Patent ID: 11886039
Assignee: ZHEJIANG SUNNY OPTICAL CO., LTD
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 14:
15. An optical imaging lens group, sequentially from an object side to an image side along an optical axis, comprising: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, each of which has refractive power,
wherein,
the first lens has positive refractive power, an object-side surface of the first lens is a convex surface, and an image-side surface of the first lens is a concave surface;
the second lens has negative refractive power, and an image-side surface of the second lens is a concave surface;
the fifth lens has positive refractive power;
the sixth lens has negative refractive power, and an object-side surface of sixth lens is a concave surface; and
2.72≤ImgH/(CT1+CT2+CT3+CT4)<3.0,
where ImgH is half of a diagonal length of an effective pixel area on an imaging plane of the optical imaging lens group,
CT1 is a center thickness of the first lens along the optical axis,
CT2 is a center thickness of the second lens along the optical axis,
CT3 is a center thickness of the third lens along the optical axis, and
CT4 is a center thickness of the fourth lens along the optical axis.