MachineU > China Products > Minerals & Metallurgy > Stainless Steel > Stainless Steel Angles
Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings
Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings
Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings
Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings
Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings
Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings
Specifications
Brand Name :
Wuhan Siwer Optics
Place of Origin :
Wuhan,China
MOQ :
4 pieces
Price :
800USD/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
Parallelism :
0.01mm
Standard coating :
AR/AR@8-14um
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.

The surface reflectivity of germanium prism is about 36%, so we need to make antireflection coatings on the prism surfaces

Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings

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.

Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings

Production Line

Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings

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:

Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatingsCustomized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings

Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatingsCustomized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings

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

Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings

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

tungsten carbide drawplates

,

tungsten carbide drawplates usage

,

tungsten drawplate
Send your message to this supplier
Send Now

Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings

Ask Latest Price
Product Detail
Brand Name :
Wuhan Siwer Optics
Place of Origin :
Wuhan,China
MOQ :
4 pieces
Price :
800USD/piece
Payment Terms :
T/T, Western Union
Supply Ability :
500 pieces/month
Contact Supplier
Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings
Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR coatings
Customized Germanium Prism 12 Degree apex angle with 2 Surfaces 8-14um AR 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
Watch related videos

Find Similar Products By Category:

Supplier Homepage Products Infrared Prism
MachineU China Products Minerals & Metallurgy Stainless Steel Stainless Steel Angles
Contact Supplier
Submit Requirement