These glasses made a company called Adlens can be filled with liquid to allow you to adjust the magnification simply by turning the dial. The glasses are expected to be used a cost effective solution for the billions of people who can’t afford to get normal glasses. If you’re really nerdy, according to the company here’s how it works:
The variable lens power comes from a clear, high refractive index fluid. The fluid is pumped into (or out of) the chamber between the plastic-like sheet and the lens. As the amount of oil increases, it pushes on the plastic sheet, changing its curvature. The more it curves, the more the lens power increases.
When the fluid is pumped back out, the lens curvature flattens, reducing the power. The base hard lens has a negative power, meaning that with little or no oil, objects are demagnified.
This idea can change the world……
