China Factory for Quartz Spiral Helical Tubes - Sapphire Optical Windows – LZY

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We always stick to the principle "Quality First, Prestige Supreme". We are fully committed to providing our clients with competitively priced quality products, prompt delivery and professional service for Sio2 Sputter Target, Laser Cavity Reflector, Quartz Glass Sheets, "Making the Products of Large Quality" is definitely the everlasting purpose of our enterprise. We make unremitting endeavours to know the target of "We Will Always Hold in Pace along with the Time".

China Factory for Quartz Spiral Helical 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

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

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To fulfill the customers' over-expected fulfillment , we have now our solid staff to deliver our greatest general assistance which includes internet marketing, product sales, creating, manufacturing, excellent controlling, packing, warehousing and logistics for China Factory for Quartz Spiral Helical Tubes - Sapphire Optical Windows – LZY , The product will supply to all over the world, such as: Zambia, Greenland, Ghana, The president and all the company members would like to provide professional products and services for customers and sincerely welcome and cooperate with all native and foreign customers for a bright future.

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A good manufacturers, we have cooperated twice, good quality and good service attitude.

By Barbara from Colombia - 2018.09.23 18:44

The customer service staff is very patient and has a positive and progressive attitude to our interest, so that we can have a comprehensive understanding of the product and finally we reached an agreement, thanks!

By Emma from Johor - 2018.06.05 13:10

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