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        产品详细
        • 产品名称: Sapphire
        • 产品编号: 205
        • 浏览次数: 999

         

        Introduction: Sapphire is a superior window material with excellent transparency and thermal properties. It has high transmittance from 1.5um to 6um in the middle infrared. It also exhibits excellent physical and chemical properties. It is chemically inert and insoluble in almost everything and it can be scratched only by few substances (such as diamond or boron nitride) other than itself.
         
        Main Application:Substrate material, IR optics windows, Aerospace, analytical applications, medical applications etc..
         
        Main Properties:
        Crystal Type
        Hexagonal
        Lattice Parameter
        a=4.75Å, c=12.97Å
        Transmission Band
        0.15-6 um
        Mohs Hardness
        9
        Density
        3.98g/cm3
        Melting Point
        2040 ℃
        Refractive Index
        1.623 at 5um
        Specific Heat
        0.18cal/g/℃
        Thermal Expansion
        7.7x10-6/℃
        Thermal Conductivity
        4W/cm/℃

         

        CASTECH supply Sapphire widows and mirrors with:

         

        Orientation
        Random or C-cut within ±30 arc min
        Wave Front Distortion
        < 1/4 wave
        Diameter
        +0/-0.10mm
        Length
        +/-0.2mm
        Chamfer
        0.20+/-0.10mm @ 45°
        Flatness
        < 1/4 wave at 633nm
        Parallelism
        < 30 arc Seconds
        Perpendicularity
        < 5 arc min
        Surface Quality
        40/20 Scratch/Dig

         

         

        CASTECH supply Sapphire lenses with:

         

        Orientation
        Random or C-cut within ±30 arc min
        Wave Front Distortion
        < 1/4 wave
        Diameter
        +0/-0.10mm
        Length
        +/-0.2mm
        Paraxial Focal Length
        +/-2%
        Centration
        3 arc minutes
        Chamfer
        0.20+/-0.10mm @ 45°
        Flatness
        < 1/4 wave at 633nm
        Surface Quality
        60/40 Scratch/Dig