Camera optical lens

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; the second lens has a positive refractive power, and the third lens has a negative refractive power;

wherein the camera optical lens satisfies the following conditions:

5.00≤ f 1/ f≤ 10.00;

13.00≤ R 3/ d 3;

where

f denotes a focal length of the camera optical lens;

f1 denotes a focal length of the first lens;

R3 denotes a curvature radius of an object-side surface of the second lens;

d3 denotes an on-axis thickness of the second lens.

2. The camera optical lens according to claim 1 , further satisfying the following conditions:

5.02≤ f 1/ f≤ 9.45.

3. The camera optical lens according to claim 1 , wherein the first lens has a positive refractive power, and 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;

wherein the camera optical lens satisfies the following conditions:

−52.20≤( R 1+ R 2)/( R 1− R 2)≤−8.58;

0.04≤ d 1/ TTL≤ 0.12;

where

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;

TTL denotes a total optical length from the object-side surface of the first lens to an image surface of the camera optical lens along an optic axis.

4. The camera optical lens according to claim 3 , wherein the camera optical lens satisfies the following conditions:

−32.62≤( R 1+ R 2)/( R 1− R 2)≤−10.73;

0.06≤ d 1/ TTL≤ 0.09.

5. The camera optical lens according to claim 1 , wherein the object-side surface of the second lens is convex in a paraxial region and an image-side surface of the second lens is convex in the paraxial region;

wherein the camera optical lens satisfies the following conditions:

0.46≤ f 2/ f≤ 2.42;

0.19≤( R 3+ R 4)/( R 3− R 4)≤1.50;

0.02≤ d 3/ TTL≤ 0.14;

where

f2 denotes a focal length of the second lens;

R4 denotes a curvature radius of the image-side surface of the second lens;

TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optic axis.

6. The camera optical lens according to claim 5 , further satisfying the following conditions:

0.73≤ f 2/ f≤ 1.93;

0.30≤( R 3+ R 4)/( R 3− R 4)≤1.20;

0.03≤ d 3/ TTL≤ 0.11.

7. The camera optical lens according to 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

wherein the camera optical lens satisfies the following conditions:

−9.31≤ f 3/ f≤− 1.17;

2.13≤( R 5+ R 6)/( R 5− R 6)≤13.85;

0.03≤ d 5/ TTL≤ 0.09;

where

f3 denotes a focal length of the third lens;

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;

TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optic axis.

8. The camera optical lens according to claim 7 , further satisfying the following conditions:

−5.82≤ f 3/ f≤− 1.47;

3.41≤( R 5+ R 6)/( R 5− R 6)≤11.08;

0.05≤ d 5/ TTL≤ 0.07.

9. The camera optical lens according to claim 1 , wherein the fourth lens has a negative refraction power and the fourth lens comprises an image-side surface being concave in a paraxial region;

wherein and the camera optical lens satisfies the following conditions:

−19.47≤ f 4/ f≤− 2.82;

−0.38≤( R 7+ R 8)/( R 7− R 8)≤17.45;

0.02≤ d 7/ TTL≤ 0.08;

where

f4 denotes a focal length of the fourth lens;

R7 denotes a curvature radius of an 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;

TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optic axis.

10. The camera optical lens according to claim 9 , further satisfying the following conditions:

−12.17≤ f 4/ f≤− 3.53;

−0.24≤( R 7+ R 8)/( R 7− R 8)≤13.96;

0.03≤ d 7/ TTL≤ 0.06.

11. The camera optical lens according to claim 1 , wherein the fifth lens has a positive refraction power, and the fifth lens comprises an object-side surface being concave in a paraxial region and an image-side surface being convex in the paraxial region;

wherein the camera optical lens satisfies the following conditions:

0.38≤ f 5/ f≤ 1.23;

0.74≤( R 9+ R 10)/( R 9− R 10)≤2.30;

0.06≤ d 9/ TTL≤ 0.20;

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;

TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optic axis.

12. The camera optical lens according to claim 11 , further satisfying the following conditions:

0.61≤ f 5/ f≤ 0.99;

1.18≤( R 9+ R 10)/( R 9− R 10)≤1.84;

0.10≤ d 9/ TTL≤ 0.16.

13. The camera optical lens according to claim 1 , wherein the sixth lens has a negative refraction power and the sixth lens comprises an image-side surface being concave in a paraxial region;

wherein the camera optical lens satisfies the following conditions:

−2.04≤ f 6/ f≤− 0.51;

0.46≤( R 11+ R 12)/( R 11− R 12)≤2.72;

0.04≤ d 11/ TTL≤ 0.13;

where

f6 denotes a focal length of the sixth lens;

R11 denotes a curvature radius of an 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;

TTL denotes a total optical length from an object-side surface of the first lens to an image surface Si of the camera optical lens along an optic axis.

14. The camera optical lens according to claim 13 , further satisfying the following conditions:

−1.27≤ f 6/ f≤− 0.64;

0.73≤( R 11+ R 12)/( R 11− R 12)≤2.18;

0.07≤ d 11/ TTL≤ 0.11.

15. The camera optical lens according to claim 1 , wherein the first lens and the second lens has a combined focal length of f12, and the camera optical lens satisfies the following conditions:

0.42≤ f 12/ f≤ 2.17.

16. The camera optical lens according to claim 15 , further satisfying the following condition:

0.67≤ f 12/ f≤ 1.73.

17. The camera optical lens according to claim 1 , wherein a total optical length TTL of the camera optical lens is less than or equal to 5.28 mm.

18. The camera optical lens according to claim 17 , wherein the total optical length TTL of the camera optical lens is less than or equal to 5.04 mm.

19. The camera optical lens according to claim 1 , wherein an F number of the camera optical lens is less than or equal to 2.37.

20. The camera optical lens according to claim 19 , wherein the F number of the camera optical lens is less than or equal to 2.32.