Camera lens group

Patent metadata

Field	Value
Publication number	US-11927728-B2
Application number	US-202117199576-A
Country	US
Kind code	B2
Filing date	Mar 12, 2021
Priority date	Aug 24, 2020
Publication date	Mar 12, 2024
Grant date	Mar 12, 2024

Abstract

A camera lens group including, a first lens having positive refractive power, a convex object-side surface and a concave image-side surface; a second lens having refractive power, a convex object-side surface and a concave image-side surface; a third lens having negative refractive power and a concave image-side surface; a fourth lens having positive refractive power, a convex object-side surface and a concave image-side surface; a fifth lens having refractive power, a convex object-side surface and a concave image-side surface; a sixth lens having positive refractive power, a concave object-side surface and a convex image-side surface; a seventh lens having refractive power; an eighth lens having refractive power and a convex image-side surface; a ninth lens having refractive power, a concave object-side surface and a convex image-side surface; and a tenth lens having negative refractive power, a concave object-side surface and a concave image-side surface.

First claim

What is claimed is:

1. A camera lens group, sequentially from an object side to an image side of the camera lens group along an optical axis, comprising:
a first lens having positive refractive power, a convex object-side surface and a concave image-side surface;
a second lens having refractive power, a convex object-side surface and a concave image-side surface;
a third lens having negative refractive power and a concave image-side surface;
a fourth lens having positive refractive power, a convex object-side surface and a concave image-side surface;
a fifth lens having refractive power, a convex object-side surface and a concave image-side surface;
a sixth lens having positive refractive power, a concave object-side surface and a convex image-side surface;
a seventh lens having refractive power;
an eighth lens having refractive power and a convex image-side surface;
a ninth lens having refractive power, a concave object-side surface and a convex image-side surface; and
a tenth lens having negative refractive power, a concave object-side surface and a concave image-side surface.

2. The camera lens group according to claim 1 , wherein 2.00<f 6 /f<4.00,
where f is a total effective focal length of the camera lens group, and f 6 is an effective focal length of the sixth lens.

3. The camera lens group according to claim 1 , wherein 2.00<R 20 /R 6 <5.00,
where R 6 is a radius of curvature of the image-side surface of the third lens, and R 20 is a radius of curvature of the image-side surface of the tenth lens.

4. The camera lens group according to claim 1 , wherein 8.00<CT 7 /T 67 <15.00,
where CT 7 is a center thickness of the seventh lens along the optical axis, and T 67 is a spaced interval between the sixth lens and the seventh lens along the optical axis.

5. The camera lens group according to claim 1 , wherein 2.00<CT 8 /T 910 <4.00,
where CT 8 is a center thickness of the eighth lens along the optical axis, and T 910 is a spaced interval between the ninth lens and the tenth lens along the optical axis.

6. The camera lens group according to claim 1 , wherein 1.00<SAG 101 /SAG 102 <7.00,
where SAG 101 is a distance along the optical axis from an intersection of the object-side surface of the tenth lens and the optical axis to a vertex of an effective radius of the object-side surface of the tenth lens, and SAG 102 is a distance along the optical axis from an intersection of the image-side surface of the tenth lens and the optical axis to a vertex of an effective radius of the image-side surface of the tenth lens.

7. The camera lens group according to claim 1 , wherein 2.00<(SAG 71 +SAG 72 )/(SAG 72 −SAG 71 )<6.00,
where SAG 71 is a distance along the optical axis from an intersection of an object-side surface of the seventh lens and the optical axis to a vertex of an effective radius of the object-side surface of the seventh lens, and SAG 72 is a distance along the optical axis from an intersection of an image-side surface of the seventh lens and the optical axis to a vertex of an effective radius of the image-side surface of the seventh lens.

8. The camera lens group according to claim 1 , wherein 2.00<(ET 9 +ET 10 )/(ET 10 −ET 9 )<7.00,
where ET 9 is an edge thickness of the ninth lens, and ET 10 is an edge thickness of the tenth lens.

9. The camera lens group according to claim 1 , wherein 22.00<(DT 101 +DT 102 )/(DT 102 −DT 101 )<31.00,
where DT 101 is a maximum effective radius of the object-side surface of the tenth lens, and DT 102 is a maximum effective radius of the image-side surface of the tenth lens.

10. The camera lens group according to claim 1 , wherein 24.00<f 56 /BFL<40.00,
where f 56 is a combined focal length of the fifth lens and the sixth lens, and BFL is a distance from the image-side surface of the tenth lens to an imaging plane of the camera lens group along the optical axis.

11. The camera lens group according to claim 1 , wherein TTL/ImgH<1.50,
where TTL is a distance along the optical axis from the object-side surface of the first lens to an imaging plane of the camera lens group, and ImgH is half of a diagonal length of an effective pixel area on the imaging plane of the camera lens group.

12. The camera lens group according to claim 1 , wherein Fno≤1.60,
where Fno is an F number of the camera lens group.

13. The camera lens group according to claim 1 , wherein ImgH≥6.00 mm,
where ImgH is half of a diagonal length of an effective pixel area on an imaging plane of the camera lens group.

14. The camera lens group according to claim 1 , wherein an object-side surface of the seventh lens is concave, and an image-side surface of the seventh lens is convex.

15. The camera lens group according to claim 1 , wherein the camera further comprises a stop disposed between the object side and the first lens.

16. The camera lens group according to claim 1 , wherein each of the first to the tenth lenses is aspheric lens.

17. The camera lens group according to claim 1 , wherein half of a maximum field-of-view Semi-FOV of the camera lens group satisfies 35°<Semi-FOV<40°.

18. The camera lens group according to claim 1 , wherein a distance TTL along the optical axis from the object-side surface of the first lens to an imaging plane of the camera lens group satisfies TTL<9 mm.

Assignees

• Zhejiang Sunny Optics Co Ltd

Inventors

• Li Yanping
• He Lingbo
• Dai Fujian
• Zhao Liefeng

Classifications

• G02B13/0045 Primary

  having five or more lenses · CPC title

• G02B9/64

  having more than six components · CPC title

• G02B13/18

  with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration {(G02B13/002 takes precedence)} · CPC title