Patent ID: 11914114
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 positive refractive power, a second lens having negative refractive power, a third lens having positive refractive power, a fourth lens having negative refractive power, a fifth lens having positive refractive power and comprising a convex object-side surface and a convex image-side surface, and a sixth lens having negative refractive power, sequentially arranged from an object side of the optical imaging system,
wherein each of the second lens to the fourth lens has a refractive index greater than 1.61, and
wherein 0.35<R1/f<0.40; and

TTL/(2*IMG HT)<0.69,

where R1 is a radius of curvature of an object-side surface of the first lens, f is an overall focal length of the optical imaging system, TTL is a distance on an optical axis from the object-side surface of the first lens to an image capturing surface, and IMG HT is half of a diagonal length of the image capturing surface.