661/20 nm BrightLine^® single-band bandpass filter

Semrock Part Number: FF01-661/20-25

IDEX Part Number: FL-004566 /

Optical Specifications	Value
Transmission Band 1	Tavg > 90% 651 – 671 nm
Blocking Band 1	ODavg > 3 200 – 275 nm (Design specification - measurements are noise-floor limited).
Blocking Band 2	ODavg > 3 275 – 400 nm
Blocking Band 3	ODavg > 4 400 – 440 nm
Blocking Band 4	ODavg > 6 440 – 640 nm
Blocking Band 5	OD > 3.5 642 nm
Blocking Band 6	OD > 3.5 680.5 nm
Blocking Band 7	ODavg > 4 681 – 750 nm
Blocking Band 8	ODavg > 3 750 – 1200 nm
Center Wavelength 1	661 nm
Guaranteed Minimum Bandwidth 1	20 nm
FWHM Bandwidth 1 (nominal)	26.3 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)	5.0 mm
Filter Thickness Tolerance (mounted)	± 0.1 mm
Clear Aperture	≥ 21 mm
Scratch-Dig	60-40
Filter Thickness (unmounted)	3.5 mm
Filter Thickness Tolerance (unmounted)	± 0.1 mm
Orientation	Arrow on ring indicates preferred direction of propagation of light

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Available on

FF01-661/11-25

FL-004399 / 0

T_avg > 93% 655.5 – 666.5 nm
Center Wavelength of 661 nm and GMBW of 11 nm
FWHM of 14.1 nm

Available on

FF01-665/150-25

FL-003960 / 0

T_avg > 93% 590 – 740 nm
Center Wavelength of 665 nm and GMBW of 150 nm
FWHM of 154.2 nm

Available on

FF01-670/30-25

FL-004092 / 0

T_avg > 95% 655 – 685 nm
Center Wavelength of 670 nm and GMBW of 30 nm
FWHM of 37.3 nm

Available on

FF01-692/LP-25

FL-004635 / 0

• Filter with 50% edge at 702 nm
• T_avg > 93% 707 – 752 nm

Available on

FF01-650/SP-25

FL-009642 / 0

Filter with 50% edge at 638 nm
T_avg > 85% 360 – 634 nm

Available on

FF640-FDi01-25x36

FL-006976 / 0

Imaging Dichroic Beamsplitter with edge at 640 nm
R_avg > 95% 350 – 629.5 nm
T_avg > 93% 652 – 950 nm
Common Fluorophore Pair to Split: Cy3/Cy5
Flatness / RWE: Image-splitting

Available on

FF685-Di02-25x36

FL-007099 / 0

Dichroic Beamsplitter with edge at 685 nm
R_avg > 98% 350 – 676 nm
T_avg > 93% 695 – 950 nm
Flatness / RWE: Standard Epi-fluorescence

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Topic	Description
Cleaning Optical Filters	Instructions for cleaning hard coated optical filters
Filter Reliability	Compares 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

Optical Specifications: Value
Transmission Band 1: Tavg > 90% 651 – 671 nm
Blocking Band 1: ODavg > 3 200 – 275 nm (Design specification - measurements are noise-floor limited).
Blocking Band 2: ODavg > 3 275 – 400 nm
Blocking Band 3: ODavg > 4 400 – 440 nm
Blocking Band 4: ODavg > 6 440 – 640 nm
Blocking Band 5: OD > 3.5 642 nm
Blocking Band 6: OD > 3.5 680.5 nm
Blocking Band 7: ODavg > 4 681 – 750 nm
Blocking Band 8: ODavg > 3 750 – 1200 nm
Center Wavelength 1: 661 nm
Guaranteed Minimum Bandwidth 1: 20 nm
FWHM Bandwidth 1 (nominal): 26.3 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): 5.0 mm
Filter Thickness Tolerance (mounted): ± 0.1 mm
Clear Aperture: ≥ 21 mm
Scratch-Dig: 60-40
Filter Thickness (unmounted): 3.5 mm
Filter Thickness Tolerance (unmounted): ± 0.1 mm
Orientation: Arrow on ring indicates preferred direction of propagation of light