Jansjo reading lampshade with diffuser

My wife uses an IKEA Jansjo light on her bedside table for reading, and it's a little too bright for that task. This dims the light to your preferred level and narrows the beam so the room stays nice and dark. Works great!

Thanks to vertigo235 for sharing the editable file, and the great attachment mechanism. After breaking one of the clamps (be careful not to rough it up too much!) I tweaked the design to make the clamps thicker at the base, which should hopefully distribute the force during flexion a little bit. Other than that I narrowed the cone and added a snap-in diffuser.

Comments welcome!