VY Optics Photoelectric Technology Co., Ltd.

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    Double concave spherical lens

    Double-Concave Spherical Lens, also named Bi-Concave Lens, is used to divergent light. The Bi-Concave is best used when the input beam is converging. It is used in beam expanders,. Projection optics systems, optical viewers and optical charater readers etc;

    We supply optical spherical lenses,include plano-convex spherical lens,plano-concave spherical lens,bi-convex spherical lens,bi-concave spherical lens,meniscus spherical lens,special spherical lens etc..
    Specification of our plano-convex spherical lenses as follow:
    *Material:BK7 or other materials
    *Focal length:+/-1%
    *Center thickness tolerance:+/-0.01mm
    *Centration:1 arc minutes
    *Surface Figure:lambda/2 at 633nm on plano side
    *Surface quality:40/20 stratch/dig
    *Clear Apenture>90%
    *Chamfer Protective:0.25mm at 45 degree typical