Transmitted: When you wear sunglasses you can still see, which means some of the light passes through allowing you to have vision.
Reflected: The surface of your sunglasses are shiny, so some of the light bounces off the surface and goes somewhere else.
Absorbed: Sunglasses are designed to decrease the intensity of the light passing to your eyes, which is why they are almost black. This means the black material of the lens absorb a little of the light. This is why things look darker with sunglasses on.
Hope this helps, and May the Force Be WIth you!
-Jabba
