Camera optical lens

Patent metadata

Field	Value
Publication number	US-10641992-B2
Application number	US-201815871155-A
Country	US
Kind code	B2
Filing date	Jan 15, 2018
Priority date	Dec 18, 2017
Publication date	May 5, 2020
Grant date	May 5, 2020

Abstract

The present disclosure relates to optical lens, in particular to a camera optical lens. The camera optical lens includes, in an order from an object side to an image side, 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 is made of plastic material, the second lens is made of glass material, the third lens is made of plastic material, the fourth lens is made of glass material, the fifth lens is made of plastic material, the sixth lens is made of plastic material, and the seventh lens is made of plastic material. The camera optical lens satisfies the following conditions: 1≤f1/f≤1.5; 1.7≤n2≤2.2; −2≤f3/f4≤2; 0.5≤(R13+R14)/(R13−R14)≤10; and 1.7≤n4≤2.2. The camera optical lens can obtain high imaging performance and a low TTL (Total Track Length).

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;
Wherein the first lens is made of plastic material, the second lens is made of glass material, the third lens is made of plastic material, the fourth lens is made of glass material, the fifth lens is made of plastic material, the sixth lens is made of plastic material, and the seventh lens is made of plastic material;
wherein the camera optical lens further satisfies the following conditions:
1≤ f 1/ f≤ 1.5;

1.7≤ n 2≤2.2

6.36≤( R 3+ R 4)/( R 3− R 4)≤12.37;

−2≤ f 3/ f 4≤2;

−13.30≤ f 3/ f≤− 2.47;

−5.12≤( R 5+ R 6)/( R 5− R 6)≤2.27;

0.16 mm≤ d 5≤0.71 mm;

0.5≤( R 13+ R 14)/( R 13− R 14)≤10;

1.7≤ n 4≤2.2;

where
f: the focal length of the camera optical lens;
f1: the focal length of the first lens;
f3: the focal length of the third lens;
f4: the focal length of the fourth lens;
n2: the refractive index of the second lens;
n4: the refractive index of the fourth lens;
R3: the curvature radius of the object side surface of the second lens;
R4: the curvature radius of the image side surface of the second lens;
R5: the curvature radius of the object side surface of the third lens;
R6: the curvature radius of the image side surface of the third lens;
d5: the thickness on-axis of the third lens;
R13: the curvature radius of object side surface of the seventh lens;
R14: the curvature radius of image side surface of the seventh lens.

2. The camera optical lens according to claim 1 further satisfying the following conditions:
1.08≤ f 1/ f≤ 1.46;

1.71≤ n 2≤2.08;

−1.77≤ f 3/ f 4≤0.55;

0.55≤( R 13+ R 14)/( R 13− R 14)≤5.47;

1.72≤ n 4≤2.01.

3. The camera optical lens according to claim 1 , wherein the first lens has a positive refractive power with a convex object side surface and a concave image side surface relative to a proximal axis; the camera optical lens further satisfies the following conditions:
−4.72≤( R 1+ R 2)/( R 1− R 2)≤−1.30; and,

0.27 mm≤ d 1≤0.90 mm; where

R1: the curvature radius of object side surface of the first lens;
R2: the curvature radius of image side surface of the first lens;
d1: the thickness on-axis of the first lens.

4. The camera optical lens according to claim 3 further satisfying the following conditions:
−2.95≤( R 1+ R 2)/( R 1− R 2)≤−1.62; and,

0.44 mm≤ d 1≤0.72 mm.

5. The camera optical lens according to claim 1 , wherein the second lens has a negative refractive power with a convex object side surface and a concave image side surface relative to a proximal axis; the camera optical lens further satisfies the following conditions:
−21.45≤ f 2/ f≤− 2.40;

0.13 mm≤ d 3≤0.56 mm; where

f: the focal length of the camera optical lens;
f2: the focal length of the second lens;
d3: the thickness on-axis of the second lens.

6. The camera optical lens according to claim 5 further satisfying the following condition:
−13.41≤ f 2/ f≤− 3.0;

0.20 mm≤ d 3≤0.45 mm.

7. The camera optical lens according to claim 6 further satisfying the following conditions:
−8.31≤ f 3/ f≤− 3.09;

−3.20≤( R 5+ R 6)/( R 5− R 6)≤1.82; and,

0.26 mm≤ d 5≤0.57 mm.

8. The camera optical lens according to claim 1 , wherein the fourth lens has a positive refractive power with a convex object side surface and a concave image side surface relative to a proximal axis; the camera optical lens further satisfies the following conditions:
1.54≤ f 4/ f≤ 7.03;

−116.54≤( R 7+ R 8)/( R 7− R 8)≤6.48; and,

0.10 mm≤ d 7≤0.49 mm; where

f: the focal length of the camera optical lens;
f4: the focal length of the fourth lens;
R7: the curvature radius of the object side surface of the fourth lens;
R8: the curvature radius of the image side surface of the fourth lens;
d7: the thickness on-axis of the fourth lens.

9. The camera optical lens according to claim 8 further satisfying the following conditions:
2.46≤ f 4/ f≤ 5.62;

−72.84≤( R 7+ R 8)/( R 7− R 8)≤5.19; and,

0.16 mm≤ d 7≤0.39 mm.

10. The camera optical lens according to claim 1 , wherein the fifth lens has a positive refractive power with a concave object side surface and a convex image side surface relative to a proximal axis; the camera optical lens further satisfies the following conditions:
0.32≤ f 5/ f≤ 1.02;

0.66≤( R 9+ R 10)/( R 9− R 10)≤3.65; and,

0.42 mm≤ d 9≤1.32 mm; where

f: the focal length of the camera optical lens;
f5: the focal length of the fifth lens;
R9: the curvature radius of the object side surface of the fifth lens;
R10: the curvature radius of the image side surface of the fifth lens;
d9: the thickness on-axis of the fifth lens.

11. The camera optical lens according to claim 10 further satisfying the following conditions:
0.52≤ f 3/ f≤ 0.82;

1.05≤( R 9+ R 10)/( R 9− R 10)≤2.92; and,

0.67 mm≤ d 9≤1.06 mm.

12. The camera optical lens according to claim 1 , wherein the sixth lens has a negative refractive power with a concave image side surface relative to a proximal axis; the camera optical lens further satisfies the following conditions:
−7.35≤ f 6/ f≤− 1.30;

0.20≤( R 11+ R 12)/( R 11− R 12)≤3.44; and,

0.20 mm≤ d 11≤0.67 mm; where

f: the focal length of the camera optical lens;
f6: the focal length of the sixth lens;
R11: the curvature radius of the object side surface of the sixth lens;
R12: the curvature radius of the image side surface of the sixth lens;
d11: the thickness on-axis of the sixth lens.

13. The camera optical lens according to claim 12 further satisfying the following conditions:
−4.59≤ f 6/ f≤− 1.62;

0.32≤( R 11+ R 12)/( R 11− R 12)≤2.76; and,

0.32 mm≤ d 11≤0.54 mm.

14. The camera optical lens according to claim 1 , wherein the seventh lens has a negative refractive power with a concave object side surface and a concave image side surface relative to a proximal axis; the camera optical lens further satisfies the following conditions:
−1.76≤ f 7/ f≤− 0.46; and,

0.15 mm≤ d 13≤0.52 mm; where

f: the focal length of the camera optical lens;
f7: the focal length of the seventh lens;
d13: the thickness on-axis of the seventh lens.

15. The camera optical lens according to claim 14 further satisfying the following conditions:
−1.10≤ f 7/ f≤− 0.58; and,

0.24 mm≤ d 13≤0.42 mm.

16. The camera optical lens according to claim 1 , wherein the total optical length TTL of the camera optical lens is less than or equal to 5.60 mm; where
TTL: the total optical length from the object side surface of the first lens to the image surface.

17. The camera optical lens according to claim 16 , wherein the total optical length TTL of the camera optical lens is less than or equal to 5.35 mm.

18. The camera optical lens according to claim 1 , wherein the aperture F number of the camera optical lens is less than or equal to 1.83.

19. The camera optical lens according to claim 18 , wherein the aperture F number of the camera optical lens is less than or equal to 1.80.

Assignees

• Aac Technologies Pte Ltd

Inventors

• Chen Chenxiyang
• Zhang Lei
• Wang Yanmei
• Ji Yi

Classifications

• G02B9/64

  having more than six components · CPC title

• G02B13/0045 Primary

  having five or more lenses · CPC title

• G02B1/041

  Lenses · CPC title