Patent ID: 11914104
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An optical system comprising:
a first lens comprising positive refractive power, a convex object-side surface and a concave image-side surface;
a second lens comprising refractive power and a convex object-side surface;
a third lens comprising negative refractive power, a convex object-side surface and a concave image-side surface;
a fourth lens comprising positive refractive power;
a fifth lens comprising negative refractive power and a convex object-side surface; and
a sixth lens comprising negative refractive power and a concave image-side surface,
wherein the first to sixth lenses are sequentially disposed from an object side to an image side,
wherein 0.35<TTL/(2*ImgH)<0.95 is satisfied, where TTL is a distance from the object-side surface of the first lens to an imaging surface of an image sensor and ImgH is half a diagonal length of the imaging surface of the image sensor,
wherein |f5/f|>2 is satisfied, where f5 is a focal length of the fifth lens and f is an overall focal length of the optical system,
wherein −2.5<|f/f34<−0.2 is satisfied, where f34 is a synthetic focal length of the third and fourth lenses,
wherein 0.2<|f/f3|<2.5 is satisfied, where f3 is a focal length of the third lens,
wherein 0<|f/f3|+|f/f4|<3 is satisfied, where f4 is a focal length of the fourth lens, and
wherein among the first to sixth lenses, the fifth lens has a largest absolute focal length value and the fourth lens has a second largest absolute focal length value.