Telescope Configuration \ Spatial Filter - 1’’/25mm-1’’/25mm Parabolic mirrors Based with Pinhole (90841)

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The beam Filtering apparatus is based on an optical telescope configuration. The telescope is focused onto a pinhole that filters the higher-order spatial modes of the beam. The 90841/2/3 telescope is based on two off-axis parabolic mirrors (1’’/25mm or 2’’/50mm) with various magnifications. This design allows the use of large focal-length lenses with a small telescope footprint.

Key Benefits

  • Accuracy
  • On the Grid
  • In-line
  • Easy alignment


  • Broadband Collimation
  • Broadband beam expanding
  • Broadband Beam filtering
  • Broadband Microscopy