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        optical vender wloptical



        Item Round windows, square windows, brewster windows
        Material BK7, Fused Silica, CaF2, Germanium, silicon
        Design Wavelength Custmer design
        Dimension Tolerance +0/-0.05mm
        Thickness Tolerance +/-0.1mm
        Surface Quanlity 40-20 or better
        Surface Figure Sph surface: lambda/4 or better@632.8nm
        Parallelism ETV better than 0.01mm
        Clear Aperture 90% of diameter
        Bevel Protective bevel
        Coating BBAR or custmer design


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