US 12,413,863 B1
Optical system and camera module
Hang Yu, Zhejiang (CN); Anan Wu, Zhejiang (CN); Yu Wu, Zhejiang (CN); Meishan Guo, Zhejiang (CN); Hansheng Cen, Zhejiang (CN); Hao Zhang, Zhejiang (CN); Tongji Jiang, Zhejiang (CN); and Liguo Liu, Zhejiang (CN)
Assigned to NINGBO SUNNY OPOTECH CO., LTD, Zhejiang (CN)
Filed by NINGBO SUNNY OPOTECH CO., LTD, Zhejiang (CN)
Filed on May 11, 2025, as Appl. No. 19/204,574.
Claims priority of application No. 202411658809.3 (CN), filed on Nov. 19, 2024.
Int. Cl. H04N 23/68 (2023.01); G02B 7/10 (2021.01); G02B 13/00 (2006.01); G02B 15/14 (2006.01)
CPC H04N 23/687 (2023.01) [G02B 7/10 (2013.01); G02B 13/0065 (2013.01); G02B 15/1421 (2019.08)] 17 Claims
OG exemplary drawing
 
1. An optical system, sequentially comprising from an object side to an image side:
a first lens having a positive refractive power, wherein the first lens is configured to allow propagation of light rays along a first optical axis;
a reflective element, wherein the reflective element is configured to change light rays emitted from the first lens from propagating along the first optical axis to propagating along a second optical axis, wherein the first lens and the reflective element constitute a first element group; and
a second element group having a positive refractive power;
wherein during an anti-shaking process, a position of an image plane of the optical system remains fixed, and the first element group rotates around a direction parallel to the second optical axis;
an effective focal length f1 of the first lens and an effective focal length EFL of the optical system satisfy: 1.9<|f1/EFL|<3.0; and
the second element group comprises a second lens closest to the reflective element, and an angle α between a marginal ray of a central field of view after passing through the first lens and the first optical axis, and an angle β between a marginal ray of a central field of view after passing through the second lens and the second optical axis satisfy: 1.5<tan β/tan α<1.8.