Patent ID: 11933954
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: nan (nan)
Classification: CPC nan | IPC G

Claim 0:
1. A zoom lens system comprising, as a plurality of lens groups:
a first lens group having positive power;
a second lens group having negative power;
a third lens group having positive power;
a fourth lens group having positive power;
a fifth lens group having negative power; and
a following lens group,
the first, second, third, fourth, and fifth lens groups and the following lens group being arranged in this order such that the first lens group is located closer to an object than any other lens group and that the following lens group is located closer to an image than any other lens group, wherein
while the zoom lens system is zooming, intervals between the plurality of lens groups change,
while the zoom lens system is focusing from an infinity focus point through a shortest shooting range, the fifth lens group and a negative lens group included in the following lens group move,
the zoom lens system satisfies the following Inequality (1):

vd_pG3G4>75  (1)

where vd_pG3G4 is a maximum value of abbe numbers of one or more positive lenses included in the third lens group and the fourth lens group, and
the zoom lens system satisfies the following Inequality (2):

vd_pG3>75  (2), where vd_pG3 is an abbe number of each of at least two positive lenses included in the third lens group.