Camera optical lens

Patent metadata

Field	Value
Publication number	US-11567301-B2
Application number	US-202016914360-A
Country	US
Kind code	B2
Filing date	Jun 27, 2020
Priority date	Dec 13, 2019
Publication date	Jan 31, 2023
Grant date	Jan 31, 2023

Abstract

The present invention relates to the field of optical lenses and provides a camera optical lens sequentially including, 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 negative refractive power; a fourth lens; a fifth lens; a sixth lens having a positive refractive power; and a seventh lens having a negative refractive power. The camera optical lens satisfies following conditions: 2.80≤v1/v2≤4.50; and −10.00≤f3/f≤−3.00, where f denotes a focal length of the camera optical lens; f3 denotes a focal length of the third lens; and v1 and v2 denote abbe numbers of the first and second lenses, respectively. The camera optical lens according to the present invention can achieve high optical performance while satisfying design requirements for ultra-thin, wide-angle lenses having large apertures.

First claim

What is claimed is:

1. A camera optical lens, sequentially 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 negative refractive power; a fourth lens; a fifth lens; 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:
2.80≤ v 1/ v 2≤4.50;

−10.00≤ f 3/ f≤− 3.00; and

−1.00≤ f 7/ f≤− 0.50,

where
f denotes a focal length of the camera optical lens;
f3 denotes a focal length of the third lens;
v1 denotes an abbe number of the first lens;
v2 denotes an abbe number of the second lens; and
f7 denotes a focal length of the seventh lens.

2. The camera optical lens as described in claim 1 , further satisfying a following condition:
( R 9+ R 10)/( R 9− R 10)≥5.00,

where
R9 denotes a curvature radius of an object side surface of the fifth lens; and
R10 denotes a curvature radius of an image side surface of the fifth lens.

3. The camera optical lens as described in claim 1 , further satisfying following conditions:
0.52≤ f 1/ f≤ 1.66;

−4.08≤( R 1+ R 2)/( R 1− R 2)≤−1.28; and

0.08≤ d 1/ TTL≤ 0.24,

where
f1 denotes a focal length of the first lens;
R1 denotes a curvature radius of an object side surface of the first lens;
R2 denotes a curvature radius of an 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 plane of the camera optical lens along an optic axis.

4. The camera optical lens as described in claim 1 , further satisfying following conditions:
−14.13≤ f 2/ f≤− 4.10;

3.40≤( R 3+ R 4)/( R 3− R 4)≤15.14; and

0.02≤ d 3/ TTL≤ 0.06,

where
f2 denotes a focal length of the second lens;
R3 denotes a curvature radius of an object side surface of the second lens;
R4 denotes a curvature radius of an 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 an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

5. The camera optical lens as described in claim 1 , further satisfying following conditions:
0.66≤( R 5+ R 6)/( R 5− R 6)≤10.29; and

0.02≤ d 5/ TTL≤ 0.06,

where
R5 denotes a curvature radius of an object side surface of the third lens;
R6 denotes a curvature radius of an 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 an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

6. The camera optical lens as described in claim 1 , further satisfying following conditions:
−218.89≤ f 4/ f≤ 24.99;

−4.67≤( R 7+ R 8)/( R 7− R 8)≤0.39; and

0.04≤ d 7/ TTL≤ 0.14,

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 an 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 an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

7. The camera optical lens as described in claim 1 , further satisfying following conditions:
−10.13≤ f 5/ f≤ 2493.58; and

0.02≤ d 9/ TTL≤ 0.09,

where
f5 denotes a focal length of the fifth lens;
d9 denotes an on-axis thickness of the fifth lens; and
TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

8. The camera optical lens as described in claim 1 , further satisfying following conditions:
0.33 ≤f 6 /f≤ 1.92;
−4.89≤( R 11 +R 12)/( R 11 −R 12)≤0.21; and

0.04 ≤d 11 /TTL≤ 0.15,
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 an 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 an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

9. The camera optical lens as described in claim 1 , further satisfying following conditions:
0.03≤( R 13+ R 14)/( R 13− R 14)≤0.83; and

0.03≤ d 13/ TTL≤ 0.11,

where
R13 denotes a curvature radius of an object side surface of the seventh lens;
R14 denotes a curvature radius of an image side surface of the seventh lens;
d13 denotes an on-axis thickness of the seventh lens; and
TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

Assignees

• Aac Communication Tech Changzhou Co Ltd
• Aac Optics Changzhou Co Ltd

Inventors

• Zhou Xuepeng

Classifications

• G02B1/041

  Lenses · CPC title

• G02B9/64 Primary

  having more than six components · CPC title

• G02B13/0045 Primary

  having five or more lenses · CPC title

• G02B13/06

  Panoramic objectives; So-called "sky lenses" {including panoramic objectives having reflecting surfaces} · CPC title

• G02B13/18

  with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration {(G02B13/002 takes precedence)} · CPC title