Optical layout of the VL and UV light paths in the inverted-occultation coronagraph (measurements in mm). Top: ray-trace of the light path in the Metis coronagraph for both the UV and VL channels. Middle: primary mirror creates a real image of the diffracting inverted external occulter (IEO) inner edge of the cone at the internal occulter (IO) stop. Bottom: diffraction off the IEO illuminates the edges of the disk-light rejection mirror (M0). This in turn diffracts the disk-light on the primary mirror (M1). Here, M1 creates a real image of the M0 edges that is blocked by the Lyot stop (LS).