Optical imaging lens assembly

Patent metadata

Field	Value
Publication number	US-12197032-B2
Application number	US-202117558513-A
Country	US
Kind code	B2
Filing date	Dec 21, 2021
Priority date	Jan 25, 2021
Publication date	Jan 14, 2025
Grant date	Jan 14, 2025

Abstract

An optical imaging lens assembly is provided, along an optical axis from an object side to an image side, sequentially includes: a first lens having refractive power; an autofocus assembly; a second lens having refractive power, and an image-side surface of the second lens being a concave surface; a third lens having refractive power, and an image-side surface of the third lens being a convex surface; a fourth lens having refractive power, an object-side surface of the fourth lens being a concave surface, and an image-side surface of the fourth lens being a convex surface; and at least one subsequent lens having refractive power. A radius of curvature of an object-side surface of the autofocus assembly being 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 refractive power;
an autofocus assembly, and a radius of curvature of an object-side surface of the autofocus assembly being variable;
a second lens having refractive power, and an image-side surface of the second lens being a concave surface;
a third lens having refractive power, and an image-side surface of the third lens being a convex surface;
a fourth lens having refractive power, an object-side surface of the fourth lens being a concave surface, and an image-side surface of the fourth lens being a convex surface; and
at least one subsequent lens having refractive power;
wherein a radius of curvature R6 of the image-side surface of the third lens and an effective focal length f3 of the third lens satisfy: 0.5<|R6/f3|<2.5.

2. The optical imaging lens assembly according to claim 1 , wherein the at least one subsequent lens comprises a fifth lens, and wherein a total effective focal length f of the optical imaging lens assembly and a radius of curvature R10 of an image-side surface of the fifth lens satisfy: 1.0<|f/R10|<5.5.

3. The optical imaging lens assembly according to claim 1 , wherein an effective focal length f1 of the first lens and a radius of curvature R1 of an object-side surface of the first lens satisfy: 1.5<f1/R1<2.5.

4. 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 the image-side surface of the fourth lens satisfy: −3.0<f4/R8<−2.0.

5. The optical imaging lens assembly according to claim 1 , wherein a center thickness CT1 of the first lens on the optical axis and a center thickness D of the autofocus assembly on the optical axis satisfy: 1.0<CT1/D<2.0.

6. The optical imaging lens assembly according to claim 1 , wherein a center thickness CT4 of the fourth lens on the optical axis and a center thickness CT2 of the second lens on the optical axis satisfy: 2.0<CT4/CT2<5.0.

7. The optical imaging lens assembly according to claim 1 , wherein half of a maximum field-of-view Semi-FOV of the optical imaging lens assembly satisfies: Semi-FOV>25°.

8. The optical imaging lens assembly according to claim 1 , wherein a distance TTL from the object-side surface of the first lens to an imaging plane of the optical imaging lens assembly on the optical axis and 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<2.1.

9. The optical imaging lens assembly according to claim 1 , wherein the autofocus assembly along the optical axis from the first lens to the second lens sequentially comprises: a flexible film, a liquid material, and a light-transmitting module, wherein,
the flexible film is arranged on an object-side surface of the liquid material; and
an image-side surface of the liquid material is glued to the light-transmitting module.

10. An optical imaging lens assembly, along an optical axis from an object side to an image side, sequentially comprising:
a first lens having refractive power;
an autofocus assembly, and a radius of curvature of an object-side surface of the autofocus assembly being variable;
a second lens having refractive power, and an image-side surface of the second lens being a concave surface;
a third lens having refractive power, and an image-side surface of the third lens being a convex surface;
a fourth lens having refractive power, an object-side surface of the fourth lens being a concave surface, and an image-side surface of the fourth lens being a convex surface; and
at least one subsequent lens having refractive power;
wherein a center thickness D of the autofocus assembly on the optical axis and a spaced interval T 1-T between the first lens and the autofocus assembly on the optical axis satisfy: 1.5<D/T 1-T <6.0.

11. An optical imaging lens assembly, along an optical axis from an object side to an image side, sequentially comprising:
a first lens having refractive power;
an autofocus assembly, and a radius of curvature of an object-side surface of the autofocus assembly being variable;
a second lens having refractive power, and an image-side surface of the second lens being a concave surface;
a third lens having refractive power, and an image-side surface of the third lens being a convex surface;
a fourth lens having refractive power, an object-side surface of the fourth lens being a concave surface, and an image-side surface of the fourth lens being a convex surface; and
at least one subsequent lens having refractive power;
wherein the at least one subsequent lens comprises a fifth lens, and wherein a center thickness CT5 of the fifth lens on the optical axis and a spaced interval T34 between the third lens and the fourth lens on the optical axis satisfy: 1.0<T34/CT5<3.5.

Assignees

• Zhejiang Sunny Optics Co Ltd

Inventors

• Wang Xu
• Wang Yuhao
• He Lingbo
• Huang Lin
• Dai Fujian
• Zhao Liefeng

Classifications

• G02B3/0043

  Inhomogeneous or irregular arrays, e.g. varying shape, size, height · CPC title

• G02B26/004

  based on a displacement or a deformation of a fluid · CPC title

• G02B13/0075 Primary

  having an element with variable optical properties · CPC title

• G02B13/004

  having four lenses · CPC title

• G02B3/14

  of variable focal length · CPC title