Bandpass Filter, Colored Glass, 12.7 mm, Blue Bandpass, BG40 Glass

Technical Specs

  • Type
    Colored Glass Bandpass Filter
  • Size
    Ø12.7 mm
  • Center Wavelength
    495 nm
  • Material
    Schott BG40 or equivalent
  • Surface Quality
    60-40 scratch-dig
  • Surface Flatness
    ≤1λ at 632.8 nm over the clear aperture
  • Thickness
    3 mm
  • Thickness Tolerance
    ±0.1 mm
  • Size Tolerance
    ±0.3 mm
  • Clear Aperture
    central ≥ 80% of diameter
  • Angle of Incidence
  • Damage Threshold
    30 W/cm2 CW, typical
  • Wedge
    ≤3 arc min
  • Chamfers
    Up to 1 mm face width
  • Chamfers Angle Tolerance
    45° ±15°
  • Cleaning