|You can see the light sensor (photoresistor) here|
It's held together with three TA20 (triangle) right-hand threaded screws. These puzzled me for a bit because I figured they'd be standard threaded, but nope...they have reverse threads.
|Lots of patents|
|The LED under the globe is for making the globe glow.|
|Spring contacts allow for 360 degree rotation. Clever|
|Bottom: gray piece that holds in plug contacts. The clear piece is the photoresistor protector.|