Optical Filter by eSource Optics

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The 50161FNB from eSource Optics is a Vacuum UV (VUV) optical bandpass filter that allows transmission at a peak wavelength of 161 nm. It has a bandwidth (FWHM) of 20 nm and wavelength tolerance of ± 2.5 nm. This optical filter has a minimum optical peak transmission of 12% and blocks approximately 10-3 UV through FIR. The edge chamfer of this optical filter measures nearly 0.5 mm x 45 degrees and has a clear aperture of 80% (central). It has an unmounted and open-faced design with a parallelism of 5 arc minutes. This narrowband optical filter has a diameter of 50.8 mm ± 0.25 mm and thickness of 1.5 mm - 5 mm.

Product Specifications

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Product Details

  • Part Number
  • Manufacturer
    eSource Optics
  • Description
    50.8 mm Dia, VUV Optical Bandpass Filter

General Parameters

  • Filter Type
    Bandpass Filter
  • Glass Color
  • Wavelength
    161 nm
  • Wavelength Tolerance
    ±2.5 nm
  • Bandwidth (FWHM)
    20 nm
  • FWHM Tolerance
    ±7.5 nm
  • Bandwidth
    20 nm
  • Chamfers
    0.5 mm x 45 Degree
  • Clear Aperture
  • Parallelism
    5 arc mins
  • Transmission

Physical Properties

  • Filter Shape
  • Substrate/Material
    MgF2, CaF2, UV Fused Silica
  • Thickness
    1.5 to 2.5 mm
  • Filter Diameter
    50.8 mm
  • Diameter Tolerance
    ±0.8 mm
  • Surface Quality
    20-10 scratch-dig, 40-20 scratch-dig

Technical Documents

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