Curiosity: a repeating desing

In some wall and ceiling lamps, there is a basic design that repeats itself.

Bobo Piccoli called it Clessidra for Fontana Arte, Afra and Tobia Scarpa used it in both the Ariette and the Folio wall lamp, and Tronconi in the Quadrotto model. Two inverted semicircles inscribed in a square, a simple geometric line that allows you to create dynamic solutions by combining them.

Do you know of other lamps that follow this line?