Camera optical lens
Disclosed is a camera optical lens, including nine lenses, and the nine lenses from an object side to an image side are: a first lens with a negative refractive power, a second lens with a positive refractive power, a third lens with a negative refractive power, a fourth lens with a positive refractive power, a fifth lens with a positive refractive power, a sixth lens with a positive refractive power, a seventh lens with a negative refractive power, an eighth lens with a positive refractive power and an ninth lens with a negative refractive power. The camera optical lens satisfies: −5.00≤f1/f≤−2.00; 2.50≤d13/d14≤10.00. The camera optical lens has good optical performance, and meets the design requirements of a large aperture, wide-angle and ultra-thin.
1. A camera optical lens, comprising nine lenses, the nine lenses from an object side to an image side being:
a first lens with a negative refractive power;
a second lens with a positive refractive power;
a third lens with a negative refractive power;
a fourth lens with a positive refractive power;
a fifth lens;
a sixth lens with a positive refractive power;
a seventh lens with a negative refractive power;
an eighth lens with a positive refractive power; and
an ninth lens with a negative refractive power;
wherein the camera optical lens satisfies following conditions:
−5.00≤ f 1/ f≤− 2.00; 2.50≤ d 13/ d 14≤10.00; 2.50 ≤R 11/ R 12≤6.50;
where
f denotes a focal length of the camera optical lens;
f1 denotes a focal length of the first lens;
d13 denotes an on-axis thickness of the seventh lens;
d14 denotes an on-axis distance from an image-side surface of the seventh lens to an object-side surface of the eighth lens;
R11 denotes a central curvature radius of an object-side surface of the sixth lens;
R12 denotes a central curvature radius of an image-side surface of the sixth lens.
2. The camera optical lens according to claim 1 , further satisfying following conditions:
2.49≤( R 1+ R 2)/( R 1− R 2)≤15.47; 0.02≤ d 1/ TTL≤ 0.06;
where
R1 denotes a central curvature radius of an object-side surface of the first lens;
R2 denotes a central curvature radius of an image-side surface of the first lens;
d1 denotes an on-axis thickness of the first lens;
TTL denotes a total track length of the camera optical lens.
3. The camera optical lens according to claim 1 , further satisfying following conditions:
0.35≤ f 2/ f≤ 1.13; −2.32≤( R 3+ R 4)/( R 3− R 4)≤−0.76; 0.05≤ d 3/ TTL≤ 0.16;
where
f2 denotes a focal length of the second lens;
R3 denotes a central curvature radius of an object-side surface of the second lens;
R4 denotes a central curvature radius of an image-side surface of the second lens;
d3 denotes an on-axis thickness of the second lens;
TTL denotes a total track length of the camera optical lens.
4. The camera optical lens according to claim 1 , further satisfying following conditions:
−3.29≤ f 3/ f≤− 1.04; 1.57≤( R 5+ R 6)/( R 5− R 6)≤5.06; 0.02≤ d 5/ TTL≤ 0.09;
where
f3 denotes a focal length of the third lens;
R5 denotes a central curvature radius of an object-side surface of the third lens;
R6 denotes a central curvature radius of an image-side surface of the third lens;
d5 denotes an on-axis thickness of the third lens;
TTL denotes a total track length of the camera optical lens.
5. The camera optical lens according to claim 1 , further satisfying following conditions:
0.88≤ f 4/ f≤ 2.87; −1.49≤( R 7+ R 8)/( R 7− R 8)≤−0.45; 0.04≤ d 7/ TTL≤ 0.14;
where
f4 denotes a focal length of the fourth lens;
R7 denotes a central curvature radius of an object-side surface of the fourth lens;
R8 denotes a central curvature radius of an image-side surface of the fourth lens;
d7 denotes an on-axis thickness of the fourth lens;
TTL denotes a total track length of the camera optical lens.
6. The camera optical lens according to claim 1 , further satisfying following conditions:
−163.02≤ f 5/ f≤ 664.49; −54.65≤( R 9+ R 10)/( R 9− R 10)≤622.16; 0.02≤ d 9/ TTL≤ 0.08;
where
f5 denotes a focal length of the fifth lens;
R9 denotes a central curvature radius of an object-side surface of the fifth lens;
R10 denotes a central curvature radius of an image-side surface of the fifth lens;
d9 denotes an on-axis thickness of the fifth lens;
TTL denotes a total track length of the camera optical lens.
7. The camera optical lens according to claim 1 , further satisfying following conditions:
3.18≤ f 6/ f≤ 11.86; 0.69≤( R 11+ R 12)/( R 11− R 12)≤3.03; 0.03≤ d 11/ TTL≤ 0.10;
where
f6 denotes a focal length of the sixth lens;
d11 denotes an on-axis thickness of the sixth lens;
TTL denotes a total track length of the camera optical lens.
8. The camera optical lens according to claim 1 , further satisfying following conditions:
−10.88≤ f 7/ f≤− 3.51; −15.70≤( R 13+ R 14)/( R 13− R 14)≤−4.97; 0.02≤ d 13/ TTL≤ 0.10;
where
f7 denotes a focal length of the seventh lens;
R13 denotes a central curvature radius of an object-side surface of the seventh lens;
R14 denotes a central curvature radius of the image-side surface of the seventh lens;
TTL denotes a total track length of the camera optical lens.
9. The camera optical lens according to claim 1 , further satisfying following conditions:
1.05≤ f 8/ f≤ 3.63; −7.36≤( R 15+ R 16)/( R 15− R 16)≤−2.36; 0.06≤ d 15/ TTL≤ 0.19;
where
f8 denotes a focal length of the eighth lens;
R15 denotes a central curvature radius of the object-side surface of the eighth lens;
R16 denotes a central curvature radius of an image-side surface of the eighth lens;
d15 denotes an on-axis thickness of the eighth lens;
TTL denotes a total track length of the camera optical lens.
10. The camera optical lens according to claim 1 , further satisfying following conditions:
−2.28≤ f 9/ f≤− 0.70; 0.77≤( R 17+ R 18)/( R 17− R 18)≤2.90; 0.04≤ d 17/ TTL≤ 0.13;
where
f9 denotes a focal length of the ninth lens;
R17 denotes a central curvature radius of an object-side surface of the ninth lens;
R18 denotes a central curvature radius of an image-side surface of the ninth lens;
d17 denotes an on-axis thickness of the ninth lens;
TTL denotes a total track length of the camera optical lens.