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Si Lens

THz Optics

We offer various Silicon and TPX optics for THz beam guiding.

Please note our new part numbers!

For mapping old to new part numbers please see here!

Old Part No. New Part No.
HSL-12 LSH-D12-T7.13
CSL-20 LSA-D20-T13.77
FSL-D20-f50 LSA-D20-T14-F50
TPX-D25.4-f10 LTA-D25.4-F10
TPX-D25.4-f15 LTA-D25.4-F15
TPX-D25.4-f25 LTA-D25.4-F25
TPX-D25.4-f32.5 LTA-D25.4-F32.5
TPX-D25.4-f50 LTA-D25.4-F50
TPX-D25.4-f67 LTA-D25.4-F67
TPX-D25.4-f100 LTS-D25.4-F100
TPX-D25.4-f150 LTS-D25.4-F150
TPX-D50-f35 LTA-D50-F35
TPX-D50.8-f65 LTA-D50-F65
TPX-D50.8-f100 LTA-D50-F100
TPX-D50.8-f200 LTS-D50-F200
TPX-D50.8-f250 LTS-D50-F250

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TPX Lens

Silicon Optics

  • Highly transmissive silicon optics for THz applications
  • Listed optics are available from stock
  • Anti-Reflex coating on request
  • Other dimensions on request
  • Flyer (PDF)



Silicon Lenses

> LSH-D12-T7.13 (Hyperhemispheric Silicon Lens)


The hyperhemispherical silicon lens (LSH-D12-T7.13) with a diameter of 12 mm has been developed for the control of THz radiation from a GaAs PCA chip and generates a divergent THz beam.
The transmitted THz beam has to be collimated with an additional lens. Therefore we recommend our TPX lens LTA-D25.4-F32.5.

  • Diameter: 12.0 mm
  • Thickness: 7.1 mm
  • Material: Silicon
  • Refractive index: 3.41
  • Transmittance: > 53 % (@ 0.1 - 3.0 THz)
  • Surface: Polished
  • Thickness PCA chip: 0.625 mm
  • Data sheet (PDF)
  • Price: 195.- €

> LSA-D20-T13.77 (Collimating Silicon Lens)


The aspheric collimating silicon lens (LSA-D20-T13.77) with a diameter of 20 mm has been developed for the control of THz radiation from a GaAs PCA chip and generates a collimated THz beam.

  • Diameter: 20 mm
  • Thickness: 13.77 mm
  • Material: Silicon
  • Refractive index: 3.41
  • Transmittance: > 53 % (@ 0.1 - 3.0 THz)
  • Surface: Polished
  • Thickness PCA chip: 0.625 mm
  • Data sheet (PDF)
  • Price: 440.- €

> LSA-D20-T14-F50 (Focusing Silicon Lens)


The aspheric focusing silicon lens with 20 mm of diameter has been developed for the control of THz radiation from a GaAs PCA chip and generates a focused THz beam.

  • Diameter: 20 mm
  • Thickness: 14 mm
  • Material: Silicon
  • Refractive index: 3.41
  • Transmittance: > 53 % (@ 0.1 - 3.0 THz)
  • Surface: Polished
  • Thickness PCA chip: 0.625 mm
  • Data sheet (PDF)
  • Price: 440.- €




Silicon Beam Splitter

> BSS-D50.8-T3.5


The silicon beam splitter (BSS-D50.8-T3.5) has been developed for single pass applications.

  • Diameter: 50.8 mm
  • Thickness: 3.5 mm
  • Parallelism: 30"
  • Material: Silicon
  • Refractive index: 3.41
  • Transmittance: > 53 % (@ 0.1 - 3.0 THz)
  • Surface: Polished
  • Data sheet (PDF)
  • Price: 340.- €

TPX Optics

  • Highly transmissive TPX (Polymethylpentene) optics for THz applications
  • Listed optics are available from stock
  • Other dimensions on request
  • Flyer (PDF)



1" TPX Lenses

> LTA-D25.4-F10


  • Diameter: 25.4 mm
  • Thickness center: 11.2 mm
  • Thickness edge: 3.3 mm
  • Focal length: 10 mm
  • Free aperture: 20 mm
  • Numerical aperture NA: 0.64
  • Material: TPX
  • Refractive index: 1.47
  • Shape: plano-convex (aspheric)
  • Data sheet (PDF)
  • Price unmounted: 210.- €
  • Price mounted: 235.- €

For measurements with a high spatial resolution we recommend the combination of two LTA-D25.4-F10 in a pinhole setup.

> LTA-D25.4-F15


  • Diameter: 25.4 mm
  • Thickness center: 10.0 mm
  • Thickness edge: 2.5 mm
  • Focal length: 15 mm
  • Free aperture: 22.4 mm
  • Numerical aperture NA: 0.56
  • Material: TPX
  • Refractive index: 1.47
  • Shape: plano-convex (aspheric)
  • Data sheet (PDF)
  • Price unmounted: 210.- €
  • Price mounted: 235.- €

> LTA-D25.4-F25


  • Diameter: 25.4 mm
  • Thickness center: 8.0 mm
  • Thickness edge: 3.1 mm
  • Focal length: 25 mm
  • Free aperture: 22.4 mm
  • Numerical aperture NA: 0.38
  • Material: TPX
  • Refractive index: 1.47
  • Shape: plano-convex (aspheric)
  • Data sheet (PDF)
  • Price unmounted: 210.- €
  • Price mounted: 235.- €

> LTA-D25.4-F32.5


  • Diameter: 25.4 mm
  • Thickness center: 8.0 mm
  • Thickness edge: 4.2 mm
  • Focal length: 32.5 mm
  • Free aperture: 22.4 mm
  • Numerical aperture NA: 0.30
  • Material: TPX
  • Refractive index: 1.47
  • Shape: plano-convex (aspheric)
  • Data sheet (PDF)
  • Price unmounted: 210.- €
  • Price mounted: 235.- €

> LTA-D25.4-F50


  • Diameter: 25.4 mm
  • Thickness center: 7.0 mm
  • Thickness edge: 4.4 mm
  • Focal length: 50 mm
  • Free aperture: 22.4 mm
  • Numerical aperture NA: 0.21
  • Material: TPX
  • Refractive index: 1.47
  • Shape: plano-convex (aspheric)
  • Data sheet (PDF)
  • Price unmounted: 210.- €
  • Price mounted: 235.- €

> LTA-D25.4-F67


  • Diameter: 25.4 mm
  • Thickness center: 6.9 mm
  • Thickness edge: 5.0 mm
  • Focal length: 67 mm
  • Free aperture: 22.4 mm
  • Numerical aperture NA: 0.16
  • Material: TPX
  • Refractive index: 1.47
  • Shape: plano-convex (aspheric)
  • Data sheet (PDF)
  • Price unmounted: 210.- €
  • Price mounted: 235.- €

> LTS-D25.4-F75


  • Diameter: 25.4 mm
  • Thickness center: 5.9 mm
  • Thickness edge: 4.0 mm
  • Focal length: 72 mm
  • Free aperture: 22.4 mm
  • Numerical aperture NA: 0.14
  • Material: TPX
  • Refractive index: 1.47
  • Shape: plano-convex (spheric)
  • Data sheet (PDF)
  • Price unmounted: 210.- €
  • Price mounted: 235.- €

> LTS-D25.4-F85


  • Diameter: 25.4 mm
  • Thickness center: 5.6 mm
  • Thickness edge: 4.0 mm
  • Focal length: 82 mm
  • Free aperture: 22.4 mm
  • Numerical aperture NA: 0.13
  • Material: TPX
  • Refractive index: 1.47
  • Shape: plano-convex (spheric)
  • Data sheet (PDF)
  • Price unmounted: 210.- €
  • Price mounted: 235.- €

> LTS-D25.4-F100


  • Diameter: 25.4 mm
  • Thickness center: 7.0 mm
  • Thickness edge: 5.6 mm
  • Focal length: 95 mm
  • Free aperture: 22.4 mm
  • Numerical aperture NA: 0.11
  • Material: TPX
  • Refractive index: 1.47
  • Shape: plano-convex (spheric)
  • Data sheet (PDF)
  • Price unmounted: 210.- €
  • Price mounted: 235.- €

> LTS-D25.4-F150


  • Diameter: 25.4 mm
  • Thickness center: 6.0 mm
  • Thickness edge: 5.1 mm
  • Focal length: 150 mm
  • Free aperture: 22.4 mm
  • Numerical aperture NA: 0.07
  • Material: TPX
  • Refractive index: 1.47
  • Shape: plano-convex (spheric)
  • Data sheet (PDF)
  • Price unmounted: 210.- €
  • Price mounted: 235.- €




> LTA-D25.4-FM50


  • Diameter: 25.4 mm
  • Thickness center: 5.0 mm
  • Thickness edge: 7.6 mm
  • Focal length: - 50 mm
  • Free aperture: 21.0 mm
  • Numerical aperture NA: 0.23
  • Material: TPX
  • Refractive index: 1.47
  • Shape: plano-convex (aspheric)
  • Data sheet (PDF)
  • Price unmounted: 210.- €
  • Price mounted: 235.- €




2" TPX Lenses

> LTA-D50-F35


  • Diameter: 50.0 mm
  • Thickness center: 18.0 mm
  • Thickness edge: 3.0 mm
  • Focal length: 35 mm
  • Free aperture: 47.0 mm
  • Numerical aperture NA: 0.53
  • Material: TPX
  • Refractive index: 1.47
  • Shape: plano-convex (aspheric)
  • Data sheet (PDF)
  • Price unmounted: 330.- €
  • Price mounted: 360.- €

> LTA-D50-F65


  • Diameter: 50.0 mm
  • Thickness center: 13.0 mm
  • Thickness edge: 4.0 mm
  • Focal length: 65 mm
  • Free aperture: 47.0 mm
  • Numerical aperture NA: 0.33
  • Material: TPX
  • Refractive index: 1.47
  • Shape: plano-convex (aspheric)
  • Data sheet (PDF)
  • Price unmounted: 330.- €
  • Price mounted: 360.- €

> LTA-D50-F85


  • Diameter: 50.0 mm
  • Thickness center: 10.0 mm
  • Thickness edge: 3.2 mm
  • Focal length: 85 mm
  • Free aperture: 47.0 mm
  • Numerical aperture NA: 0.26
  • Material: TPX
  • Refractive index: 1.47
  • Shape: plano-convex (aspheric)
  • Data sheet (PDF)
  • Price unmounted: 330.- €
  • Price mounted: 360.- €

> LTA-D50-F100


  • Diameter: 50.0 mm
  • Thickness center: 10.0 mm
  • Thickness edge: 4.0 mm
  • Focal length: 100 mm
  • Free aperture: 47.0 mm
  • Numerical aperture NA: 0.22
  • Material: TPX
  • Refractive index: 1.47
  • Shape: plano-convex (aspheric)
  • Data sheet (PDF)
  • Price unmounted: 330.- €
  • Price mounted: 360.- €

> LTS-D50-F200


  • Diameter: 50.0 mm
  • Thickness center: 8.3 mm
  • Thickness edge: 5.0 mm
  • Focal length: 200 mm
  • Free aperture: 47.0 mm
  • Numerical aperture NA: 0.12
  • Material: TPX
  • Refractive index: 1.47
  • Shape: plano-convex (spheric)
  • Data sheet (PDF)
  • Price unmounted: 330.- €
  • Price mounted: 360.- €

> LTS-D50-F250


  • Diameter: 50.0 mm
  • Thickness center: 8.0 mm
  • Thickness edge: 5.5 mm
  • Focal length: 250 mm
  • Free aperture: 47.0 mm
  • Numerical aperture NA: 0.10
  • Material: TPX
  • Refractive index: 1.47
  • Shape: plano-convex (spheric)
  • Data sheet (PDF)
  • Price unmounted: 330.- €
  • Price mounted: 360.- €




> LTA-D50-FM75


  • Diameter: 50.0 mm
  • Thickness center: 5.0 mm
  • Thickness edge: 13.9 mm
  • Focal length: - 75 mm
  • Free aperture: 44.3 mm
  • Numerical aperture NA: 0.33
  • Material: TPX
  • Refractive index: 1.47
  • Shape: plano-convex (aspheric)
  • Data sheet (PDF)
  • Price unmounted: 330.- €
  • Price mounted: 360.- €




TPX Windows

> WT-D25.4-T2


  • Diameter: 25.4 mm
  • Thickness: 2.0 mm
  • Material: TPX
  • Refractive index: 1.47
  • Shape: plano-plano
  • Data sheet (PDF)
  • Price: 130.- €

> WT-D25.4-T3.5


  • Diameter: 25.4 mm
  • Thickness: 3.5 mm
  • Material: TPX
  • Refractive index: 1.47
  • Shape: plano-plano
  • Data sheet (PDF)
  • Price: 130.- €

> WT-D50-T3.5


  • Diameter: 50.0 mm
  • Thickness: 3.5 mm
  • Material: TPX
  • Refractive index: 1.47
  • Shape: plano-plano
  • Data sheet (PDF)
  • Price: 230.- €