Patent ID: 11966100
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 positive refractive power;
a second lens having a refractive power;
a third lens having a negative refractive power;
a fourth lens having a refractive power;
a fifth lens having a convex object-side surface in an optical axis region thereof, and a concave image-side surface in an optical axis region thereof; and
a sixth lens having a positive refractive power,
wherein the first to sixth lenses are sequentially disposed along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system,
0.7<TL/f<1.0, where TL is a distance along the optical axis from an object-side surface of the first lens to the imaging plane, and f is a total focal length of the optical imaging system,
a radius of curvature of an image-side surface of the third lens at the optical axis is greater than a radius of curvature of the image-side surface of the fifth lens at the optical axis, and
a radius of curvature of an image-side surface of the second lens at the optical axis is greater than a radius of curvature of an image-side surface of the first lens at the optical axis.