| Place of Origin: | Wuhan,China |
|---|---|
| Brand Name: | Wuhan Siwer Optics |
| Minimum Order Quantity: | 100 pieces |
| Price: | 6-15USD/piece |
| Packaging Details: | 1.Tissue paper. 2.Plastic foam packaging film. 3.Hard carton box with quakeproof filler |
| Delivery Time: | 3-5 weeks |
| Payment Terms: | T/T, Western Union |
| Supply Ability: | 3000 pieces/month |
| Material: | Single Crystal Silicon | Diameter: | 19+0/-0.1mm |
|---|---|---|---|
| Thickness: | 1.5+/-0.1mm | Surface Quality: | 60/40 |
| Surface Flatness: | Lambda/4 In 25.4mm | Parallelism: | 0.01mm |
| Standard Coating: | AR/AR@4-4.5um,Tavg>96% | Usage: | Flame Detector |
| Chamfer: | 0.2mm | ||
| Highlight: | ir window,optical window |
||
A flame detector usually needs to detect 4.4um infrared light. Our silicon protection window can not only cut off the interference light of visible light and near-infrared light, but also has a very competitive price.
| Material | Single Crystal Germanium |
| AR Coating Range | 3-5um |
| Reflectance over AR Coating Range @ 0° AOI |
Ravg < 1.5%,3-5um |
| Transmission over AR Coating Range @ 0° AOI |
Tavg > 97%,3-5um |
| 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 |
|
Chemical Formula
|
Si
|
|
Molecular Weight
|
28.09
|
|
Crystal Class
|
Cubic
|
|
Lattice Constant, Å
|
5.43
|
|
Density, g/cm3 at 293 K
|
2.329
|
|
Dielectric Constant for 9.37 x 109 Hz
|
13
|
|
Melting Point, K
|
1690
|
|
Thermal Conductivity, W/(m K)
at 125K at 313K at 400K |
598.6 163 105.1 |
|
Thermal Expansion, 1/K
at 75K at 293K at 1400K |
-0.5 x 10-6 2.6 x 10-6 4.6 x 10-6 |
|
Specific Heat, cal/(g K)
at 298K at 1800K |
0.18 0.253 |
|
Debye Temperature, K
|
640
|
|
Bandgap, eV
|
1.1
|
|
Solubility in water
|
None
|
|
Knoop Hardness, kg/mm2
|
1100
|
|
Mohs Hardness
|
7
|
|
Young's Modulus, GPa
|
130.91
|
|
Shear Modulus, GPa
|
79.92
|
|
Bulk Modulus, GPa
|
101.97
|
|
Poisson's Ratio
|
0.28
|
Procedure
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.