Patent ID: 11899177
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An optical imaging system, comprising:
a first lens comprising a positive refractive power;
a second lens comprising a negative refractive power;
a third lens comprising a negative refractive power;
a fourth lens comprising a negative refractive power and a concave object-side surface in a paraxial region; and
a fifth lens comprising a positive refractive power,
wherein the first to fifth lenses are sequentially disposed from an object side to an imaging plane,
wherein one or more lenses among the first to fifth lenses are formed using a glass material,
wherein a thickness along an optical axis of the second lens is greater than a thickness along an optical axis of the third lens,
wherein a radius of curvature of an object-side surface of the second lens is greater than a radius of curvature of an image-side surface of the first lens and a radius of curvature of an image-side surface of the third lens, and
wherein a radius of curvature of an image-side surface of the fourth lens is greater than a radius of curvature of an object-side surface of the fourth lens.