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67-989

Optical Lens by Edmund Optics
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The 67-989 from Edmund Optics is a Optical Lens with Wavelength Range 750 to 1550 nm, Focal Length -18 mm, Center Thickness 2.25 mm, Diameter 9 mm, Radius -14.12 mm. More details for 67-989 can be seen below.

Product Specifications

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Product Details

  • Part Number
    67-989
  • Manufacturer
    Edmund Optics
  • Description
    9.0mm Diameter x -18 FL, NIR II Coated, Plano-Concave Lens

General Parameters

  • Sub Type
    Plano-Concave Lens
  • Lens Shape
    Spherical Lens
  • Wavelength Range
    750 to 1550 nm
  • Design Wavelength
    587.6 nm
  • Focal Length
    -18 mm
  • Focal Length Tolerance
    ±1 %
  • Back Focal Length(BFL)
    -19.26 mm
  • Effective Focal Length(EFL)
    -18 mm
  • Center Thickness
    2.25 mm
  • Center Thickness Tolerance
    ±0.1 mm
  • Diameter
    9 mm
  • Radius
    -14.12 mm
  • Radius 1
    -14.12 mm
  • Diameter Tolerance
    +0.00/-0.10 mm
  • Aperture(f-number)
    2
  • Edge Thickness(ET)
    2.89 mm
  • Centration Error
    3 - 5 arcmin
  • Substrate/Material
    N-SF11
  • Surface Quality
    40-20 scratch-dig
  • RoHS
    Yes
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