- Product Details
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Quick Details
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Place of Origin:
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Zhejiang, China
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Brand Name:
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DTC
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Model Number:
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Sapphire crystal
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Application:
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OPTIS
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Product name:
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Sapphire Window
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Diameter:
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0.5-500mm
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Type:
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Optical Sapphire Windows
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Surface quality:
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60/40,80/50,40/20 etc
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Coating:
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Customer Request
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Certificate:
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ISO9001/RoHS/SGS
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Clear Aperture:
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Customer Request
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Flatness:
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Lambda/4
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Transmittance:
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85%-95%
Quick Details
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Use:
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Optical
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Structure:
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Plano-concave
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Shape:
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PLANO
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Place of Origin:
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Zhejiang, China
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Brand Name:
-
DTC
-
Model Number:
-
Sapphire crystal
-
Application:
-
OPTIS
-
Product name:
-
Sapphire Window
-
Diameter:
-
0.5-500mm
-
Type:
-
Optical Sapphire Windows
-
Surface quality:
-
60/40,80/50,40/20 etc
-
Coating:
-
Customer Request
-
Certificate:
-
ISO9001/RoHS/SGS
-
Clear Aperture:
-
Customer Request
-
Flatness:
-
Lambda/4
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Transmittance:
-
85%-95%
Customized Circular Rectangular Step Sapphire Window Uncoated and AR Coated Optical Sapphire Windows
Features
(1) Extreme Surface Hardness Chemical Resistance;
(2) Transmits Wavelengths Ranging From UV to Mid-Infrared;
(3) Thinner and Stronger than Standard Glass Windows;
Sapphire windows and square sapphire windows are manufactured regularly by us. Rectangular sapphire windows are excellent at protecting delicate optics because of their superior strength and transmission. Rectangular sapphire windows can also be used as viewports in high pressure or vacuum situations. Square sapphire pressure windows can be made much thinner than other optical glasses due to sapphire’s high modulus of rupture.
1. Physical and Optical Properties of Sapphire Windows
| Transmission Range | 0.17 to 5.5 μm |
| Refractive Index | No 1.75449; Ne 1.74663 at 1.06 μm (1) |
| Reflection Loss | 14% at 1.06 μm |
| Absorption Coefficient | 0.3 x 10 -3 cm -1 at 2.4 μm (2) |
| Reststrahlen Peak | 13.5 μm |
| dn/dT | 13.1 x 10 -6 at 0.546 μm (3) |
| dn/dμ = 0 | 1.5 μm |
| Density | 3.97 g/cc |
| Melting Point | 2040°C |
| Thermal Conductivity | 27.21 W m-1 K-1 at 300K |
| Thermal Expansion | 5.6 (para) & 5.0 (perp) x 10-6/K * |
| Hardness | Knoop 2000 with 2000g indenter |
| Specific Heat Capacity | 763 J Kg-1 K-1 at 293K (4) |
| Dielectric Constant | 11.5 (para) 9.4 (perp) at 1MHz |
| Youngs Modulus (E) | 335 GPa |
| Shear Modulus (G) | 148.1 GPa |
| Bulk Modulus (K) | 240 GPa |
| Elastic Coefficients | C11=496 C12=164 C13=115 C33=498 C44=148 |
| Apparent Elastic Limit | 300 MPa (45,000 psi) |
| Poisson Ratio | 0.25 |
| Solubility | 98 x 10 -6 g/100g water |
| Molecular Weight | 101.96 |
| Class/Structure | Trigonal (hex), R3c |
2.Specification of Sapphire Windows
| Materials | Sapphire crystals |
| Diameter Range | 1~ 250mm |
| Aperture | >90% |
| Dimension tolerance | +0.0/-0.2mm |
| Thickness tolerance | +/-0.2mm |
| Surface Quality | 60/40 S/D |
| Parallelism | 1 arc minute |
| Chamfer | 0.3-0.5mmx45degree |
| Coating | No coating or Coating as demand |
3.Application and Market of Sapphire Windows
| Applications | Markets |
| Sensor and Detector Windows |
Industrial Fire Systems, Oil and Gas,Analytical Instrumentation |
| Laser Windows | Medical Systems, Industrial, Defense |
| Viewports |
Semiconductor Equipment, Hi Temperature,Industrial and Chemicals |
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FLIR and Electro-Optics Windows |
Aerospace, Defense Aircraft and Ships,Space Systems |
| Lenses, Optics and Domes |
Medical, Defense, Electronic Devices,Aerospace Systems, R&D |
| Pressure windows |
Sea Systems, Defense, Oil and G as,Industrial Systems |
