Zsolt Miclós KOVÁCS-VAJNA
Zsolt Miclós KOVÁCS-VAJNA is a professor at the University of Brescia (Italy). He specializes in electronics and microelectronics. He teaches two courses "Electronics Circuit Design" and "Microelectronics". Also he creates wonderful wallpapers with impossible figures. Below you can see reduced copies of them. Full size images can be found at his site http://bsing.ing.unibs.it/~zkovacs/dp/images_wp.html
What you are looking at are 8 identical impossible triangles floating in space. Only the near and far triangles look like the typical illusion. The others look distorted because we are viewing them from a bad perspective.