No, it looks weird. The middle of the socket looks in real life as if it is made of dark blue glass, though in the socket picture it just looks dark. I've never seen anything like it before.
Then again, I'm not normally mechanical, so maybe it's something common I haven't noticed.
At first, I thought that regular (Edison?) light bulb bases had broken off and gotten stuck in the socket, because it looks like it has separate inside and outside portions. I tried twisting a couple of them off with needle nose pliers, but they bent instead of moving until I concluded they were really all one fixed assembly. Also, all three are alike, so they probably wouldn't be so uniform if they just broke off.