2022 Latest Design Uv Stop Quartz Tubes - Sapphire Optical Windows – LZY

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2022 Latest Design Uv Stop Quartz Tubes - Sapphire Optical Windows – LZY Detail:

Uncoated sapphire has excellent surface hardness, and the range of transmittance extends from ultraviolet to mid-infrared wavelength region. Sapphire can only be scratched by a few substances other than it. The uncoated substrate is chemically inert and insoluble in water, common acids or alkalis at temperatures up to about 1000°C. Our sapphire window is a z-axis section, so the c-axis of the crystal is parallel to the optical axis, eliminating the birefringence effect of transmitted light.

Specification

Dimension Tolerance: 0.0/-0.1mm
Thickness Tolerance: ±0.1mm
Clear Aperture: ≥90%
Surface Quality: 40/20(Dimension≤50.8mm) 60/40(Dimension>50.8mm)
Flatness: λ/4@633nm
Parallelism: ≤1′
Chamfer: 0.2×45°

Sapphire Protective Windows

Shape Forming Method

CNC or laser

Product Characteristics

Product Characteristics

Material Properties

Sapphire is a single crystal aluminum oxide (Al2O3). It is one of the hardest materials. Sapphire has good transmission characteristics over the visible, and near IR spectrum. It exhibits high mechanical strength, chemical resistance, thermal conductivity and thermal stability. It is often used as window materials in specific field such as space technology where scratch or high temperature resistance is required.

Molecular Formula Al2O3
Density 3.95-4.1 g/cm3
Crystal Structure Hexagonal Lattice
Crystal Structure a =4.758Å , c =12.991Å
Number of molecules in unit cell 2
Mohs Hardness 9
Melting point 2050 ℃
Boiling Point 3500 ℃
Thermal Expansion 5.8×10-6 /K
Specific Heat 0.418 W.s/g/k
Thermal Conductivity 25.12 W/m/k (@ 100℃)
Refractive Index no =1.768 ne =1.760
dn/dt 13×10 -6 /K(@633nm)
Transmittance T≈80% (0.3~5μm)
Dielectric Constant 11.5(∥c), 9.3(⊥c)

Transmission Curve of Sapphire Optical Window

Transmission Curve of Sapphire Optical Window


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2022 Latest Design Uv Stop Quartz Tubes - Sapphire Optical Windows – LZY detail pictures

2022 Latest Design Uv Stop Quartz Tubes - Sapphire Optical Windows – LZY detail pictures

2022 Latest Design Uv Stop Quartz Tubes - Sapphire Optical Windows – LZY detail pictures


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  • It is a very good, very rare business partners, looking forward to the next more perfect cooperation!
    5 Stars By James Brown from Latvia - 2017.10.27 12:12
    It's really lucky to find such a professional and responsible manufacturer, the product quality is good and delivery is timely, very nice.
    5 Stars By Philipppa from belarus - 2018.12.14 15:26
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