US 12,436,365 B2
Zoom lens, camera module, and mobile terminal
Xiuwen Yao, Wuhan (CN); Shaopan Zhou, Dongguan (CN); and Yuanlin Jia, Shenzhen (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Aug. 26, 2022, as Appl. No. 17/896,155.
Application 17/896,155 is a continuation of application No. PCT/CN2020/140443, filed on Dec. 28, 2020.
Claims priority of application No. 202010132347.7 (CN), filed on Feb. 29, 2020.
Prior Publication US 2023/0003971 A1, Jan. 5, 2023
Int. Cl. G02B 9/60 (2006.01); G02B 7/10 (2021.01)
CPC G02B 9/60 (2013.01) [G02B 7/10 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A zoom lens, comprising:
a first lens group;
a second lens group;
a third lens group;
a fourth lens group; and
a fifth lens group, wherein the first lens group, the second lens group, the third lens group, the fourth lens group, and the fifth lens group are arranged from an object side to an image side, and wherein
the first lens group has a positive focal power,
the second lens group has a negative focal power,
the third lens group has a positive focal power,
the fourth lens group has a positive focal power or a negative focal power,
the fifth lens group has a positive focal power or a negative focal power,
the first lens group, the third lens group, and the fifth lens group are fixed lens groups,
the second lens group is a zoom lens group and is configured to slide between the first lens group and the third lens group along an optical axis,
the fourth lens group is a compensation lens group and is configured to slide between the third lens group and the fifth lens group along the optical axis,
a movement stroke of the second lens group along the optical axis meets the following criteria:
a ratio of the movement stroke of the second lens group along the optical axis to a total length from a surface of the zoom lens closest to the object side to an imaging plane is greater than or equal to 0.1 and less than or equal to 0.3,
a movement stroke of the fourth lens group along the optical axis meets the following criteria:
a ratio of the movement stroke of the fourth lens group along the optical axis to a total length from the surface of the zoom lens closest to the object side to the imaging plane is greater than or equal to 0.01 and less than or equal to 0.25, and
an image height IMH of the zoom lens and an effective focal length ft of the zoom lens at a telephoto end meet the following criteria: 0.02≤|IMH/ft|≤0.20.