Looks funny but could be the future: Sony liquid lens technology.
The japanese blog Egami posted the latest Sony patents:
1) Sony liquid lens patent (Click here).
This is not the first Sony patent we found that describes the liquid lens technology. With such technology you can change the curvature of the lens by changing the voltage of the liquid. The advantages are:
-non-movement glasses for zoom or AF
-less glasses inside the lens
-faster electrical response
-non-motor on the glass
-silence AF mode
2) Sigma filed a patent in Japan (2011-059293) for what appears to be a 18-48mm lens for NEX cameras (via Photorumors). I really hope Sigma will make fast primes instead of this one