Gold Member Since 2016
Audited Supplier
Qinhuangdao Intrinsic Crystal Technology Co., Ltd.

Germanium Optical Window, 25mm Germanium Windows, Optical Ge Window manufacturer / supplier in China, offering 25mm Germanium Windows Optical Ge Window, Znse Plano-Convex Biconvex Concave Optical Lens, Viewport – Barium Flouride (BaF2) on CF Flanges and so on.

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25mm Germanium Windows Optical Ge Window

FOB Price: Get Latest Price
Min. Order: 1 Piece
Port: Beijing, China
Production Capacity: 5000
Payment Terms: T/T, Western Union

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Basic Info
  • Model NO.: D5~D300
  • Type: Window
  • Shape: Round
  • Lenses Color: Grey
  • Customized: Customized
  • Trademark: ICC
  • Origin: Qinhuangdao China
  • Usage: Optical
  • Transmittance: >95%
  • Material: Optical Germanium
  • Certification: RoHS, ISO9001
  • Coating: Ar Bbar
  • Transport Package: Wrapped in Silk Paper
  • HS Code: 9001909090
Product Description
Germanium windows, opaque in the UV and visible parts of the spectrum, have a broad transmission range and are well-suited for IR applications.Germanium is a very hard, high-density material - characteristics that are advantageous where robustness is needed. Germanium's high density also makes it heavy, something to be considered when designing it into optical systems where weight is a consideration. Another characteristic of Germanium is thermal runaway, which means that its transmissive properties decrease as temperature increases.
25mm Germanium Windows Optical Ge Window25mm Germanium Windows Optical Ge Window

 Germanium Lens Specification


<111> <100>

Growth Method






Polishing surface



AR coating

Clear aperture


Sphericity uniformity

2 fringe @632.8nm/customized

Sphericity irregularity

1 fringe @632.8nm/customized







windows are used in optical systems to seqarate the environment of one part of the system from another. For CO2-lasers ,ICC offers windows produced from
2.Zinc Selenide
   -AR coated windows
   -Uncoated windows
   -Combined coated windows
  -Brewster windows
  -Gallium Arenide

Utilized for CO2-laser-based heatreating, welding, cutting, drilling, and marking apparatuses.
Baises the plane-convex and meniscus lens shapes already mentioned, ICC supplies biconvex and cylindrical lenses. Customer-made lenses are manufactured upon request.
Zinc selenide, Gallium Arsenide, and Patassium Chloride can be used for production of lenses. Standard ZnSe and GaAs lenses are offered are offered with both surfaces AR coating at 10.6um.KCL lenses are supplied uncoated.

25mm Germanium Windows Optical Ge Window25mm Germanium Windows Optical Ge Window

materialOptical grade monocrystalline Ge
Clear aperture> 90% of size
Diameter (width & length) tolerance, mm+0.0/-0.1
Thickness tolerance, mm+/-0.1
Parallelism, arc. min<=5
Surface quality,scr/digfor parts to 3 in.40/20
for parts to 8 in.60/40
For large parts80/50
surface figure (power-irregularity)@633nm,fringes1~1/2
Coating(residual) reflectivity is specified per surface,%AR/AR@10.6um<0.5
Damage threshold (CW mode,kW/cm2)1
Packaging & Shipping

Germanium Lens  Packaging

1. Shock-proof packing

2. Vacuum packing/soft material in box

3. Case with polyfoam or cystosepiment

25mm Germanium Windows Optical Ge Window
25mm Germanium Windows Optical Ge Window


Q:  Are you a trading company or a factory?A:  We are a factory, which can reduce all cost we can control. 

Q:  What's your advantage?,
A:1.  Price. We are not trading company, we can reduce the cost.
2.  Technology. Our company has 7 years experience on producing silicon products,especially silicon laser scanning mirror, IR silicon lens, silicon wafer and special shape products.
3.  After-sales service. We can be responsible for our quality.
Q:  What's your main products?A:  There are silicon wafer, cutting silicon wafer, silicon CO2 laser reflected mirror, IR silicon/germanium lens, silicon laser scan mirror, silicon sputtering target, silicon/germanium ingot and so on. We can also produce special shape silicon products according to your drawing.

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Miss Lisa (shuaijie.hou)
Sales engineer
To: Miss Lisa (shuaijie.hou)

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