Optical Specifications	Value
Transmission Band 1	Tavg > 92% 618.5 – 675.5 nm
Blocking Band 1	ODavg > 5 200 – 275 nm (Design specification - measurements are noise-floor limited).
Blocking Band 2	ODavg > 5 275 – 601 nm
Blocking Band 3	ODabs > 3.3 601 – 606 nm
Blocking Band 4	ODabs > 3.3 690 – 695 nm
Blocking Band 5	ODavg > 5 695 – 950 nm
Center Wavelength 1	647 nm
Guaranteed Minimum Bandwidth 1	57 nm
FWHM Bandwidth 1 (nominal)	70 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

647/57 nm BrightLine® single-band bandpass filter

Specifications