Factory Direct Supply Sapphire Lens Supplier

Short Description:

Material: Sapphire
Specification: Standard or customization
Packing: Paper box
Usage: Optical


Product Detail

Product Tags

Because sapphire glass has the full spectrum transmission ability from ultraviolet to infrared, the lens products made of sapphire can not only have a longer service life, but also adapt to various spectra, so as to reduce the use of optical glass and reduce the volume of instrument.

Typical Applications

Optical surfaces
Imaging optics
Corrosion-resistant surface
Focusing optics

Technical Index

Diameter: Ф1.5mm-Ф60mm
Diameter Tolerance: 0.005-0.10mm
Thickness: 1.00-30.0
Thickness Tolerance: 0.01-0.10
SR (mm): According to user’s requirement
Transmittance Under 632.8nm Wavelength >85%
Center Deviation: <3’
Facial Contour: λ/2
Surface Quality: S/D 40/20
Surface Roughness: 0.5-1.5nm

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 13x10 -6 /K(@633nm)
Transmittance T≈80% (0.35μm)
Dielectric Constant 11.5(∥c), 9.3(⊥c)

Transmission Curve of Sapphire Optical Window

Transmission Curve of Sapphire Optical Window

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