US 12,474,553 B2
Zoom lens, camera module, and mobile terminal
Yajun Niu, Shanghai (CN); Xiuwen Yao, Wuhan (CN); and Haishui Ye, Shanghai (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Appl. No. 17/908,140
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
PCT Filed Mar. 12, 2021, PCT No. PCT/CN2021/080606
§ 371(c)(1), (2) Date Aug. 30, 2022,
PCT Pub. No. WO2021/185185, PCT Pub. Date Sep. 23, 2021.
Claims priority of application No. 202010183194.9 (CN), filed on Mar. 16, 2020.
Prior Publication US 2023/0359004 A1, Nov. 9, 2023
Int. Cl. G02B 15/14 (2006.01); G02B 15/28 (2006.01); G03B 5/00 (2021.01); G03B 17/17 (2021.01); H04N 23/55 (2023.01)
CPC G02B 15/144113 (2019.08) [G02B 15/28 (2013.01); G03B 5/00 (2013.01); G03B 17/17 (2013.01); H04N 23/55 (2023.01); G03B 2205/0046 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A A zoom lens, comprising:
a first lens group, a second lens group, a third lens group, and a fourth lens group that are arranged along an object side to an image side,
wherein the first lens group is a first fixed lens group with positive focal power,
wherein the second lens group is a zoom lens group with negative focal power,
wherein the third lens group is a compensative lens group with positive focal power,
wherein the fourth lens group is a second fixed lens group with positive focal power,
wherein, in a zooming process of the zoom lens from a short-focal end to a long-focal end, the second lens group moves towards the image side along an optical axis, and the third lens group moves towards the object side along the optical axis such that movements of the second lens group and the third lens group enable the zoom lens to perform continuous zooming,
wherein the first lens group comprises at least one lens with positive focal power and at least one lens with negative focal power, and a lens in the first lens group and closest to the object side has positive focal power,
wherein the second lens group comprises at least two lenses, and a lens in the second lens group and closest to the object side has negative focal power,
wherein the third lens group comprises at least two lenses, and a lens in the third lens group and closest to the object side has positive focal power, and
wherein the fourth lens group comprises at least one lens, and a lens in the fourth lens group and closest to the object side has positive focal power.