Optical imaging lens assembly

Patent metadata

Field	Value
Publication number	US-12461346-B2
Application number	US-202217572506-A
Country	US
Kind code	B2
Filing date	Jan 10, 2022
Priority date	Jan 25, 2021
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

The present disclosure provides an optical imaging lens assembly, along an optical axis from an object side to an image side, sequentially includes: a first lens having positive refractive power; an autofocus component; a second lens having a refractive power; a third lens having a refractive power; a fourth lens having a refractive power; and at least one subsequent lens having a refractive power. At least one surface from an object-side surface of the first lens to an image-side surface of the at least one subsequent lens is an aspheric surface; the first lens and the autofocus component are cemented together; and a radius of curvature of an image-side surface of the autofocus component is variable.

First claim

What is claimed is:

1 . An optical imaging lens assembly, along an optical axis from an object side to an image side, sequentially comprising:
a first lens having a positive refractive power, and an image-side surface of the first lens is a flat surface; an autofocus component having a refractive power; a second lens having a refractive power; a third lens having a refractive power; a fourth lens having a refractive power; and at least one subsequent lens having a refractive power; wherein the first lens and the autofocus component are cemented together; a radius of curvature of an image-side surface of the autofocus component is variable; a distance TTL from an object-side surface of the first lens to an imaging plane of the optical imaging lens assembly on the optical axis, a sum of center thicknesses D of the autofocus component and the first lens on the optical axis, and a center thickness CT1 of the first lens on the optical axis satisfy: 3.0<TTL/(D+CT1)<4.0; and at least one surface from an object-side surface of the first lens to an image-side surface of the at least one subsequent lens is an aspheric surface.

2 . The optical imaging lens assembly according to claim 1 , wherein an effective focal length f4 of the fourth lens and a radius of curvature R8 of an image-side surface of the fourth lens satisfy: −6.5<f4/R8<−1.0.

3 . The optical imaging lens assembly according to claim 1 , wherein a radius of curvature R3 of an object-side surface of the second lens and a radius of curvature R4 of an image-side surface of the second lens satisfy: 4.0<R3/R4<7.0.

4 . The optical imaging lens assembly according to claim 1 , wherein the at least one subsequent lens includes a fifth lens, and a radius of curvature R9 of an object-side surface of the fifth lens and a radius of curvature R10 of an image-side surface of the fifth lens satisfy: 0.5<|R9/R10|<3.5.

5 . The optical imaging lens assembly according to claim 1 , wherein the sum of center thicknesses D of the autofocus component and the first lens on the optical axis and a sum of center thicknesses ΣCT of all lenses from the first lens to the at least one subsequent lens on the optical axis satisfy: 2.0<ΣCT/D<3.5.

6 . The optical imaging lens assembly according to claim 1 , wherein the at least one subsequent lens includes a fifth lens, and a center thickness CT4 of the fourth lens on the optical axis and a center thickness CT5 of the fifth lens on the optical axis satisfy: 0.5<CT4/CT5<2.5.

7 . The optical imaging lens assembly according to claim 1 , wherein a center thickness CT3 of the third lens on the optical axis and a center thickness CT2 of the second lens on the optical axis satisfy: 1.0<CT3/CT2<1.5.

8 . The optical imaging lens assembly according to claim 1 , wherein a spaced interval T34 between the third lens and the fourth lens on the optical axis and a spaced interval T T-2 between the autofocus component and the second lens on the optical axis satisfy: 1.0<T34/T T-2 <3.5.

9 . The optical imaging lens assembly according to claim 1 , wherein the distance TTL from the object-side surface of the first lens to the imaging plane of the optical imaging lens assembly on the optical axis, and a half of a diagonal length ImgH of an effective pixel area on the imaging plane of the optical imaging lens assembly satisfy: 1.5<TTL/ImgH<2.0.

10 . The optical imaging lens assembly according to claim 1 , wherein the sum of center thicknesses D of the autofocus component and the first lens on the optical axis and a sum of center thicknesses ΣCT of all lenses from the first lens to the at least one subsequent lens on the optical axis satisfy: 2.58≤ΣCT/D<3.5.

11 . The optical imaging lens assembly according to claim 1 , wherein an effective focal length f2 of the second lens and an effective focal length f3 of the third lens satisfy: 1.0<f3/f2<4.5.

12 . The optical imaging lens assembly according to claim 1 , wherein a center thickness CT3 of the third lens on the optical axis and a center thickness CT2 of the second lens on the optical axis satisfy: 1.16≤CT3/CT2<1.5.

13 . The optical imaging lens assembly according to claim 1 , wherein the at least one subsequent lens includes a fifth lens, and a center thickness CT4 of the fourth lens on the optical axis and a center thickness CT5 of the fifth lens on the optical axis satisfy: 0.5<CT4/CT5≤2.18.

14 . The optical imaging lens assembly according to claim 1 , wherein a spaced interval T34 between the third lens and the fourth lens on the optical axis and a spaced interval TT-2 between the autofocus component and the second lens on the optical axis satisfy: 1.53≤T34/TT-2<3.5.

15 . The optical imaging lens assembly according to claim 1 , wherein the second lens has a negative refractive power, the third lens has a negative refractive power, and the fourth lens has a positive refractive power.

Assignees

• Zhejiang Sunny Optics Co Ltd

Inventors

• Gao Jinbo
• Wang Yuhao
• He Lingbo
• Huang Lin
• Dai Fujian
• Zhao Liefeng

Classifications

• G02B13/0045 Primary

  having five or more lenses · CPC title

• G02B13/006

  at least one element being a compound optical element, e.g. cemented elements · CPC title

• G02F1/29

  for the control of the position or the direction of light beams, i.e. deflection · CPC title

• G02B9/60

  having five components only · CPC title

• G02B3/14

  of variable focal length · CPC title