US 9,813,603 B2
Lens unit, imaging device, and control method
Tomoomi Ito, Kanagawa (JP); Rui Chen, Tokyo (JP); Makoto Kanai, Tokyo (JP); Fumikazu Kanetaka, Chiba (JP); and Naoki Miyagawa, Kanagawa (JP)
Assigned to SONY CORPORATION, Tokyo (JP)
Filed by SONY CORPORATION, Tokyo (JP)
Filed on Apr. 14, 2016, as Appl. No. 15/99,226.
Claims priority of application No. 2016-017925 (JP), filed on Feb. 2, 2016.
Prior Publication US 2017/0223246 A1, Aug. 3, 2017
Int. Cl. H04N 5/232 (2006.01); G02B 7/08 (2006.01); G02B 7/36 (2006.01)
CPC H04N 5/232 (2013.01) [G02B 7/08 (2013.01); G02B 7/36 (2013.01)] 29 Claims
OG exemplary drawing
 
1. A lens unit comprising:
a plurality of focus lenses;
a plurality of actuators respectively corresponding to the plurality of focus lenses and configured to move each of the plurality of focus lenses; and
control circuitry configured to control movement of the plurality of focus lenses according to a rule in a case of a position of at least one of the plurality of focus lenses being outside a designated range of satisfactory optical performance, the rule being different from a rule in a case of the position all of the plurality of focus lenses being inside the designated range,
wherein the control circuitry performs control to change a movement direction of at least one of the focus lenses based on a change of the position of each of the plurality of focus lenses from being inside the range to being outside the range.