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628/32 nm BrightLine® single-band bandpass filter

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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.

Note on spectral plots:
In the past, each shipment has included a spectral plot for every filter and every lot code in the shipment. In an effort to be more eco-friendly, we will no longer be including these plots with each shipment. If you require spectral plot data, please see here for more information.

Optical Specifications
Transmission Band Tavg > 93% 612 – 644 nm
Transmission Wavelength 628 nm
Transmission Wavelength Range 612 – 644 nm
FWHM Bandwidth 38.2 nm
Blocking Band ODavg > 4 200 – 576 nm
ODavg > 10 576 – 596 nm (Design specification – measurements are noise-floor limited)
OD > 3.5 604 nm
ODavg > 5 657 – 925 nm
ODavg > 2 925 – 1100 nm
General Specifications
Angle of Incidence 0 ± 5 °
Cone Half-angle 7 °
Filter Effective Index 1.92 Understanding ‘Effective Index of Refraction’ neff
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 hrs.
Physical Specifications (for standard parts – please contact us for custom sizes)
Mounted / Unmounted Mounted
Shape Round
Size 25 x 3.5 mm
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
Surface Quality (Scratch-Dig) 60-40
Substrate Thickness 2.0 mm
Substrate Type Low-autofluorescence optical quality glass
Orientation Arrow on ring indicates preferred direction of propagation of light


  • Mounted
  • Size: 25 x 3.5 mm


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Optical Density

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Semrock Spectral Plot Info

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