The optical carpets are about optical effects and perception of depth.
"Fade" is triangular shapes turned unsharp and fading thus suggesting depth of planes. "Fold" is a 2D representation of a 3D object with 2 virtual light sources. A red arrow pattern is running across the 6 cubes. The Kilim "Wave" gives an optical Illusion of jumping and distortion overlaid with a 9 fields composition cross (as found on camera screens). It is as well a black pattern on white ground as a white pattern on black ground. The construction lines of the pattern can be seen as blue threads.
Kilim "Wave": 267x148cm, 4qm, Hand woven wool Rug "Fade": 270x157cm, 4,25qm, 26/30 knots/10cm2, Hand knotted wool with Turkish knot, pile 1cm Rug "Fold": 284x156cm, 4,4qm, 26/30 knots/10cm2, Hand knotted wool and cotton with Turkish knot, pile 1cm