3D-crystal

Anyone who's ever been in one of those souvenir-shops, anywhere on the world, for the last 2 or 3 years, knows these glass/crystal blocks with a 3D image lasered inside.
This one I bought on a nightmarket in Taipei. Don't know what is inscripted inside ;)
I've also got one from Corfu.

To take this picture, I placed the block on my 4D maglite, to get the pixels to show and placed a white-LED next to it to light the front-characters, which are out-of-focus.
This picture has got the reflected pixels in the back in-focus and the rest out-of-focus. (so the focus is about 5 cm behind the object)