Camera optical lens

Patent metadata

Field	Value
Publication number	US-11467375-B2
Application number	US-201916675252-A
Country	US
Kind code	B2
Filing date	Nov 6, 2019
Priority date	Dec 27, 2018
Publication date	Oct 11, 2022
Grant date	Oct 11, 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 made of a glass material; a second lens made of a glass material; a third lens made of a plastic material; a fourth lens made of a plastic material; a fifth lens made of a plastic material; a sixth lens made of a plastic material; and a seventh lens made of a plastic material. The camera optical lens satisfies following conditions: 1.00≤f1/f≤1.50; 1.70≤n1≤2.20; −2.00≤f3/f4≤2.00; 0.50≤(R13+R14)/(R13−R14)≤10.00; and 1.70≤n2≤2.20. 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 in sequence: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, the first lens has a positive refractive power, and comprises an object side surface being convex in a paraxial region and an image side surface being concave in the paraxial region, wherein the camera optical lens satisfies following conditions:
1.00≤ f 1/ f≤ 1.50;

1.70≤ n 1≤2.20;

−2.00≤ f 3/ f 4≤2.00;

0.50≤( R 13+ R 14)/( R 13− R 14)≤10.00;

−9.09≤( R 1+ R 2)/( R 1− R 2)≤−2.68;

0.05≤ d 1/ TTL≤ 0.19, and

1.70≤n2≤2.20,

where
f denotes a focal length of the camera optical lens;
f1 denotes a focal length of the first lens;
f3 denotes a focal length of the third lens;
f4 denotes a focal length of the fourth lens;
n1 denotes a refractive index of the first lens;
n2 denotes a refractive index of the second lens;
d1 denotes an on-axis thickness of the first lens;
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;
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;
R13 denotes a curvature radius of an object side surface of the seventh lens; and
R14 denotes a curvature radius of an image side surface of the seventh lens.

2. The camera optical lens as described in claim 1 , wherein the first lens is made of glass material, the second lens is made of glass material, the third lens is made of plastic material, the fourth lens is made of plastic material, the fifth lens is made of plastic material, the sixth lens is made of plastic material and the seventh lens made of a plastic material.

3. The camera optical lens as described in claim 1 , further satisfying following conditions:
1.05≤ f 1/ f≤ 1.45;

1.71≤ n 1≤2.10;

−1.85≤ f 3/ f 4≤1.50;

1.75≤( R 13+ R 14)/( R 13− R 14)≤8.50; and

1.72≤ n 2≤2.15.

4. The camera optical lens as described in claim 1 , further satisfying following conditions:
5.68≤( R 1+ R 2)/( R 1− R 2)≤−3.34; and

0.08≤ d 1/ TTL≤ 0.15.

5. The camera optical lens as described in claim 1 , wherein the second lens has a negative refractive power, and 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 following conditions:
−141.74≤ f 2/ f≤− 5.14;

7.91≤( R 3+ R 4)/( R 3− R 4)≤48.75; and

0.01≤ d 3/ TTL≤ 0.08,

where
f2 denotes a focal length of the second lens;
R3 denotes a curvature radius of the object side surface of the second lens;
R4 denotes a curvature radius of the image side surface of the second lens;
d3 denotes an on-axis thickness of the second lens.

6. The camera optical lens as described in claim 5 , further satisfying following conditions:
−88.59≤ f 2/ f≤− 6.42;

12.65≤( R 3+ R 4)/( R 3− R 4)≤39.00; and

0.02≤ d 3/ TTL≤ 0.06.

7. The camera optical lens as described in claim 1 , wherein the third lens has a negative refractive power, and 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 following conditions:
−11.15≤ f 3/ f≤− 2.09;

0.87≤( R 5+ R 6)/( R 5− R 6)≤3.91; and

0.03≤ d 5/ TTL≤ 0.08,

where
R5 denotes a curvature radius of the object side surface of the third lens;
R6 denotes a curvature radius of the image side surface of the third lens;
d5 denotes an on-axis thickness of the third lens.

8. The camera optical lens as described in claim 7 , further satisfying following conditions:
−6.97≤ f 3/ f≤− 2.61;

1.39≤( R 5+ R 6)/( R 5− R 6)≤3.12; and

0.04≤ d 5/ TTL≤ 0.07.

9. 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 the camera optical lens further satisfies following conditions:
−11.15≤ f 4/ f≤ 4.19;

−0.22≤( R 7+ R 8)/( R 7− R 8)≤2.38; and

0.05≤ d 7/ TTL≤ 0.21,

where
R7 denotes a curvature radius of the object side surface of the fourth lens;
R8 denotes a curvature radius of an image side surface of the fourth lens;
d7 denotes an on-axis thickness of the fourth lens.

10. The camera optical lens as described in claim 9 , further satisfying following conditions:
−6.97≤ f 4/ f≤ 3.35;

−0.14≤( R 7+ R 8)/( R 7− R 8)≤1.90; and

0.09≤ d 7/ TTL≤ 0.17.

11. The camera optical lens as described in claim 1 , wherein the fifth lens has a negative refractive power, and 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 following conditions:
−8.27≤ f 5/ f≤− 1.35;

1.67≤( R 9+ R 10)/( R 9− R 10)≤9.15; and

0.02≤ d 9/ TTL≤ 0.08,

where
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.

12. The camera optical lens as described in claim 11 , further satisfying following conditions:
−5.17≤ f 5/ f≤− 1.69;

2.67≤( R 9+ R 10)/( R 9− R 10)≤7.32; and

0.04≤ d 9/ TTL≤ 0.07.

13. The camera optical lens as described in claim 1 , wherein the sixth lens has a positive refractive power, and 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 following conditions:
0.48≤ f 6/ f≤ 2.03;

−4.22≤( R 11+ R 12)/( R 11− R 12)≤−0.97; and

0.03≤ d 11/ TTL≤ 0.12,

where
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.

14. The camera optical lens as described in claim 13 , further satisfying following conditions:
0.77≤ f 6/ f≤ 1.63;

−2.63≤( R 11+ R 12)/( R 11− R 12)≤−1.21; and

0.06≤ d 11/ TTL≤ 0.10.

15. The camera optical lens as described in claim 1 , wherein the seventh lens has a negative refractive power, the object side surface of the seventh lens is convex in a paraxial region, and the image side surface of the seventh lens is concave in the paraxial region, and the camera optical lens further satisfies following conditions:
−10.05≤ f 7/ f≤− 1.33; and

0.06≤ d 13/ TTL≤ 0.22,

where
f7 denotes a focal length of the seventh lens;
d13 denotes an on-axis thickness of the seventh lens.

16. The camera optical lens as described in claim 15 , further satisfying following conditions:
−6.28≤ f 7/ f≤− 1.67; and

0.10≤ d 13/ TTL≤ 0.17.

17. The camera optical lens as described in claim 1 , wherein the total optical length TTL of the camera optical lens is smaller than or equal to 6.93 mm.

18. The camera optical lens as described in claim 17 , wherein the total optical length TTL of the camera optical lens is smaller than or equal to 6.62 mm.

19. The camera optical lens as described in claim 1 , wherein an F number of the camera optical lens is smaller than or equal to 1.60.

Assignees

• Aac Optics Solutions Pte Ltd

Inventors

• Zhao Xiaonan
• Zhang Lei
• Wang Yanmei
• Zhang Yang

Classifications

• G02B27/005

  for correction of secondary colour or higher-order chromatic aberrations · CPC title

• G02B1/041

  Lenses · CPC title

• G02B9/64 Primary

  having more than six components · CPC title

• G02B13/0045 Primary

  having five or more lenses · CPC title