8-14um AR Coating Infrared Optical germanium thermal Lens for FLIR camera

$10.00 - $200.00
Min. Order
5 Pieces
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Company Information

Wuhan Especial Optic Inc.

CN Manufacturer, Trading Company
Response Time
<24h
Response Rate:
92.9%
Transactions
US$ 20,000+
4 Years Paid Supplier Gold Supplier Onsite Check Trade Assurance
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Quick Details

Payment Terms: L/C,T/T
Supply Ability: 3000 Piece/Pieces per Month
Place of Origin: Hubei China
Brand Name: Wuhan Especial Optic
Model Number: Customization
Usage: Optical
Structure: Plano
Shape: Spherical
Product name: optical lens
Application: thermal imaging
Material: Germanium
Diameter: 5-300mm
Thickness: as request
Tolerance: &plusmn;0.1mm
Surface quality: 60-40 40-20 20-10
Surface Figure: L/2 L/4
Coating: AR and DLC coating
Focal length: as request
Packaging Detail: 1. Protective film 2. Pearl cotton 3. Cardboard box
Product Description

Ge Lens

In the range of 2-12 μm, germanium is the most commonly used material for the production of spherical lenses and windows for high efficiency infrared in the imaging system. Germanium has a high refractive index (about 4.0 through 2-14μm band), usually do not need to be modified due to its low chromatic aberration in low power imaging systems.

Germanium optical performance is severely affected by temperature; the transmission rate decreases with the increase of temperature, most applications with Germanium elements involved can only be applied below 100 degrees Celsius. Designers also need to pay attention for certain weight constraints in system design with a density of germanium (5.33 g/cm3). Germanium is mainly used in the thermal imaging system and infrared (FLIR) field.

It is critical that the surface of the material has a promising finish and good transmittance. Hyperion Optics provides 40-20 surface quality Ge lenses as factory standard products, with up to 1/4 lambda in surface accuracy. Our outstanding CNC lathe capability has leveraged our machining efficiency to meet rapid delivery. Ge aspheric lenses stand up well to harsh environments and we offer the most popular sizes with Anti-Reflection Coatings. are also available for your application; please refer us Aspheric Lenses for more information.

* High resistivity hemispherical lens available
* Available with AR or DLC coating
* Available in a wide variety of diameters and focal lengths

Our germanium optics are all tested with our Zygo interferometer and spectrophotometer as standard testing items to ensure superior quality. Refer to our typical manufacturing specs for your information below.You can also contact us for manufacturing limit or custom specifications.

Chemical Formula
Ge
Crystal Form
Monocrystal, orientation <111>, N-type
Crystal Class
Cubic
Resistivity, Ohm*cm
5-40
Lattice Constant, Å
5.66
Molecular Weight
72.60
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 K-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
General Parameters
Standard
High Pricision
Material
Germanium
Size
5mm-300mm
5mm-300mm
Size Tolerance
±0.1mm
±0.02mm
Clear Aperture
≥90%
95%
Surface Quality
60/40
20/10
Centration
3'
1'
Focal Length Tolerance
±2%
±0.5%
Coating
Uncoated, AR, BBAR, Reflective
Our Company
Packing & Delivery
FAQ

Q: What's the way of shipping?
A:  We accept DHL, Fedex, TNT, UPS, SF and etc.

Q: How to pay?
A:  (1) T/T, and Credit Card.
      (2) Bank Fee: T/T-USD20.00+, Please consult the local bank.

Q: What's the deliver time?
A:  (1) For inventory: the delivery time is 5 workdays.
      (2) For customized products: the delivery time is 10 to 30 workdays. According to the quantity and precision.

Q: How to ensure the safety of payment?
A:  Wuhan Especial Optic.,INC is the gold supplier and supports Alibaba Trade Assurance. Payment<=500USD, 100% in advance. Payment>500USD, 30% T/T in advance ,balance before shippment.

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

Contact us


            

     Wuhan Especial Optic.,INC


                Contacts:    David   Liu

                             T:     86-027-87504830 

                             P:    +86 18622556450

                     Skype:    +86 18622556450  

                      Email:    David(at)wheo.cn

                  Website:    www.wheo.cn