart


This part is not available for custom sizing.


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% 380 – 615 nm
Edge Wavelength 1639 nm
Blocking Band 1ODavg >2 665 - 1100 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.
Filter Effective Index1.74 Understanding ‘Effective Index of Refraction’ neff

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)5.0 mm
Filter Thickness Tolerance (Mounted)± 0.1 mm
Clear Aperture≥ 21 mm
Scratch-Dig60-40
Substrate Thickness (unmounted)3.5 mm
Substrate Thickness Tolerance (unmounted)± 0.1 mm
OrientationArrow on ring indicates preferred direction of propagation of light

Tech Note
TopicDescription
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

665/SP FF01-665/SP FF01-665/SP-25

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