1870 (Royal Soc.) 160 601 As it approaches the objective,..[the point] being formed nearer to the latter after refocusing, a more divergent pencil engages a greater aperture of the searcher.
1947 41 57 The demand for greater economic security..led to the establishment of new agencies and the refocusing of existing activities.
2006 (Nexis) 10 Aug. c1 A special external sensor..handles the bulk of the refocusing extremely rapidly.