Patent ID: 11953662
Assignee: RICOH COMPANY, LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A zoom lens comprising, sequentially from an object side toward an image side:
a first lens group having positive refractive power;
a second lens group having negative refractive power; and
a rear group,
the second lens group consisting of, sequentially from the object side toward the image side:
a second sub-first lens group having positive or negative power; and
a second sub-second lens group having negative power,
the second sub-second lens group consisting of, sequentially from the object side toward the image side:
a positive second-first lens component;
a negative second-second lens component; and
a negative second-third lens component, wherein
during zooming from a short focal length end to a long focal length end, a distance between the first lens group and the second lens group increases, and a distance between the second lens group and the rear group decreases, and
a part of the second lens group is movable in a direction perpendicular to an optical axis during correction of image blurring.