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    透鏡

    透鏡

    透鏡

     1、BK7 Negative Meniscus Lenses

     
    Material: BK7 glass
    Paraxial Focal Length: ±2%
    Design Index: 1.5183±0.0005@546.1nm
    Centration: 3 arc minutes
    Diameter tolerance: +0.0,-0.15mm
    Clear Aperture Diameter: 80%
    Surface Quality: 60-40 scratch and dig
    Surface Figure: λ/4@632.8nm
     
     

    2、BK7 Meniscus Lenses

    Material: BK7 glass
    Paraxial Focal Length: ±2%
    Design Index: 1.5183±0.0005@546.1nm
    Centration: 3 arc minutes
    Diameter tolerance: +0.0,-0.15mm
    Clear Aperture Diameter: 80%
    Surface Quality: 60-40 scratch and dig
    Surface Figure: λ/4@632.8nm
     
     

    3、Double-Concave Glass Lenses

    Material: BK7  glass,UV grade fused silica
    Paraxial Focal Length: ±1%(FL<1m), ±2%(FL>1m)
    Centration: 3 arc minutes
    Diameter tolerance: +0.0,-0.15mm
    Clear Aperture Diameter: 80%
    Center Thickness: ±0.2 mm
    Surface Quality: 60-40 scratch and dig
    Bevel: 0.25mmx45°
     
     

    4、Double-Convex Glass Lenses

     
    Material: BK7 glass,UV grade fused silica.
    Paraxial Focal Length: ±1%(FL<1m), ± 2%(FL>1m)
    Centration: 3 arc minutes
    Diameter tolerance: +0.0,-0.15mm
    Clear Aperture Diameter: 80%
    Center Thickness: ±0.2 mm
    Surface Quality: 60-40 scratch and dig
    Bevel: 0.25mmx45°
     
     

    5、Plano-Convex Lenses

     
    Material: BK7  glass, UV grade fused  silica, CaF2.
    Paraxial Focal Length: ±0.1% (FL<1m), ± 2%(FL>1m)
    Centration: 3 arc minutes
    Diameter tolerance: +0.0,-0.15mm
    Clear Aperture Diameter: 80%
    Center Thickness: ±0.2 mm
    Surface Quality: 60-40 scratch and dig
    Bevel: 0.25mmx45°
     

    6、Plano-Concave Lenses

    Material:BK7  glass, UV grade fused  silica, CaF2.
    Paraxial Focal Length: ±1%(FL<1m), ± 2%(FL>1m)
    Centration: 3 arc minutes
    Diameter tolerance: +0.0,-0.15mm
    Clear Aperture Diameter: 80%
    Center Thickness: ±0.2 mm
    Surface Quality: 60-40 scratch and dig
    Bevel: 0.25mmx45°
     

    7、Plano-concave Cylindrical Lenses

     Material: BK7  glass, UV grade fused  silica
    Paraxial Focal Length: ±2%
    Centration: 3 arc minutes
    Diameter tolerance: +0.0,-0.2mm
    Clear Aperture Diameter: 80%
    Surface Quality: 60-40 scratch and dig
    Bevel: 0.25mmx45°
     

    8、Plano-convex Cylindrical Lenses

    Material: BK7  glass, UV grade fused  silica
    Paraxial Focal Length: ±2%
    Centration: 3 arc minutes
    Diameter tolerance: +0.0,-0.2mm
    Clear Aperture Diameter: 80%
    Surface Quality: 60-40 scratch and dig
    Bevel: 0.25mmx45°
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