Sounds like the patent is for the IS ???
JP 2014-209144 in the content on the improvement of miniaturization and sensitivity of anti-vibration group, is intended to achieve the correction of the big shake angle with a small eccentricity. Since requires only a little to move the small anti-vibration group, It is likely to contribute to the speeding up of energy saving and image stabilization.
JP 2014-209145 the design was enriched peripheral illumination of the wide-angle side, also seems that realizes the AF speed by adopting a simple structure that does not use the floating focus. Although telephoto lens is often what focus group simple except for the macro, this is because it is often used in motion photography and sports and wild birds and aircraft, I AF speed is the top priority.