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The designers of Google Glass somewhat clunkily placed a tiny screen in front of one lens.
The designers of the OPPO Air Glass we looked at here instead placed a small projector on one stem, to cast data onto the lens from the side.
There's also a third way to do this: Engo Eyewear's designers have managed to fit the projector in the center of the glasses, astride the bridge of the nose, to cast data onto the lens.
Supposedly, it yields an effect like this:
The result of placing the projector on the bridge is that, unlike with the other two approaches, it's not visually obvious that the glasses contain a projector, if that matters to you.
If it's not obvious from the photos, Engo's target market is cyclists and runners who'd like to see basic information like speed, elapsed time, heart rate, distance, elevation or power. Users can choose three to see at a time, and a gesture sensor on the side allows you to swipe to a different screen.
What I'm curious about is, which of these three projector approaches will Apple—who has most certainly been working on a pair of AR glasses—go with for theirs? Or do you think they'll come up with something entirely new?
I’m a lapsed industrial designer. I was born in NYC and figured I’d die there, but a few years ago I abandoned New York to live on a farm in the countryside with my wife. We have six dogs.
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Three Different Design Approaches to Projecting Data onto an Eyeglass Lens
Is the eye focusing back and forth from the screen out to infinity or can the image be focused somehow so it is in focus with infinity?
It's hard enough to keep the nose pads of my regular glasses clean. I hope either the projector or lens is easy enough to remove so one can clean between them.