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28 Deg Apex Angle Isosceles Germanium Ge Prisms , Germanium Wedge Prism
28 Deg Apex Angle Isosceles Germanium Ge Prisms , Germanium Wedge Prism
28 Deg Apex Angle Isosceles Germanium Ge Prisms , Germanium Wedge Prism
28 Deg Apex Angle Isosceles Germanium Ge Prisms , Germanium Wedge Prism
28 Deg Apex Angle Isosceles Germanium Ge Prisms , Germanium Wedge Prism
28 Deg Apex Angle Isosceles Germanium Ge Prisms , Germanium Wedge Prism
28 Deg Apex Angle Isosceles Germanium Ge Prisms , Germanium Wedge Prism
28 Deg Apex Angle Isosceles Germanium Ge Prisms , Germanium Wedge Prism
Specifications
Brand Name :
Wuhan Siwer Optics
Place of Origin :
Wuhan,China
MOQ :
4 pieces
Price :
700USD/piece
Payment Terms :
T/T, Western Union
Supply Ability :
500 pieces/month
Delivery Time :
5-7weeks
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 in 25.4mm
Angle tolerance :
3 arc min
Standard coating :
Customized
Size range :
5-200mm
Usage :
Infared system
Description

Germanium (Ge) wedge prisms

The refractive index of single crystal germanium material is higher than 4.0, and the wedge prism made of single crystal germanium has strong deflection ability to infrared light.

Such as a 2-degree germanium wedge prism can deflect infrared light by 6 degrees.

28 Deg Apex Angle Isosceles Germanium Ge Prisms , Germanium Wedge Prism

Germanium material is softer than other optical materials, and there are many surfaces should be polished,so the surface quality of germanium prism is easier to be destroyed in the processing.
Because germanium material does not penetrate the visible light, it can not use the self-collimation method to measure the angular accuracy as other materials'prisms.
These factors lead to high production cost of germanium prism.

In infrared system, it is sometimes necessary to deflect the infrared light (especially the light with 8-14um wavelength) at a certain angle, and germanium prism is very suitable for it.

Since the Refractive index of single crystal germanium is 4.0, its critical angle is only 14.5 degrees, it is very conducive to the propagation of light beam in the prism.

We have customized various germanium prisms for many university laboratories and other similar research departments. We have many years of experience in this field.

We can customize germanium prisms for you.Or you just need to tell us what you need to achieve,Our engineers can recommend or design suitable prisms for you.
More details please contact us.

28 Deg Apex Angle Isosceles Germanium Ge Prisms , Germanium Wedge Prism 28 Deg Apex Angle Isosceles Germanium Ge Prisms , Germanium Wedge Prism 28 Deg Apex Angle Isosceles Germanium Ge Prisms , Germanium Wedge Prism

Production Line

28 Deg Apex Angle Isosceles Germanium Ge Prisms , Germanium Wedge Prism

Optical Properties of Germanium Prism

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
Focal Length Tolerance ±2%
Surface Quality 60-40 Scratch-Dig
Surface Flatness
(Plano Side)		 λ/2 at 633nm
Spherical Surface Powerc
(Convex Side)		 1.5λ at 633nm
Surface Irregularity
(Peak to Valley)		 λ/2 at 633nm
Centration <3 arcmin
Clear Aperture >Ø10.16 mm (Ø1/2" Lenses)
>Ø20.32 mm (Ø1" Lenses)
Design Wavelength 10.6 μm


Transmittance of Antireflection coatings:

28 Deg Apex Angle Isosceles Germanium Ge Prisms , Germanium Wedge Prism28 Deg Apex Angle Isosceles Germanium Ge Prisms , Germanium Wedge Prism

28 Deg Apex Angle Isosceles Germanium Ge Prisms , Germanium Wedge Prism28 Deg Apex Angle Isosceles Germanium Ge Prisms , Germanium Wedge Prism

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

Infrared Elements Selection Guide

28 Deg Apex Angle Isosceles Germanium Ge Prisms , Germanium Wedge Prism

Product tags

6061 aluminum angle

,

6063 aluminum angle

,

prism correction
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28 Deg Apex Angle Isosceles Germanium Ge Prisms , Germanium Wedge Prism

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Product Detail
Brand Name :
Wuhan Siwer Optics
Place of Origin :
Wuhan,China
MOQ :
4 pieces
Price :
700USD/piece
Payment Terms :
T/T, Western Union
Supply Ability :
500 pieces/month
Contact Supplier
28 Deg Apex Angle Isosceles Germanium Ge Prisms , Germanium Wedge Prism
28 Deg Apex Angle Isosceles Germanium Ge Prisms , Germanium Wedge Prism
28 Deg Apex Angle Isosceles Germanium Ge Prisms , Germanium Wedge Prism
28 Deg Apex Angle Isosceles Germanium Ge Prisms , Germanium Wedge Prism

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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