Tunable eyeglass lenses to replace bifocals

Re:Tunable eyeglass lenses to replace bifocals by Groxx on Sunday February 05, 2017 @12:13PM (#13573302)

Beyond a built-in motor, rangefinder, and extremely minor circuitry, are these actually different from a 2008 version? http://cvdw.org/ Seems like you could use off-the-shelf stuff and still fit it into that enormous frame.

edit: ah, maybe this? (from: http://www.ece.utah.edu/2017/01/26/i-can-see-clearly-now/ , thanks! https://news.ycombinator.com/item?id=13572830)

>Hasan says the lenses can change focus from one object to another in 14 milliseconds

Pretty speedy, especially if that's the total time to focus and settle. Might miniaturize enough to be a normal-ish set of glasses, given time.

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Re:Tunable eyeglass lenses to replace bifocals by dorfsmay on Sunday February 05, 2017 @02:39PM (#13574119)

So these are autofocus for you eyes (there's not much meat in the article)?

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Re:Tunable eyeglass lenses to replace bifocals by Groxx on Sunday February 05, 2017 @03:40PM (#13574504)

Basically. There's a rangefinder in the frame, whatever you point your head at shifts the lens focus for your prescription, which means it can handle bi/tri/infinite-focal with no problem. A more 'real' example would probably use eye tracking, but the demo is much more about the lens adjustment than auto-tracking (seems tacked on to make it more interesting / a more complete demo).

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