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  6. 20DC2000ER.1

Concave Metallic Mirror, 50.8 mm, 1000 mm Focal Length, 450-700 nm

  • Wavelength Range
    450-700 nm
  • Mirror Shape
    Concave
  • Diameter
    50.8 mm
  • Effective Focal Length (EFL)
    1000 mm
  • F/#
    19.7
  • Radius of Curvature (R)
    -2000 mm
  • Material
    Borofloat® 33
  • Coating Type
    Enhanced Aluminum
  • Coating Code
    ER.1
  • Angle of Incidence
    0-15°
  • Reflectivity
    Ravg>93%, Rmin>90 % @ 450-700 nm
  • Damage Threshold
    0.5 J/cm² with 10 ns pulses at 532 nm, 20Hz
  • Surface Quality
    40-20 scratch-dig
  • Surface Flatness
    λ/4 at 632.8 nm
  • Back Surface
    Fine ground
  • Edge Thickness (Te)
    9.65 mm
  • Center Thickness (Tc)
    9.37 mm
  • Thickness Tolerance
    ±0.25 mm
  • Diameter Tolerance
    +0/-0.13 mm
  • Wedge
    ≤0.03 mm
  • Chamfers
    0.25–0.76 mm face width
  • Cleaning
    See How to Clean Optics
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