Camera optical lens

Patent metadata

Field	Value
Publication number	US-10739563-B2
Application number	US-201816039500-A
Country	US
Kind code	B2
Filing date	Jul 19, 2018
Priority date	Mar 13, 2018
Publication date	Aug 11, 2020
Grant date	Aug 11, 2020

Abstract

The present disclosure relates to the field of optical lenses and provides a camera optical lens includes, 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; the camera optical lens satisfies following conditions: 0.5≤f1/f≤10, 1.7≤n3≤2.2, and 0.01≤d5/TTL≤0.2, Fno≤2.06; where f denotes a focal length of the camera optical lens; f1 denotes a focal length of the first lens; n3 denotes a refractive index of the third lens, and d5 denotes a thickness on-axis of the third lens, Fno denotes an aperture F number of the camera optical lens, TTL denotes a total optical length of the camera optical lens. The present disclosure can achieve high optical performance while achieving ultra-thin, wide-angle lenses having a big aperture.

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, and a sixth lens; wherein the camera optical lens further satisfies the following conditions:
0.5≤ f 1/ f≤ 10;

1.7≤ n 3≤2.2;

0.01≤ d 5/ TTL≤ 0.2;

Fno≤ 2.06;
where
f: the focal length of the camera optical lens;
f1: the focal length of the first lens;
n3: the refractive index of the third lens;
d5: the thickness on-axis of the third lens;
Fno: the aperture F number of the camera optical lens;
TTL: the total optical length of the camera optical lens.

2. The camera optical lens as described in claim 1 , wherein the first lens is made of plastic material, the second lens is made of plastic material, the third lens is made of glass 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.

3. The camera optical lens as described in claim 1 further satisfying the following conditions:
1.545≤ f 1/ f≤ 8.625;

1.704≤ n 3≤2.148;

0.024≤ d 5/ TTL≤ 0.132.

4. The camera optical lens as described in claim 1 , wherein first lens has a positive refractive power with a convex object side surface and a concave image side surface;
the camera optical lens further satisfies the following conditions:
−87.66≤( R 1+ R 2)/( R 1− R 2)≤− 6 . 62 ;

0.13 mm≤ d 1≤0.59 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.

5. The camera optical lens as described in claim 4 further satisfying the following conditions:
−54.79≤( R 1+ R 2)/( R 1− R 2)≤−8.28;

0.20 mm≤ d 1≤0.47 mm.

6. The camera optical lens as described in claim 1 , wherein the second lens has a positive refractive power with a convex object side surface and a concave image side surface; the camera optical lens further satisfies the following conditions:
0.73≤ f 2/ f≤ 3.08;

−5.45≤( R 3+ R 4)/( R 3− R 4)≤−1.44;

0.20 mm≤ d 3≤0.70 mm; where

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

7. The camera optical lens as described in claim 6 further satisfying the following conditions:
1.16≤ f 2/ f≤ 2.47;

−3.41≤( R 3+ R 4)/( R 3− R 4)≤−1.80;

0.32 mm≤ d 3≤0.56 mm.

8. The camera optical lens as described in claim 1 , wherein the third lens has a positive refractive power; the camera optical lens further satisfies the following conditions:
0.10 mm≤ d 5≤0.52 mm; where

d5: the thickness on-axis of the third lens.

9. The camera optical lens as described in claim 8 further satisfying the following conditions:
0.16 mm≤ d 5≤0.42 mm.

10. The camera optical lens as described in claim 1 , wherein the fourth lens has a positive refractive power with a concave object side surface and a convex image side surface; the camera optical lens further satisfies the following conditions:
0.60≤ f 4/ f≤ 1.84;

1.55≤( R 7+ R 8)/( R 7− R 8)≤4.77;

0.28 mm≤ d 7≤0.87 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.

11. The camera optical lens as described in claim 10 further satisfying the following conditions:
0.97≤ f 4/ f≤ 1.47;

2.48≤( R 7+ R 8)/( R 7− R 8)≤3.82;

12. The camera optical lens as described in claim 1 , wherein the fifth lens has a negative refractive power with a concave object side surface and a convex image side surface; the camera optical lens further satisfies the following conditions:
−1.94≤ f 5/ f≤− 0.61;

−3.18≤( R 9+ R 10)/( R 9− R 10)≤−1.01;

0.12 mm≤ d 9≤0.41 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.

13. The camera optical lens as described in claim 12 further satisfying the following conditions:
−1.21≤ f 5/ f≤− 0.76;

−1.99≤( R 9+ R 10)/( R 9− R 10)≤−1.26;

14. The camera optical lens as described in claim 1 , wherein the sixth lens has a positive refractive power with a convex object side surface and a concave image side surface; the camera optical lens further satisfies the following conditions:
0.86≤ f 6/ f≤ 3.35;

−34.77≤( R 11+ R 12)/( R 11− R 12)≤−8.28;

0.52 mm≤ d 11≤1.80 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.

15. The camera optical lens as described in claim 14 further satisfying the following conditions:
1.38≤ f 6/ f≤ 2.68;

−21.73≤( R 11+ R 12)/( R 11− R 12)≤−10.34;

16. The camera optical lens as described in claim 1 further satisfying the following condition:
0.595 f 12/ f 51.90; where
f12: the combined focal length of the first lens and the second lens;
f: the focal length of the camera optical lens.

17. The camera optical lens as described in claim 16 further satisfying the following conditions:
0.94≤ f 12/ f≤ 1.52.

18. The camera optical lens as described in claim 1 , wherein the total optical length TTL of the camera optical lens is less than or equal to 6.06 mm.

19. The camera optical lens as described in claim 18 , wherein the total optical length TTL of the camera optical lens is less than or equal to 5.78 mm.

20. The camera optical lens as described in claim 1 , wherein the aperture F number of the camera optical lens is less than or equal to 2.02.

Assignees

• Aac Technologies Pte Ltd
• Aac Optics Solutions Pte Ltd

Inventors

• Fang Chunhuan
• Zhang Lei
• Wang Yanmei
• Ji Yi

Classifications

• G02B9/62

  having six components only · CPC title

• G02B13/0045 Primary

  having five or more lenses · CPC title