My comment was mainly about when glasses shift slightly on your face, especially moving down the bridge. For conventional sunglasses, a small change in location has little effect, but for these, even a millimeter could correspond to over 10 pixels (depending on the dpi).
The pane is very close to the eye, so small changes are amplified if lines are extended outward into the scene being viewed.
Actually, to be more accurate, it wouldn't depend on the location of the pupil, but on the center of the eye (because the geometry is that when the eye looks in different directions, it rotates about this center). The pupil moves quite a lot, as you glance left and right.
Yes, you're right. So effectively the black spot is going to be of a sufficient size to create a shaded area over 95% of the area that the pupil is likely to be at any one time.
That's going to be difficult without having internally looking cameras that monitor the pupil.
Comments
My comment was mainly about when glasses shift slightly on your face, especially moving down the bridge. For conventional sunglasses, a small change in location has little effect, but for these, even a millimeter could correspond to over 10 pixels (depending on the dpi).
The pane is very close to the eye, so small changes are amplified if lines are extended outward into the scene being viewed.
Actually, to be more accurate, it wouldn't depend on the location of the pupil, but on the center of the eye (because the geometry is that when the eye looks in different directions, it rotates about this center). The pupil moves quite a lot, as you glance left and right.
Yes, you're right. So effectively the black spot is going to be of a sufficient size to create a shaded area over 95% of the area that the pupil is likely to be at any one time.
That's going to be difficult without having internally looking cameras that monitor the pupil.