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  6. 20CMS-45

Cold Mirror, 50.8 x 50.8 mm, 45° AOI, 780-2500 nm Transmittance

  • Type
    Cold Mirror
  • Optic Size
    50.8 x 50.8 mm
  • Transmittance Range
    780-2500 nm
  • Transmission
    Tavg≥85% 780-850 nm; Tavg≥80% 850-2500 nm
  • Reflectance Band
    400-700 nm
  • Reflectance
    Ravg≥95%
  • Angle of Incidence
    45° ±5°
  • Material
    Borofloat® borosilicate float glass
  • Surface Quality
    80-50 scratch-dig
  • Surface Flatness
    6–8λ per 25.4 mm at 546.1 nm over the clear aperture
  • Thickness
    3.3 mm
  • Thickness Tolerance
    ±0.2 mm
  • Size Tolerance
    ±0.4 mm
  • Clear Aperture
    ≥central 90% of dimensions
  • Temperature Range
    -100 to 500°C
  • Cleaning
    See How to Clean Optics
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