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  7. UVBS17-1

UV Beamsplitter, 40.0 mm Diameter, 4.00 mm Thickness, 50R/50T ratio

  • Wavelength Range
    250-450 nm
  • Diameter
    40.0 mm
  • Material
    UV Grade Fused Silica
  • Coating Second Surface
    AR (Ravg <1%, Rabs <2%)
  • Angle of Incidence
    45°±3°
  • Reflection
    Rabs = 50 ±5% @ 350 nm, Ravg = 50 ±10% @ 250-450 nm
  • Transmission
    Tabs = 50 ±5% @ 350 nm, Tavg = 50 ±10% @ 250-450 nm
  • Surface Flatness
    ≤1 λ at 632.8 nm over the clear aperture
  • Surface Quality
    60-40 scratch-dig
  • Diameter Tolerance
    +0.0/-0.2 mm
  • Thickness
    4.0 mm  
  • Thickness Tolerance
    ±0.38 mm
  • Parallelism
    < 5 arc minutes
  • Clear Aperture
    > central 85% of diameter
  • Chamfers Angle Tolerance
    45° ±15°
  • Cleaning
    See How to Clean Optics
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