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

Claim 15:
16. The zoom lens according to claim 1,
wherein the negative second-second lens component of the second sub-second lens group is a cemented lens composed of a negative lens and a positive lens and is a vibration-isolating lens group movable in the direction perpendicular to the optical axis to correct image blurring, and
wherein conditional expression (15) below is satisfied:

10<ν_B2N−ν_B2P  (15)

where
ν_B2N denotes an Abbe number of the negative lens of the negative second-second lens component, and
ν_B2P denotes an Abbe number of the positive lens of the negative second-second lens component.