|  Sapphire Lenses >> Sapphire Concave Lens | 
          
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            |  | Sapphire Concave  Lens | 
          
          
            |  | With one concave surface and one plane surface, Plano-Concave Lenses have negative focal lengths. | 
          
            | Sapphire concave  lenses are ideal for light projection and expanding an optical system’s focal length. | 
          
            | We have developed super polishing process which enables us to fabricate Sapphire concave Lenses with tighter manufacturing tolerances. | 
          
          
          
          
          
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                  |  |  | Specifications of Sapphire   Concave Lens |  
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                      Material: Optical grade single Sapphire crystalDiameter: >1.0mmRadius: >1.0mmDimension Tolerance: ±0.1mmThickness: >1mmThickness Tolerance: ±0.1mmSurface Quality S/D: 40/20Focal Length Tolerance: +/- 5% @ 633nmCentration: <3’Clear Aperture: >85%  |  
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              Sapphire Lenses  for medical optics, laser  optics, and imaging applications   |