US 11,886,037 B2Granted

Optical imaging system

AssigneeSamsung Electro-Mechanics Co., Ltd.

InventorsDong Hyuk Jang, Byung Hyun Kim, Jae Hyuk Huh, Yong Joo Jo

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Abstract

An optical imaging system includes a plurality of lenses disposed along an optical axis from an object side of the optical imaging system toward an imaging plane of the optical imaging system. The lenses are separated from each other by respective air gaps along the optical axis between the lenses. The lenses include a first lens closest to the object side of the optical imaging system. The conditional expressions 1.5 mm<Gmax, TL<12.0 mm, and 0.15<R1/f are satisfied, where Gmax is a maximum air gap along the optical axis among all of the air gaps, TL is a length of the optical imaging system along the optical axis from an object-side surface of the first lens to the imaging plane, R1 is a radius of curvature of the object-side surface of the first lens, and f is a focal length of the optical imaging system.

Claims21

Dependent claims

An optical imaging system comprising:

a first lens group comprising a first lens, the first lens being disposed closest to an object side of the optical imaging system among all lenses of the optical imaging system;
and
a second lens group disposed between the first lens group and an imaging plane of the optical imaging system,
wherein the first lens group is configured to be movable to increase and decrease a distance between the first lens group and the second lens group, and
a ratio TLs/TL of a length TLs of the optical imaging system along an optical axis of the optical imaging system from an object-side surface of the first lens to the imaging plane in a state in which the first lens group has been moved to decrease the distance between the first lens group and the second lens group to a length TL of the optical imaging system along the optical axis from the object-side surface of the first lens to the imaging plane in a state in which the first lens group has been moved to increase the distance between the first lens group and the second lens group is greater than 0.70 and less than 0.79.

2 more elements

An optical imaging system comprising:

a first lens group disposed on an optical axis of the optical imaging system at an object side of the optical imaging system;
and
a second lens group disposed on the optical axis between the first lens group and an imaging plane of the optical imaging system,
wherein the first lens group is configured to be movable between a first position at which a first length of the optical imaging system along the optical axis from an object-side surface of the first lens group to the imaging plane is TL, and a second position at which a second length of the optical imaging system along the optical axis from the object-side surface of the first lens group to the imaging plane is TLs, and
TL and TLs satisfy the following conditional expression:
0.70<TLs/TL<0.79.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/320,565Filed 14 May 2021
Priority: KR 10-2020-012343624 Sep 2020
Published: US 2022/0091367 A124 Mar 2022
Granted: 30 Jan 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G02B 9/04
Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -: having two…
G02B 9/10
Having two components only: one + and one - component
G02B 9/12
Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -: having three…
G02B 13/003
Having at least one aspherical surface: having two lenses