Engineering360: "Smart Glasses That Focus on What You Are Looking At"

It's a clever idea, but if several objects are in the user's field-of-view, some more distant than others, and the user is looking at a distant one but the IR reflects strongest from the nearest object, the glasses will focus on the wrong object. Similarly if the user is looking out a window at, say, kids playing in the yard, but the IR focuses the glasses on the window pane.

Definitely not something you would want to wear (in this most basic form) for anything like driving a car.

The quirk of infrared distance determined focusing might also be usefully leveraged. Payperview or content not suitable for some groups might be appropriately available to select groups by projecting out of focus images for which an appropriate correction distance is beamed via infrared to the glasses.

One can not simply refocus a blurry 2D image with optics.

You would need to replicate the entire 3D light field to do that.

There are some prototype light field displays, but they are experimental, small and very expensive.

You could certainly project a distorted images that only paying customers with the special glasses could see clearly.