US 9,810,889 B2
Zoom lens and imaging apparatus
Tetsuya Ori, Saitama-ken (JP); and Michio Cho, Saitama-ken (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Mar. 2, 2015, as Appl. No. 14/635,195.
Application 14/635,195 is a continuation of application No. PCT/JP2013/004897, filed on Aug. 19, 2013.
Claims priority of application No. 2012-194735 (JP), filed on Sep. 5, 2012.
Prior Publication US 2015/0177500 A1, Jun. 25, 2015
Int. Cl. G02B 27/64 (2006.01); G02B 15/14 (2006.01); G02B 15/163 (2006.01); G02B 15/173 (2006.01); G02B 15/20 (2006.01)
CPC G02B 15/163 (2013.01) [G02B 15/173 (2013.01); G02B 15/20 (2013.01); G02B 27/646 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A zoom lens consisting of:
a first lens group having positive refractive power;
a second lens group having negative refractive power;
a third lens group having positive refractive power;
a fourth lens group having positive refractive power; and
a fifth lens group having positive refractive power in this order from an object side,
wherein the third lens group consists of a 3-1st lens group having positive refractive power and a 3-2nd lens group having negative refractive power in this order from the object side, and
wherein the 3-1st lens group consists of a positive lens, a negative lens and a positive lens in this order from the object side, and
wherein a hand shake blur is corrected by moving the 3-2nd lens group in a direction perpendicular to an optical axis, and
wherein magnification is changed by changing distances between the lens groups while the fifth lens group is fixed, and
wherein the fourth lens group consists of a 4-1st lens group having positive refractive power and 4-2nd lens group having negative refractive power in this order from the object side, and
wherein focusing is performed by moving the 4-2nd lens group in an optical axis direction.