Patent ID: 11867879
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An optical imaging system comprising:
a first lens having a negative refractive power and a concave image-side surface along an optical axis;
a second lens having a positive refractive power and a concave image-side surface along the optical axis;
a third lens having a refractive power and a convex object-side surface along the optical axis;
a fourth lens having refractive power and a convex object-side surface along the optical axis;
a fifth lens having positive refractive power, a concave object-side surface along the optical axis, and a convex image-side surface along the optical axis; and
a sixth lens having a negative refractive power,
wherein the first to sixth lenses are sequentially arranged in ascending numerical order along an optical axis from an object side of the optical imaging system toward an imaging plane of the optical imaging system, and
0.2<|f1/f2|<0.4 is satisfied, where f1 is a focal length of the first lens and f2 is a focal length of the second lens.