PSF structures visible in normalized Stokes q (without instrumental polarization), u, and v (top), degree of linear polarization P, angle of linear polarization χ, and intensity (bottom) at a wavelength of 820 nm for a converging beam of light with an f-number of 61.3 that reflects off gold at an angle of incidence of 45°. The images are convolved with a top-hat kernel with a diameter equal to the full width at half maximum of the PSF in intensity. The images show the core of the PSF and the first three complete Airy rings. The positive x- and y-directions are upward and to the left, respectively.