sapphire optics
Uncoated sapphire ball lens 3.5mm Diameter



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Sapphire Products >> Stock Items >> Uncoated Sapphire Ball Lens 3.5mm Diameter
Sapphire Ball Lens 3.5mm Diameter
    Specifications of Sapphire Ball Lens SBL35U
  • Code: SBL35U
  • Material: Optical grade single Sapphire crystal
  • Diameter: 3.5mm
  • Tolerance: ±0.005mm
  • Surface Quality S/D: 60/40
  • Clear Aperture: >90%
  • Sphericity: 2um
  • Coating: Uncoated


Sapphire Balls Features and Applications:
1. High transparent to wavelengths of light between 0.3 μm (UV) and 5 μm (IR),
2. Extremely hard and resistant to attack by srong acid.
3. Highly resistant to scratching and abrasion (9 on the Mohs scale of mineral hardness scale).
4. Extremely high melting temperature (2030°C).
5. Suitable for the application of fiber communication, endoscopy, microscopy, and laser measurement systems.
Custom Specifications of Sapphire Ball Lens:
Diameters: 1 mm to 150mm
Diameters tolerance: +/- 0.001mm
Roundness: < 0.003 
Surface quality: Up to 20/10
Surfaces accuracy: < 2λ
Clear aperture: > 90%
Sphericity: Up to 0.6μm
Coating: AR coating
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