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AR And DLC Coatings Infrared Window , 25.4mm Diameter 8-12um Germanium Windows
AR And DLC Coatings Infrared Window , 25.4mm Diameter 8-12um Germanium Windows
Specifications
Brand Name :
Wuhan Siwer Optics
Place of Origin :
Wuhan,China
MOQ :
1 pieces
Price :
25-100USD/piece
Payment Terms :
T/T, Western Union
Supply Ability :
3000 pieces/month
Delivery Time :
3-5 weeks
Packaging Details :
1.Tissue paper. 2.Plastic foam packaging film. 3.Hard carton box with quakeproof filler
Material :
Single Crystal Germanium
Size tolerance :
+/-0.1mm
Chamfer :
0.2-0.5mm
Surface quality :
40/20
Surface flatness :
Lambda/4
Parallelism :
0.01mm
Standard coating :
AR/DLC@8-14um or customized
Density :
5.33g/cm3
Usage :
Infared system protected window
Clear Aperture :
90%
Description

Infrared Germanium window

The transmittance range of the optical germanium material is 2-14 um, and the refractive index is as high as 4. Germanium lens and germanium window are widely used in thermal imaging system.
Germanium window is a common protective window in infrared imaging system. Its material quality, surface smoothness, parallelism, surface quality and coating quality will directly affect the imaging effect.
The resistivity of optical grade single crystal germanium material we choose is usually 5-40 Ohms. If the customer requests, we can also choose germanium material with specified resistivity.
Due to the high refractive index and high surface reflectivity of germanium (r > 30%), optical germanium windows usually need AR coating on its surface.
If the equipment is used in a bad environment, the outer side of the germanium protection window needs to be coated with DLC Coating.DLC Coating has excellent wear resistance, acid resistance and corrosion resistance.

AR And DLC Coatings Infrared Window , 25.4mm Diameter 8-12um Germanium Windows AR And DLC Coatings Infrared Window , 25.4mm Diameter 8-12um Germanium Windows

Optical Properties of Germanium Window

Material Single Crystal Germanium
AR Coating Range 3-5um,8-12um,3-11um
Reflectance over
AR Coating Range @ 0° AOI

Ravg < 2%,3-5um or 8-12um

Ravg<5%,3-11um
Transmission over
AR Coating Range @ 0° AOI		 Tavg > 94%,3-5um or 8-12um
Diameter Tolerance +0.0/-0.1 mm
Thickness Tolerance ±0.1 mm
Parallelism 3 arc min
Surface Quality 60-40 Scratch-Dig
Surface Flatness
(Plano Side)		 λ/2 at 633nm
Surface Irregularity
(Peak to Valley)		 λ/2 at 633nm
Clear Aperture >Ø10.16 mm (Ø1/2" Lenses)
>Ø20.32 mm (Ø1" Lenses)
Design Wavelength 10.6 μm


Transmittance of Antireflection coatings:

AR And DLC Coatings Infrared Window , 25.4mm Diameter 8-12um Germanium WindowsAR And DLC Coatings Infrared Window , 25.4mm Diameter 8-12um Germanium Windows

Germanium properties:

Chemical Formula Ge
Crystal Form Poly or Single Crystal
Crystal Class Cubic
Resistivity, Ohm*cm 0.01-40
Lattice Constant, Å 5.66
Molecular Weight 72.6
Density, g/cm3 at 300 K 5.33
Dielectric Constant for 9.37 x 109 Hz at 300 K 16.6
Melting Temperature, K 1210
Thermal Conductivity, W/(m K) at 293 K 59
Thermal Expansion, 1/K at 298 K 6.1 x 10-6
Specific Heat, cal/(g K) at 273-373 K 0.074
Debye Temperature, K 370
Bandgap, eV 0.67
Solubility in water None
Knoop Hardness, kg/mm2 800
Mohs Hardness 6.3
Young's Modulus, GPa 102.66
Shear Modulus, GPa 67.04
Bulk Modulus, GPa 77.86
Poisson's Ratio 0.278

Production process

AR And DLC Coatings Infrared Window , 25.4mm Diameter 8-12um Germanium Windows

Infrared Elements Selection Guide

AR And DLC Coatings Infrared Window , 25.4mm Diameter 8-12um Germanium Windows

What's the way of shipping?
We accept DHL, Fedex, TNT, UPS, SF, EMS etc. If you have your own express account, it's great.

How to pay?

(1) T/T, PayPal, West Union,etc

(2) Bank Fee: West Union-USD30.00(≤USD3000.00),

T/T-USD20.00+, PayPal-5%. Please consult the local bank.

What's the deliver time?
For inventory: the delivery time is around 5 workdays.

Customized products: the delivery time is 10 to 30 workdays. According to the quantity and precision.

Can I customize the products based on my need?
Yes, we can customize the material, specifications and optical coating for your optical components

based on your needs. OEM is available.

Product tags

aluminum window profiles

,

aluminium window profiles

,

25mm aluminum blinds
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AR And DLC Coatings Infrared Window , 25.4mm Diameter 8-12um Germanium Windows

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Product Detail
Brand Name :
Wuhan Siwer Optics
Place of Origin :
Wuhan,China
MOQ :
1 pieces
Price :
25-100USD/piece
Payment Terms :
T/T, Western Union
Supply Ability :
3000 pieces/month
Contact Supplier
AR And DLC Coatings Infrared Window , 25.4mm Diameter 8-12um Germanium Windows

Wuhan Siwer Optics Co.,Ltd

Active Member
6 Years
hubei, wuhan
Business Type :
Manufacturer, Exporter, Seller
Main Products :
Optical Interference Filter, Bandpass Interference Filter, Long Pass Filter
Certification Level :
Active Member
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