Adywan:

Actually the Emperor hardly blinks at all in Jedi. For example, look at the scene where the Emperor is goading Luke while he watches the battle, then snaps and uses his sabre. Throughout the whole speech he doesn't blink once. The same thing in other scenes

Ady, clearly some folk don't pay attention to movies very much. Most actors hardly EVER blink on screen when they're delivering lines, unless it's deliberately done to convey an emotion or thought.

Pick any movie with decent actors in it and watch how little you see them blink, and watch someone without them knowing and see the difference.

The eyes may be static, but the lack of blinking isn't the reason.