The latest patents from Ricoh, Canon and Sony

Ricoh 4.6-18mm f1.8-2.8 lens patent

Ricoh filed a patent application (2013-61573) for a 4.6-18mm f/1.8-2.8 lens (21-84mm equivalent) designed for a 1/1.7" size sensor.

Canon 400mm f4 DOE lens patent

Canon filed a patent (2013-64858) for 400mm f/4 DOE lens which could replace their current version.

Sony 4 split type RGB Bayer array patentSony 4 split type RGB Bayer array patent 2

Sony filed a patent 2013-66146 for a "4 way split type RGB Bayer array".

Sony AF light zoom patent Sony AF light zoom patent 2

Another Sony patent (2013-68761) describes a new AF LED light with an optical element that can be adjusted based on the currently used focal length for better AF lock in low light situations.

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