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700-1100nm AR Negative Lens

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700-1100nm AR Negative Lens

The negative lenses are often used in combination with planoconvex lenses to expand a beam diameter or make a different combination focal length while decreasing the residual spherical aberration

  • Diameter tolerance: +0/-0,1mm
  • Thickness tolerance: +/-0.1mm
  • Focal length is calculated at 546.1nm
  • Surfaces accuracy: λ/4 @632,8nm
  • S/D < 60/40
  • Centration: <3 arc minutes
  • Coating (Multi layers): AR<1 %(abs) / 0-15˚
  • Damage threshold of broadband AR coating: >5J/cm^2, 20ns, 20Hz, 1064nm



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