638 BPF

SKU ZX000879(Ø12.5mm)      SKU ZX000812(Ø25.0mm)
Optical Specifications
Center Wavelength (nm)                 638
Transmittance (%)                 >90
FWHM (nm)                 2.2 (typical)
OD 3 Blocking Bandwidth (nm)                 4.5
Blocking Range (nm)                 300 - 1200
Blocking Level (OD)                 >3
Angle of Incidence (degrees)                 0
Physical Specifications
Filter thickness (mm)                 3
Clear Aperture (mm)                 8 (12.5 mm) or 21 (25 mm)
Outer Diameter (mm)                 12.5 + 0 / -0.1 (12.5mm) or 25 + 0 / -0.2 (25mm)
Ring mounted                 Yes
Ring Thickness (mm)                 5
Scratch / Dig                 80 / 50

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