Patent ID: 11860342
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 12:
13. An optical imaging system, comprising:
a first lens having positive refractive power, a convex object-side surface and a concave image-side surface, a second lens having negative refractive power, a convex object-side surface and a concave image-side surface, a third lens having positive refractive power, a fourth lens having negative refractive power, a fifth lens having negative refractive power; a sixth lens having positive refractive power, and a seventh lens having negative refractive power, sequentially arranged from an object side,
wherein the sixth lens has a concave image-side surface in a paraxial region,
TTL/(2*Img HT)<0.7, where a distance on an optical axis from an object-side surface of the first lens to an imaging plane of an image sensor is TTL, and half of a diagonal length of the imaging plane of the image sensor is Img HT, and
Fno<1.9, where an F-number of the optical imaging system is Fno.