Optical imaging lens assembly

Patent metadata

Field	Value
Publication number	US-11733485-B2
Application number	US-202017002868-A
Country	US
Kind code	B2
Filing date	Aug 26, 2020
Priority date	Sep 6, 2019
Publication date	Aug 22, 2023
Grant date	Aug 22, 2023

Abstract

The present disclosure discloses an optical imaging lens assembly, and the optical imaging lens assembly includes, sequentially from an object side to an image side along an optical axis: a first lens having positive refractive power, and at least one subsequent lens having refractive power. An F-number Fno1 of the optical imaging lens assembly satisfies Fno1>3.5, where an object distance is finite, and an F-number Fno2 of the optical imaging lens assembly satisfies Fno2≥1.0, where the object distance is infinite.

First claim

What is claimed is:

1. An optical imaging lens assembly comprising, sequentially from an object side to an image side along an optical axis:
a first lens, having positive refractive power; and
at least one subsequent lens having refractive power,
wherein ImgH/(To*Tan(FOV/2))>1.0,
where ImgH is half of a diagonal length of an effective pixel area on an image plane of the optical imaging lens assembly, To is a distance along the optical axis from an object being photographed to an object-side surface of the first lens, and FOV is a maximal field-of-view angle of the optical imaging lens assembly,
wherein ΣAT/Td<0.3, and
wherein ΣSAT is a sum of spaced intervals along the optical axis between each two adjacent lenses among all the lenses, and Td is a distance along the optical axis from the object-side surface of the first lens to an image-side surface of the lens closest to the image plane.

2. The optical imaging lens assembly according to claim 1 , wherein an F-number Fno 1 of the optical imaging lens assembly satisfies Fno 1 >3.5, where an object distance is finite, and
an F-number Fno 2 of the optical imaging lens assembly satisfies Fno 2 ≥1.0, where the object distance is infinite.

3. The optical imaging lens assembly according to claim 1 , wherein the optical imaging lens assembly further includes a stop, and Sd/Td≤0.7,
where Sd is a distance along the optical axis from the stop to the image-side surface of the lens closest to the image plane, and Td is a distance along the optical axis from the object-side surface of the first lens to the image-side surface of the lens closest to the image plane.

4. The optical imaging lens assembly according to claim 1 , wherein ΣCT/TTL<0.5,
where ΣCT is a sum of center thicknesses along the optical axis of all the lenses, and TTL is a distance along the optical axis from the object-side surface of the first lens to the image plane of the optical imaging lens assembly.

5. The optical imaging lens assembly according to claim 1 , wherein 0.5<BFL/TTL<0.9,
where BFL is a distance along the optical axis from the image plane to the image-side surface of the lens closest to the image plane, and TTL is a distance along the optical axis from the object-side surface of the first lens to the image plane of the optical imaging lens assembly.

6. The optical imaging lens assembly according to claim 1 , wherein 2<TTL/f<4,
where TTL is a distance along the optical axis from the object-side surface of the first lens to the image plane of the optical imaging lens assembly, and f is a total effective focal length of the optical imaging lens assembly.

7. The optical imaging lens assembly according to claim 1 , wherein DT 11 /ImgH<0.5,
where DT 11 is an effective radius of the object-side surface of the first lens, and ImgH is half of the diagonal length of the effective pixel area on the image plane of the optical imaging lens assembly.

8. The optical imaging lens assembly according to claim 1 , wherein 0.5<f/R 1 <5,
where f is a total effective focal length of the optical imaging lens assembly, and R 1 is a radius of curvature of the object-side surface of the first lens.

9. The optical imaging lens assembly according to claim 1 , wherein 0<f/f 1 <2.5,
where f is a total effective focal length of the optical imaging lens assembly, and f 1 is an effective focal length of the first lens.

10. The optical imaging lens assembly according to claim 1 , wherein TTL/To≤3.0,
where TTL is a distance along the optical axis from the object-side surface of the first lens to the image plane of the optical imaging lens assembly, and To is a distance along the optical axis from the object being photographed to the object-side surface of the first lens.

11. The optical imaging lens assembly according to claim 1 , wherein f*tan(FOV/2)/ImgH<0.5,
where f is a total effective focal length of the optical imaging lens assembly, ImgH is half of the diagonal length of the effective pixel area on the image plane of the optical imaging lens assembly, and FOV is the maximal field-of-view angle of the optical imaging lens assembly.

12. An optical imaging lens assembly comprising, sequentially from an object side to an image side along an optical axis:
a first lens, having positive refractive power; and
at least one subsequent lens having a refractive power,
wherein an F-number Fno 1 of the optical imaging lens assembly satisfies Fno 1 >3.5, where an object distance is finite, and
an F-number Fno 2 of the optical imaging lens assembly satisfies Fno 2 ≥1.0, where the object distance is infinite,
wherein 2<TTL/f<4, and
where TTL is a distance along the optical axis from an object-side surface of the first lens to an image plane of the optical imaging lens assembly, and f is a total effective focal length of the optical imaging lens assembly.

13. The optical imaging lens assembly according to claim 12 , wherein DT 11 /ImgH<0.5,
where DT 11 is an effective radius of the object-side surface of the first lens, and ImgH is half of a diagonal length of an effective pixel area on the image plane of the optical imaging lens assembly.

14. The optical imaging lens assembly according to claim 12 , wherein 0.5<f/R 1 <5,
where R 1 is a radius of curvature of the object-side surface of the first lens.

15. The optical imaging lens assembly according to claim 12 , wherein 0<f/f 1 <2.5,
where f 1 is an effective focal length of the first lens.

16. The optical imaging lens assembly according to claim 12 , wherein TTL/To≤3.0,
where To is a distance along the optical axis from an object being photographed to the object-side surface of the first lens.

17. The optical imaging lens assembly according to claim 12 , wherein f*tan(FOV/2)/ImgH<0.5,
where ImgH is half of a diagonal length of an effective pixel area on an image plane of the optical imaging lens assembly, and FOV is a maximal field-of-view angle of the optical imaging lens assembly.

Assignees

• Zhejiang Sunny Optical Co Ltd

Inventors

• Lyu Saifeng
• Dai Fujian
• Zhao Liefeng

Classifications

• G02B13/0025 Primary

  having one lens only · CPC title

• G02B9/02

  having one + component only (simple lenses G02B3/00) · CPC title

• G02B27/0025

  for optical correction, e.g. distorsion, aberration · CPC title

• G02B13/002 Primary

  having at least one aspherical surface · CPC title

• G02B9/10 Primary

  one + and one - component · CPC title