Camera optical lens

Patent metadata

Field	Value
Publication number	US-11366295-B2
Application number	US-201916679310-A
Country	US
Kind code	B2
Filing date	Nov 11, 2019
Priority date	Dec 27, 2018
Publication date	Jun 21, 2022
Grant date	Jun 21, 2022

Abstract

The present disclosure relates to the field of optical lenses and provides a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens; a second lens having a positive refractive power; a third lens having a negative refractive power; a fourth lens; a fifth lens; and a sixth lens. The camera optical lens satisfies following conditions: −10.00≤f1/f3≤−1.00; 3.00≤R5/R6≤20.00; and 100≤(R3+R4)/(R3−R4). The camera optical lens can achieve a high imaging performance while obtaining a low TTL.

First claim

What is claimed is:

1. A camera optical lens, comprising, from an object side to an image side:
a first lens having a positive refractive power;
a second lens having a positive refractive power;
a third lens having a negative refractive power;
a fourth lens having a positive refractive power;
a fifth lens having a positive refractive power; and
a sixth lens having a negative refractive power,
wherein the camera optical lens satisfies the following conditions:
−5.59≤f1/f3≤−1.08;
3.28≤R5/R6≤19.86; and
338.48≤(R3+R4)/(R3−R4),
where
f1 denotes a focal length of the first lens;
f3 denotes a focal length of the third lens;
R3 denotes a curvature radius of an object side surface of the second lens;
R4 denotes a curvature radius of an image side surface of the second lens;
R5 denotes a curvature radius of an object side surface of the third lens; and
R6 denotes a curvature radius of an image side surface of the third lens.

2. The camera optical lens as described in claim 1 , wherein the first lens comprises an object side surface being convex in a paraxial region and an image side surface being concave in the paraxial region, and
the camera optical lens further satisfies the following conditions:
1.78≤f1/f≤7.02;
−20.99≤(R1+R2)/(R1−R2)≤−4.70; and
0.05≤d1/TTL≤0.18,
where
f denotes a focal length of the camera optical lens;
R1 denotes a curvature radius of the object side surface of the first lens;
R2 denotes a curvature radius of the image side surface of the first lens;
d1 denotes an on-axis thickness of the first lens; and
TTL denotes a total optical length from the object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

3. The camera optical lens as described in claim 2 , further satisfying the following conditions:
2.85≤f1/f≤5.62;
−13.12≤(R1+R2)/(R1−R2)≤−5.87; and
0.09≤d1/TTL≤0.15.

4. The camera optical lens as described in claim 1 , wherein the second lens comprises an object side surface being convex in a paraxial region and an image side surface being concave in the paraxial region, and
the camera optical lens further satisfies the following conditions:
9.51×10 4 ≤f2/f≤8.59×10 6 ; and
0.01≤d3/TTL≤0.02,
where
f denotes a focal length of the camera optical lens;
f2 denotes the focal length of the second lens;
d3 denotes an on-axis thickness of the second lens; and
TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

5. The camera optical lens as described in claim 4 , further satisfying the following conditions:
1.52×10 5 ≤f2/f≤6.87×10 6 .

6. The camera optical lens as described in claim 1 , wherein the third lens comprises an object side surface being convex in a paraxial region and an image side surface being concave in the paraxial region, and
the camera optical lens further satisfies the following conditions:
−7.94≤f3/f≤−2.05;
0.55≤(R5+R6)/(R5−R6)≤2.67; and
0.02≤d5/TTL≤0.05,
where
f denotes a focal length of the camera optical lens;
d5 denotes an on-axis thickness of the third lens; and
TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

7. The camera optical lens as described in claim 6 , further satisfying the following conditions:
−4.96≤f3/f≤−2.57;
0.89≤(R5+R6)/(R5−R6)≤2.14; and
0.02≤d5/TTL≤0.04.

8. The camera optical lens as described in claim 1 , wherein the fourth lens comprises an object side surface being convex in a paraxial region and an image side surface being concave in the paraxial region, and
the camera optical lens further satisfies the following conditions:
1.29≤f4/f≤4.16;
−26.07≤(R7+R8)/(R7−R8)≤−8.58; and
0.01≤d7/TTL≤0.03,
where
f denotes a focal length of the camera optical lens;
f4 denotes a focal length of the fourth lens;
R7 denotes a curvature radius of the object side surface of the fourth lens;
R8 denotes a curvature radius of the image side surface of the fourth lens;
d7 denotes an on-axis thickness of the fourth lens; and
TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

9. The camera optical lens as described in claim 8 , further satisfying the following conditions:
2.07≤f4/f≤3.33;
−16.30≤(R7+R8)/(R7−R8)≤−10.73; and
0.01≤d7/TTL≤0.02.

10. The camera optical lens as described in claim 1 , wherein the fifth lens comprises an object side surface being convex in a paraxial region and an image side surface being convex in the paraxial region, and the camera optical lens further satisfies the following conditions:
0.37≤f5/f≤1.16;
−0.71≤(R9+R10)/(R9−R10)≤−0.12; and
0.07≤d9/TTL≤0.27,
where
f denotes a focal length of the camera optical lens;
f5 denotes a focal length of the fifth lens;
R9 denotes a curvature radius of the object side surface of the fifth lens;
R10 denotes a curvature radius of the image side surface of the fifth lens;
d9 denotes an on-axis thickness of the fifth lens; and
TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

11. The camera optical lens as described in claim 10 , further satisfying the following conditions:
0.59≤f5/f≤0.93;
−0.44≤(R9+R10)/(R9−R10)≤−0.15; and
0.12≤d9/TTL≤0.21.

12. The camera optical lens as described in claim 1 , wherein the sixth lens comprises an object side surface being concave in a paraxial region and an image side surface being concave in the paraxial region, and
the camera optical lens further satisfies the following conditions:
−1.55≤f6/f≤−0.49;
0.05≤(R11+R12)/(R11−R12)≤0.19; and
0.06≤d11/TTL≤0.20,
where
f denotes a focal length of the camera optical lens;
f6 denotes a focal length of the sixth lens;
R11 denotes a curvature radius of the object side surface of the sixth lens;
R12 denotes a curvature radius of the image side surface of the sixth lens;
d11 denotes an on-axis thickness of the sixth lens; and
TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

13. The camera optical lens as described in claim 12 , further satisfying the following conditions:
−0.97≤f6/f≤−0.61;
0.08≤(R11+R12)/(R11−R12)≤0.15; and
0.10≤d11/TTL≤0.16.

14. The camera optical lens as described in claim 1 , further satisfying the following condition:
1.78≤f12/f≤7.00,
where
f denotes a focal length of the camera optical lens; and
f12 denotes a combined focal length of the first lens and the second lens.

15. The camera optical lens as described in claim 14 , further satisfying the following condition:
2.84≤f12/f≤5.60.

16. The camera optical lens as described in claim 1 , wherein a total optical length TTL from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis is smaller than or equal to 5.52 mm.

17. The camera optical lens as described in claim 16 , wherein the total optical length TTL of the camera optical lens is smaller than or equal to 5.27 mm.

18. The camera optical lens as described in claim 1 , wherein an F number of the camera optical lens is smaller than or equal to 2.27.

19. The camera optical lens as described in claim 18 , wherein the F number of the camera optical lens is smaller than or equal to 2.22.

Assignees

• Aac Optics Solutions Pte Ltd

Inventors

• Wang Jianming
• Zhang Lei
• Wang Yanmei
• Ji Yi

Classifications

• G02B13/0045 Primary

  having five or more lenses · CPC title

• G02B9/62

  having six components only · CPC title