Sapphire Optical Lens – High Hardness, Multi-Size Customization

Sapphire optical lenses represent the gold standard in high-performance optics, combining unmatched durability with exceptional optical clarity. Engineered from 99.999% pure single-crystal aluminum oxide (Al₂O₃), these lenses offer Mohs 9 hardness (second only to diamond) while maintaining >85% light transmission from UV to mid-IR wavelengths (250-5000nm). Unlike conventional glass or fused silica optics, sapphire lenses are virtually scratch-proof, chemically inert, and capable of withstanding extreme temperatures (-200°C to +1900°C) – making them indispensable for aerospace, defense, industrial laser, and scientific instrumentation applications.
Our precision manufacturing process combines diamond-tool CNC machining with sub-nanometer polishing to produce lenses with:

• Surface roughness <5Å RMS (near-atomic smoothness)
• Wavefront distortion <λ/10 @ 632.8nm
• Centration accuracy <1 arc minute

Available in diameters from 1mm to 300mm with customizable curvatures (plano, spherical, aspheric), these lenses push the boundaries of what's possible in harsh-environment optical systems.

Key Features of Sapphire Lens

1. Sapphire Lens provide Extreme Environmental Resistance

• Thermal shock stability (ΔT >1000°C)
• Radiation hard (withstands >10⁶ Gy gamma)
• Impervious to acids/alkalis (except HF)

2. Sapphire Lens provide Optical Performance

• Broadband AR coating options (Ravg <0.2% per surface)
• Low birefringence (<5 nm/cm)
• Homogeneity Δn <5×10⁻⁶

3. Sapphire Lens provide Mechanical Superiority

• Knoop hardness 2000 kg/mm²
• Compressive strength 2.1 GPa
• Density 3.98 g/cm³

4. Sapphire Lens provide Precision Manufacturing

• Diameter tolerance ±0.005mm
• Center thickness ±0.01mm
• Surface irregularity <0.1μm

Applications of Sapphire Lens

1. Sapphire Lens in Defense & Aerospace

• Laser weapon system optics
• Missile seeker domes
• Spacecraft star trackers

2. Sapphire Lens in Industrial Lasers

• High-power CO₂ laser focusing lenses
• Fiber laser collimators
• Laser cutting beam delivery

3. Sapphire Lens in Scientific Instruments

• Raman spectroscopy objectives
• Synchrotron beamline optics
• Cryogenic microscope lenses

4. Sapphire Lens in Medical Technology

• Laser surgery handpieces
• Endoscope imaging optics
• Ophthalmic diagnostic devices

Specifications

Standard Sizes:

• Diameter: 3mm, 5mm, 10mm, 25mm, 50mm, 100mm
• Radius Options: Plano, R5mm to R5000mm
• Thickness: 0.5mm to 50mm

Coating Options:

• UV-AR: 250-400nm (R<0.5%)
• VIS-AR: 400-700nm (R<0.2%)
• NIR-AR: 700-1100nm (R<0.3%)
• MWIR-AR: 3-5μm (R<1.0%)

Factory Equipments

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