ALKOR Technologies - your CRYSTAL optics supplier.   ALKOR Technologies - your CRYSTAL optics supplier.
ALKOR Technologies - your CRYSTAL optics supplier.
Materials>> Germanium>> Germanium plano-convex lenses

Custom Germanium Lenses. Germanium plano-convex lenses.

Alkor Technologies - manufacturer of Germanium Lenses for Thermal Imaging, Pyrometry, Spectroscopy.

Germanium lenses features:

  • Wavelength Range 2-14Ám
  • High Index of Refraction
  • Minimal Chromatic Abberation Due to Low Dispersion
  • Rugged, Durable Material
  • AR coating for 2-12Ám or 8-12Ám and DLC coating for 8-12Ám

Contact our Sales Team and we will try to offer best price on Germanium lenses. If you do not see a suitable size or focal length, write a request, we will make a lens according to your specifications at no additional cost. Hemispherical Germanium lenses available.

Germanium lenses

Germanium plano-convex lens with high transmission AR 8-14Ám or 2-13Ám or DLC/AR coating
Cat# Dia,in Dia,mm FOC,mm CT,mm R,mm ET,mm
Ge-px-7.35-7 0.29 7.35 7 1.5 21 á
Ge-px-11.5-5.3 0.45 11.5 5.3 1.71 16 0.65
Ge-px-12.7-25 0.5 12.7 25.4 2.3 76.05 2.0
Ge-px-12.7-50 0.5 12.7 50.8 2.1 151.01 2.0
Ge-px-13.8-15 0.54 13.8 15 1.5 45 0.97
Ge-px-25.4-50 1.0 25.4 50.8 2.5 151.01 2.0
Ge-px-25.4-63 1.0 25.4 63.5 2.4 188.80 2.0
Ge-px-25.4-76 1.0 25.4 75.0 2.4 229.10 2.0
Ge-px-25.4-100 1.0 25.4 100 2.3 299.90 2.0
Ge-px-25.4-127 1.0 25.4 127 2.2 376.7 2.0
Ge-px-25.4-150 1.0 25.4 150 2.2 452.9 2.0
Ge-px-25.4-200 1.0 25.4 200 2.2 597.16 2.0
Ge-px-25.4-254 1.0 25.4 254 2.1 748.20 2.0
Ge-px-25.4-500 1.0 25.4 500 2.0 1500 2.0
Ge-px-28-21.7 1.1 28 21.7 2 65 -
Ge-px-38.1-50 1.5 38.1 50.8 3.2 151.01 2.0
Ge-px-38.1-63 1.5 38.1 63.5 3.0 188.80 2.0
Ge-px-38.1-76 1.5 38.1 75.0 2.8 229.1 2.0
Ge-px-38.1-100 1.5 38.1 100 2.6 299.9 2.0
Ge-px-38.1-127 1.5 38.1 127 2.5 376.7 2.0
Ge-px-38.1-150 1.5 38.1 150 2.4 452.90 2.0
Ge-px-38.1-200 1.5 38.1 200 2.3 597.16 2.0
Ge-px-38.1-254 1.5 38.1 254 2.2 748.2 2.0
Ge-px-38.1-500 1.5 38.1 500 2.1 1500.0 2.0
Ge-px-50.8-76 2.0 50.8 75 4 229.1 2.6
Ge-px-50.8-100 2.0 50.8 100 3.6 299.90 2.5
Ge-px-50.8-127-AR/AR 8-14Ám (3pcs in stock) 2.0 50.8 127 3.3 376.7 2.5
Ge-px-50.8-150 2.0 50.8 150 3.2 452.9 2.5
Ge-px-50.8-200 2.0 50.8 200 3.0 597.16 2.5
Ge-px-50.8-254 2.0 50.8 254 2.9 748.2 2.5
Ge-px-50.8-300 2.0 50.8 300 2.9 900 2.5
Ge-px-50.8-500 2.0 50.8 500 2.7 1500 2.5
Ge-px-76.2-150 3.0 76.2 150 4.7 452.9 3.1
Ge-px-76.2-200 3.0 76.2 200 4.3 597.16 3.1
Ge-px-76.2-254 3.0 76.2 254 4.0 748.2 3.0
Ge-px-76.2-500 3.0 76.2 500 3.5 1500.0 3.0

Any other custom shape, size and focal length are available upon request.

Ge lenses with yellow mark are available on stock and can be shipped within 1-2 weeks. Ask now.


Planoconvex Germanium lens

Custom Germanium Lenses for Thermal Imaging Cameras, Infrared spectroscopy and Remote Sensing are available in any size and configuration at very competitive price. Anti-reflection coatings can be applied on Germanium lenses for 2-14Ám and 8-14Ám depending on your custom application. Germanium (Ge) plano-convex Lenses are ideal for use in Mid-Wave Infrared (MWIR) and Long-Wave Infrared (LWIR) applications. Additionally, Germaniumĺs Knoop Hardness of 780 is well suited for rugged environments. Due to thermal runaway, or the decrease in transmission as temperature increases, Germanium (GE) Lenses should be used at temperatures below 100░C.

Standard Specifications High Precision
Material Germanium optical monocrystal
Dimensions ▒ 0.00/-0.10mm +0.00/-0.03
Thickness ▒ 0.10mm ▒0.05
Focal length tolerance: +/-1% at 10.6microns +/-1% at 10.6microns
Surfaces 60/40 40/20
Edges Fine Ground
Surface irregularity ≤5 Fringes 0.2-0.5 Fringes
Centration 3 Arc mins 1 arc min

Please do not hesitate to contact us for pricing for any custom size and coatings requirements. Special prices on large diameter Ge optics!

See Also: Silicon lenses ; ZnSe lenses