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  • Meniscus Lenses

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    Optical Lenses
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    • Specifications
    • Manufacturing Capabilities

    Meniscus lenses have two curved surfaces which are referred to as convex-concave lenses. Radius of curvature of both surface can be chosen independently from each other. Meniscus lenses find application in optical systems, where aberrations need to be minimized, for instance in multi lens focusing objective, where it helps to minimize focal spot of the beam. The lenses is applied in collimators. Another advantage is that meniscus design allows to make longer focal length lenses than the ones available in Plano-convex design. Please contact us to define your requirements, we will give the prototype and OEM.

     

     

    Standard Specifications

    Materials: BK7, UVFS, FS, CaF2, BaF2, ZnSe, Ge, Si, Sapphire (Other glass and crystal types available upon request)
    Surface Figure: Both Surfaces
    λ/10 at 633 nm
    λ/4 at 633 nm
    λ/4 at 633 nm
    Surface Quality: Both Surfaces
    10-5
    20-10
    40-20
    20-10
    Diameter Tolerance: + 0.00, – 0.02mm
    Thickness Tolerance: ± 0.05mm
    Radius Tolerance: ± 0.5%
    Centration Error: < 3 arc minutes
    Bevels: 0.010 – 0.03mm at 45º
    Clear Aperture: Central 90% of diameter

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    Sherlan Optics
    Tel: 86-431-89235797
    Mobile:86-18946645479
    Add: Boxue Road, Changchun, China
    Web:www.sherlan.com