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PRODUCTS » Lens » BiConcave Lens

BiConcave lenses have a negative focal length and are commonly used to increase the divergence of converging light. With two concave surfaces, a BiConcave lens is more divergent than a plano concave lens if the radius of curvature for all the curved surfaces on both lenses is the same.

This is the general standards we offer our customers, UNION OPTICS can supply other lenses meet your requirements, for detail information, please contact us.
  BiConcave Lens
    BiConcave Lens
Material:  BK7, Fused Silica
Dimension Tolerance:  +0/-0.1mm
Thickness Tolerance:  ±0.1mm
Surface Quality:  40/20 scratch and dig
Flatness:  λ/4@632.8nm
Centration:  <3 arc min
Focal Length Tolerance:  ±1%
Clear Aperture:  >90%
Bevel:  0.2mmX45deg
Coating:  As requested
BiConvex lens  Achromatic lens    
     
Note: Usually, the material we used is Chinese material unless assigned. If you can not confirm which material is the right one, please contact us.
 

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