Camera optical lens
The present disclosure relates to the technical field of optical lens and discloses a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens, a fifth lens having a positive refractive power, a sixth lens having a positive refractive power, and a seventh lens having a negative refractive power. The camera optical lens satisfies following conditions: 1.70>f6/f≤5.00; −4.00≤R14/R13≤−1.00; −5.00≤f2/f≤−2.00; 1.00≤d8/d9≤2.00. The camera optical lens can achieve excellent optical characteristics with a large aperture, wide-angle, and being ultra-thin.
1. A camera optical lens comprising, from an object side to an image side:
a first lens having a positive refractive power;
a second lens having a negative refractive power;
a third lens having a positive refractive power;
a fourth lens,
a fifth lens having a positive refractive power;
a sixth lens having a positive refractive power; and
a seventh lens having a negative refractive power;
wherein the camera optical lens satisfies following conditions:
1.70≤ f 6 /f≤ 5.00;
−4.00 ≤R 14/ R 13≤−1.00;
−5.00 ≤f 2 /f≤ −2.00; and
1.00 ≤d 8 /d 9≤2.00;
where
f denotes a focal length of the camera optical lens;
f2 denotes a focal length of the second lens;
f6 denotes a focal length of the sixth lens;
R 13 denotes a curvature radius of the object-side surface of the seventh lens;
R 14 denotes a curvature radius of the image-side surface of the seventh lens;
d8 denotes an on-axis distance from the image-side surface of the fourth lens to the object-side surface of the fifth lens; and
d9 denotes an on-axis thickness of the fifth lens.
2. The camera optical lens according to claim 1 further satisfying following conditions:
1.00 ≤d 12 /d 13≤2.00;
where
d12 denotes an on-axis distance from the image-side surface of the sixth lens to the object-side surface of the seventh lens; and
d9 denotes an on-axis thickness of the seventh lens.
3. The camera optical lens according to claim 1 , further satisfying following conditions:
0.45 ≤f 1 /f≤ 1.53;
−4.73≤( R 1+ R 2)/( R 1− R 2)≤−1.27; and
0.06≤ d 1/TTL≤0.18;
where
f1 denotes a focal length of the first lens;
R 1 denotes a curvature radius of the object-side surface of the first lens;
R 2 denotes a curvature radius of the image-side surface of the first lens;
d1 denotes an on-axis thickness of the first lens; and
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 optical axis.
4. The camera optical lens according to claim 1 further satisfying following conditions:
0.57≤( R 3 +R 4)/( R 3 −R 4)≤6.56; and
0.02 ≤d 3/TTL≤0.08;
where
R 3 denotes a curvature radius of the object-side surface of the second lens;
R 4 denotes a curvature radius of the image-side surface of the second lens;
d3 denotes an on-axis thickness of the second lens; and
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 optical axis.
5. The camera optical lens according to claim 1 further satisfies following conditions:
2.89 ≤f 3 /f≤ 11.21;
−5.26≤( R 5 +R 6)/( R 5− R 6)≤0.33; and
where
f3 denotes a focal length of the third lens;
R 5 denotes a curvature radius of the object-side surface of the third lens;
R 6 denotes a curvature radius of the image-side surface of the third lens;
d5 denotes an on-axis thickness of the third lens; and
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 optical axis.
6. The camera optical lens according to claim 1 further satisfies following conditions:
−1118.23 ≤f 4 /f≤ 36.26;
−36.06≤( R 7 +R 8)( R 7 −R 8)≤43.89; and
0.02 ≤d 7/TTL≤0.07;
Where
f4 denotes a focal length of the fourth lens;
R 7 denotes a curvature radius of the object-side surface of the fourth lens;
R 8 denotes a curvature radius of the image-side surface of the fourth lens;
d7 denotes an on-axis thickness of the fourth lens; and
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 optical axis.
7. The camera optical lens according to claim 1 further satisfies following conditions:
0.82 ≤f 5 /f≤ 6.18;
0.61≤( R 9 +R 10)/( R 9 −R 10)≤2.81; and
0.61≤( R 9 +R 10)/( R 9 −R 10)≤2381; and
0.03 ≤d 9/TTL≤0.13;
where
f5 denotes a focal length of the fifth lens;
R 9 denotes a curvature radius of the object-side surface of the fifth lens;
R 10 denotes a curvature radius of the image-side surface of the fifth lens; and
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 optical axis.
8. The camera optical lens according to claim 1 further satisfies following conditions:
−11.68≤( R 11 +R 12)/( R 11 −R 12)≤−1.04; and
0.02 ≤d 11/TTL≤0.13;
where
R 11 denotes a curvature radius of the object-side surface of the sixth lens
R 12 denotes a curvature radius of the image-side surface of the sixth lens;
d11 denotes an on-axis thickness of the sixth lens; and
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 optical axis.
9. The camera optical lens according to claim 1 further satisfies following conditions:
−1.45 ≤f 7 /f≤− 0.41;
−1.18≤( R 13 +R 14)/( R 13 −R 14)≤−0.02; and
0.04 ≤d 13/TTL≤0.15;
where
f7 denotes a focal length of the seventh lens;
d13 denotes an on-axis thickness of the seventh lens; and
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 optical axis.
10. The camera optical lens according to claim 1 , wherein a combined focal length of the first lens and of the second lens is defined as f12, and the camera optical lens further satisfies a condition of 0.60≤f12/f≤2.06.