MachineU > China Products > Consumer Electronic
High Precision Single Crystal Germanium Windows With AR And DLC Coatings
High Precision Single Crystal Germanium Windows With AR And DLC Coatings
High Precision Single Crystal Germanium Windows With AR And DLC Coatings
High Precision Single Crystal Germanium Windows With AR And DLC Coatings
High Precision Single Crystal Germanium Windows With AR And DLC Coatings
High Precision Single Crystal Germanium Windows With AR And DLC Coatings
High Precision Single Crystal Germanium Windows With AR And DLC Coatings
High Precision Single Crystal Germanium Windows With AR And DLC Coatings
High Precision Single Crystal Germanium Windows With AR And DLC Coatings
High Precision Single Crystal Germanium Windows With AR And DLC Coatings
Specifications
Place of Origin :
Wuhan,China
MOQ :
5 pieces
Price :
25-98USD/piece
Payment Terms :
T/T, Western Union
Supply Ability :
3000 pieces/month
Delivery Time :
3-4 weeks
Packaging Details :
1.Tissue paper. 2.Plastic foam packaging film. 3.Hard carton box with quakeproof filler
Brand Name :
Wuhan Siwer Optics
Material :
Single Crystal Germanium
Size tolerance :
+/-0.1mm
Chamfer :
0.2-0.5mm
Surface quality :
40/20
Surface flatness :
Lambda/4 in 25.4mm
Parallelism :
0.01mm
Standard coating :
AR/AR@8-14um
Size range :
5-300mm
Usage :
Infared system
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.

Optical Properties of Germanium Window

MaterialSingle Crystal Germanium
AR Coating Range3-5um,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
Parallelism3 arc min
Surface Quality60-40 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 Wavelength10.6 μm


Transmittance of Antireflection coatings:

High Precision Single Crystal Germanium Windows With AR And DLC CoatingsHigh Precision Single Crystal Germanium Windows With AR And DLC Coatings

High Precision Single Crystal Germanium Windows With AR And DLC CoatingsHigh Precision Single Crystal Germanium Windows With AR And DLC Coatings

Germanium properties:

Chemical FormulaGe
Crystal FormPoly or Single Crystal
Crystal ClassCubic
Resistivity, Ohm*cm0.01-40
Lattice Constant, Å5.66
Molecular Weight72.6
Density, g/cm3 at 300 K5.33
Dielectric Constant for 9.37 x 109 Hz at 300 K16.6
Melting Temperature, K1210
Thermal Conductivity, W/(m K) at 293 K59
Thermal Expansion, 1/K at 298 K6.1 x 10-6
Specific Heat, cal/(g K) at 273-373 K0.074
Debye Temperature, K370
Bandgap, eV0.67
Solubility in waterNone
Knoop Hardness, kg/mm2800
Mohs Hardness6.3
Young's Modulus, GPa102.66
Shear Modulus, GPa67.04
Bulk Modulus, GPa77.86
Poisson's Ratio0.278

Infrared Elements Selection Guide

High Precision Single Crystal Germanium Windows With AR And DLC Coatings

Production process

High Precision Single Crystal Germanium Windows With AR And DLC Coatings













Send your message to this supplier
Send Now

High Precision Single Crystal Germanium Windows With AR And DLC Coatings

Ask Latest Price
Watch Video
Product Detail
Place of Origin :
Wuhan,China
MOQ :
5 pieces
Price :
25-98USD/piece
Payment Terms :
T/T, Western Union
Supply Ability :
3000 pieces/month
Delivery Time :
3-4 weeks
Contact Supplier
video
High Precision Single Crystal Germanium Windows With AR And DLC Coatings
High Precision Single Crystal Germanium Windows With AR And DLC Coatings
High Precision Single Crystal Germanium Windows With AR And DLC Coatings
High Precision Single Crystal Germanium Windows With AR And DLC Coatings
High Precision Single Crystal Germanium Windows With AR And DLC Coatings

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
Discover similar products
View More

Find Similar Products By Category:

Supplier Homepage Products Infrared Window
MachineU China Products Consumer Electronic
Contact Supplier
Submit Requirement