So the lampshade is like a flower, you turn on the lamp, the bimetal strips warm up
and bend outwards to open the lampshade.
Turn it off and the strips cool down, contract and close around the bulb.
Basically yes, also if they are not bimetal, so i will give you this as win :beer:
The "petals" are made with SMA (shape memory alloy), and moves in accord with the more or less luminosity (and heat) that you set, and also for the air currents around the lamp.