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        optical vender wloptical

        Powell lens


        Powell lens is used to generate straight line. With aspherical curvature on its apex, the output line from powell lenses is even distribution of energy. For comparison, Cylindrical lenses generate gaussian beam profiles with hot-spot centre points and fading edges.

        The uniformity of output line is also related with incident wavelength, beam size, divergence, and working distance.

        To get even distribution of energy, the apex curvature needs to be slightly modified and optimized for particular laser beam.
        Fan Angle 5 deg, 20 deg, 25 deg, 30 deg,45 deg, 60 deg, 70 deg, 90 deg, 110 deg
        Material BK7, Fused Silica, SF6
        Design Wavelength Custmer design
        Dimension Tolerance +0/-0.05mm
        Thickness Tolerance +/-0.1mm
        Surface Quanlity 40-20 or better
        Surface Figure Cyl surface: lambda/2 or better@632.8nm
        Center Error ETV better than 0.01mm
        Clear Aperture 90% of diameter
        Bevel Protective bevel
        Coating BBAR or custmer design


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