640/20 nm BrightLine® single-band bandpass filter

Semrock Part Number: FF01-640/20-25

IDEX Part Number: FL-004625  /

Semrock
Individual fluorescence bandpass filters that have been optimized for use in a variety of fluorescence instruments. All thin-film, hard-coated construction for unsurpassed performance and reliability.
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  • 420.00 USD Each
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Optical Specifications Value
Transmission Band 1 Tavg > 90% 630 – 650 nm
Blocking Band 1 ODavg > 5 300 – 617 nm
Blocking Band 2 ODavg > 4 @ 620 nm
Blocking Band 3 ODavg > 5 663 – 1050 nm
Center Wavelength 1 640 nm
Guaranteed Minimum Bandwidth 1 20 nm
FWHM Bandwidth 1 (nominal) 26.6 nm
General Filter Specifications Value
Angle of Incidence 0 ± 5 degrees
Cone Half-angle 7 degrees
Optical Damage Rating Testing 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 hours.
Physical Filter Specifications   Value
Transverse Dimensions (diameter) 25 mm
Transverse Tolerance + 0.0 / – 0.1 mm
Filter Thickness (mounted) 3.5 mm
Filter Thickness Tolerance (mounted) ± 0.1 mm
Clear Aperture ≥ 22 mm
Scratch-Dig 60-40
Filter Thickness (unmounted) 2.0 mm
Filter Thickness Tolerance (unmounted) ± 0.1 mm
Orientation Arrow on ring indicates preferred direction of propagation of light
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 Density Tables to describe the relationship between OD and transmission with tips for quickly calculating OD

Specifications

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 Density Tables to describe the relationship between OD and transmission with tips for quickly calculating OD