US 11,994,749 B2Granted

Optical imaging system

AssigneeSamsung Electro-Mechanics Co., Ltd.

InventorsJu Hwa Son, Min Hyuk Im, Ga Young An, Yong Joo Jo

Life of this patent

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Abstract

An optical imaging system includes a first lens having a positive refractive power; a second lens having a refractive power; a third lens having a refractive power; a fourth lens having a refractive power and a concave image-side surface; a fifth lens having a refractive power; a sixth lens having a refractive power; a seventh lens having a refractive power; and an eighth lens having a refractive power and a concave object-side surface, wherein the first to eighth lenses are sequentially disposed in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system.

Claims12

Dependent claims

An optical imaging system, comprising:

a first lens having positive refractive power and a concave image-side surface;
a second lens having a refractive power and a concave image-side surface;
a third lens having a refractive power;
a fourth lens having a refractive power;
a fifth lens having positive refractive power;
a sixth lens having a refractive power;
a seventh lens having a refractive power;
and
an eighth lens having a refractive power,
wherein the first to eighth lenses are sequentially disposed in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system,
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
wherein 2.0|R15/R16|<5.0, where R15 is a radius of curvature of an object-side surface of the eighth lens and R16 is a radius of curvature of an image-side surface of the eighth lens.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/305,425Filed 24 Apr 2023 · continuation
Priority: KR 10-2018-007361426 Jun 2018
Published: US 2023/0251462 A110 Aug 2023
Granted: 28 May 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G02B 9/64
Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -: having more…
G02B 13/0045
Having at least one aspherical surface: having five or more lenses
G02B 7/02
Mountings, adjusting means, or light-tight connections, for optical elements: for lenses
G02B 7/021
For lenses: for more than one lens

Family

Application16/438,974Parent of this continuation · filed 12 Jun 2019
Application17/726,717Parent of this continuation · filed 22 Apr 2022
US 11,340,424 B2Parent of this continuation · filed 24 May 2022
US 2023/0251462 A1Pre-grant publication · published 10 Aug 2023
US 11,668,905 B2Parent of this continuation
US 2019/0391365 A1Published application
US 2022/0252832 A1Published application
US 11,994,749 B2This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

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