In my eyes, this is a decent-looking display cover for the Ender 3 V2 3D printer that prevents both dust from getting on the screen, and light from getting out when it's not wanted. It's slightly inspired by Forerunner architecture from Halo. The cover itself sits slightly above the screen so it doesn't touch it, and it fits well enough not to come off, but not tight enough to be challenging to remove or easy to get stuck.
The author marked this model as their own original creation.