Patent ID: 11899183
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A high resolution optical system comprising, sequentially from an object side:
a first lens having a positive refractive power;
a second lens having a negative refractive power;
a third lens having a positive refractive power;
a fourth lens having a negative refractive power;
a fifth lens having a positive refractive power and a convex image-side surface; and
a sixth lens having a negative refractive power and a concave object-side surface at an optical axis,
wherein a thickness of the first lens at the optical axis is greater than a thickness of the third lens at the optical axis, a thickness of the sixth lens at the optical axis is greater than a thickness of the fourth lens at the optical axis, a distance from an image-side surface of the second lens to an object-side surface of the third lens is greater than a distance from an image-side surface of the first lens to an object-side surface of the second lens, a radius of curvature of the object-side surface of the second lens is greater than a radius of curvature of an object-side surface of the first lens and a radius of curvature of the image-side surface of the first lens, and a radius of curvature of an image-side surface of the third lens is greater than a radius of curvature of an object-side surface of the fourth lens,
wherein the optical system satisfies |f4/f|>2.5, where f4 is a focal length of the fourth lens, and f is a focal length of the entire optical system, and
wherein a distance from an image-side surface of the fourth lens to an object-side surface of the fifth lens is greater than a distance from the image-side surface of the second lens to the object-side surface of the third lens.