Ricoh filed patent 2012211956 in Japan for a 5.3-22mm f/2-3.5 lens designed for a 1/1.7" sensor (24-100mm equivalent). The lens design contains 11 elements in 8 groups, including two aspherical elements. This lens could be designed for the Pentax Q system, which has a 1/2.3" sensor, or for a new GXR module.
