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  • >Calcium Fluoride Biconvex Lens

    • Calcium Fluoride Biconvex Lens

    Calcium fluoride biconvex lenses have a wide transmittance spectral range (180nm-8.0 μ m), high damage threshold, low fluorescence, and high uniformity. The physical properties are relatively soft and the surface is prone to scratches. It is used for laser collimation and is used as a substrate for various optical components. UM OPTICS provides a diameter of 2-300mm and a thickness of 0.12-60mm (with an accuracy of 20-10,1)/ 10L@633nm ）Calcium fluoride biconvex lens can be coated with MgF2, UV-AR, UV-VIS, VIS-EXT, VIS-NIR, NIR I, NIR II, Telecom NIR, SWIR, SWIR, YAG-BBAR and other film systems.

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    Technical Parameter

    Material Data

    Transmittance

    Application Field

    Related Products
      Dia(mm) Focal Length(mm) Center Thickness(mm) Edge Thickness(mm) Design Wavelength(μm) Radius of Curvature(mm) Surface Quality Compare
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    76.2 25.4 12.7
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    F500 F250 F200 F100 F75 F50 F25.4 F76.2 F50.8 F40 F20 F15
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    6.7 10.4 12.34 2.9 3.9 4.5 5.9 11 2.2 2.5 3.2 5.6
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    3 2 1.5
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    5 0.588
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    398.1 197.7 157.76 173.1 86.2 64.4 42.5 20.2 60.53 40.09 34.2 16.6 12.1
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    60-40 40-20
    		 
    More+ Less 76.2 F500 6.7 3 5 398.1 60-40

    Φ76.2mm，F500，Calcium Fluoride Biconvex Lenses

    Number：PCa05H003

    Dia(mm)：76.2 Focal Length(mm)：F500 Center Thickness(mm)：6.7 Edge Thickness(mm)：3 Design Wavelength(μm)：5 Radius of Curvature(mm)：398.1 Surface Quality：60-40 Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Calcium Fluoride（CaF2） Power@632.8nm：/ Irregularity@632.8nm：λ PV@632.8nm：/ Centering：<3′ Clear Aperture：>90% Coating：Uncoated REACH：Compliant ROHS：Compliant
    More+ Less 76.2 F250 10.4 3 5 197.7 60-40

    Φ76.2mm，F250，Calcium Fluoride Biconvex Lenses

    Number：PCa05H002

    Dia(mm)：76.2 Focal Length(mm)：F250 Center Thickness(mm)：10.4 Edge Thickness(mm)：3 Design Wavelength(μm)：5 Radius of Curvature(mm)：197.7 Surface Quality：60-40 Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Calcium Fluoride（CaF2） Power@632.8nm：/ Irregularity@632.8nm：λ PV@632.8nm：/ Centering：<3′ Clear Aperture：>90% Coating：Uncoated REACH：Compliant ROHS：Compliant
    More+ Less 76.2 F200 12.34 3 5 157.76 60-40

    Φ76.2mm，F200，Calcium Fluoride Biconvex Lenses

    Number：PCa05H001

    Dia(mm)：76.2 Focal Length(mm)：F200 Center Thickness(mm)：12.34 Edge Thickness(mm)：3 Design Wavelength(μm)：5 Radius of Curvature(mm)：157.76 Surface Quality：60-40 Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Calcium Fluoride（CaF2） Power@632.8nm：/ Irregularity@632.8nm：λ PV@632.8nm：/ Centering：<3′ Clear Aperture：>90% Coating：Uncoated REACH：Compliant ROHS：Compliant
    More+ Less 25.4 F200 2.9 2 0.588 173.1 40-20

    Φ25.4mm，F200，Calcium Fluoride Biconvex Lenses

    Number：PCa05E009

    Dia(mm)：25.4 Focal Length(mm)：F200 Center Thickness(mm)：2.9 Edge Thickness(mm)：2 Design Wavelength(μm)：0.588 Radius of Curvature(mm)：173.1 Surface Quality：40-20 Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Calcium Fluoride（CaF2） Power@632.8nm：3/2λ Irregularity@632.8nm：/ PV@632.8nm：λ/4 Centering：<3′ Clear Aperture：>90% Coating：Uncoated REACH：Compliant ROHS：Compliant
    More+ Less 25.4 F100 3.9 2 0.588 86.2 40-20

    Φ25.4mm，F100，Calcium Fluoride Biconvex Lenses

    Number：PCa05E008

    Dia(mm)：25.4 Focal Length(mm)：F100 Center Thickness(mm)：3.9 Edge Thickness(mm)：2 Design Wavelength(μm)：0.588 Radius of Curvature(mm)：86.2 Surface Quality：40-20 Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Calcium Fluoride（CaF2） Power@632.8nm：3/2λ Irregularity@632.8nm：/ PV@632.8nm：λ/4 Centering：<3′ Clear Aperture：>90% Coating：Uncoated REACH：Compliant ROHS：Compliant
    More+ Less 25.4 F75 4.5 2 0.588 64.4 40-20

    Φ25.4mm，F75，Calcium Fluoride Biconvex Lenses

    Number：PCa05E007

    Dia(mm)：25.4 Focal Length(mm)：F75 Center Thickness(mm)：4.5 Edge Thickness(mm)：2 Design Wavelength(μm)：0.588 Radius of Curvature(mm)：64.4 Surface Quality：40-20 Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Calcium Fluoride（CaF2） Power@632.8nm：3/2λ Irregularity@632.8nm：/ PV@632.8nm：λ/4 Centering：<3′ Clear Aperture：>90% Coating：Uncoated REACH：Compliant ROHS：Compliant
    More+ Less 25.4 F50 5.9 2 0.588 42.5 40-20

    Φ25.4mm，F50，Calcium Fluoride Biconvex Lenses

    Number：PCa05E006

    Dia(mm)：25.4 Focal Length(mm)：F50 Center Thickness(mm)：5.9 Edge Thickness(mm)：2 Design Wavelength(μm)：0.588 Radius of Curvature(mm)：42.5 Surface Quality：40-20 Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Calcium Fluoride（CaF2） Power@632.8nm：3/2λ Irregularity@632.8nm：/ PV@632.8nm：λ/4 Centering：<3′ Clear Aperture：>90% Coating：Uncoated REACH：Compliant ROHS：Compliant
    More+ Less 25.4 F25.4 11 2 0.588 20.2 40-20

    Φ25.4mm，F25.4，Calcium Fluoride Biconvex Lenses

    Number：PCa05E005

    Dia(mm)：25.4 Focal Length(mm)：F25.4 Center Thickness(mm)：11 Edge Thickness(mm)：2 Design Wavelength(μm)：0.588 Radius of Curvature(mm)：20.2 Surface Quality：40-20 Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Calcium Fluoride（CaF2） Power@632.8nm：3/2λ Irregularity@632.8nm：/ PV@632.8nm：λ/4 Centering：<3′ Clear Aperture：>90% Coating：Uncoated REACH：Compliant ROHS：Compliant
    More+ Less 12.7 F76.2 2.2 1.5 5 60.53 60-40

    Φ12.7mm，F76.2，Calcium Fluoride Biconvex Lenses

    Number：PCa05C010

    Dia(mm)：12.7 Focal Length(mm)：F76.2 Center Thickness(mm)：2.2 Edge Thickness(mm)：1.5 Design Wavelength(μm)：5 Radius of Curvature(mm)：60.53 Surface Quality：60-40 Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Calcium Fluoride（CaF2） Power@632.8nm：3/2λ Irregularity@632.8nm：/ PV@632.8nm：λ/4 Centering：<3′ Clear Aperture：>90% Coating：Uncoated REACH：Compliant ROHS：Compliant
    More+ Less 12.7 F50.8 2.5 1.5 5 40.09 60-40

    Φ12.7mm，F50.8，Calcium Fluoride Biconvex Lenses

    Number：PCa05C009

    Dia(mm)：12.7 Focal Length(mm)：F50.8 Center Thickness(mm)：2.5 Edge Thickness(mm)：1.5 Design Wavelength(μm)：5 Radius of Curvature(mm)：40.09 Surface Quality：60-40 Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Substrate Material：Calcium Fluoride（CaF2） Power@632.8nm：3/2λ Irregularity@632.8nm：/ PV@632.8nm：λ/4 Centering：<3′ Clear Aperture：>90% Coating：Uncoated REACH：Compliant ROHS：Compliant
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    Material Data
    Optical Properties
    Transmission Range0.13-10μm
    Transmittance>94%@193nm-7.87μm
    Refractive Index

    1.4288@2.5μm

    1.39908@5μm

    Reflection Loss5.4%@5μm(both surfaces)
    Absorption Coefficienet7.8×10-4@2.7μm
    StructureCubic Crystal System
    Cleavage Planes<111>
    Physical Properties
    Density [g/cm3]3.18
    Melting Point [℃]1420
    Thermal Conductivity [W/(m×K)]9.71 @ 293K
    Thermal Expansion [10-6/K]18.5 @ 273K
    Knoop Hardness [kg/mm2]158.3
    Specific Heat Capacity [J/(kg×K)]854
    Dielectric Constant6.76 @ 1 MHz
    Young's Modulus (E) [GPa]75.8
    Shear Modulus(G) [GPa]33.77
    Bulk Modulus(K) [GPa]82.71
    Poisson Coefficient0.26
    Chemical Properties
    Solubility / g/L0.016g @ 20℃
    Molecular Weight / g/mol78.0748

    Calcium Fluoride Transmittance CurveCalcium Fluoride Transmittance Curve

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