Camera optical lens

Patent metadata

Field	Value
Publication number	US-12130411-B2
Application number	US-202017131760-A
Country	US
Kind code	B2
Filing date	Dec 23, 2020
Priority date	Feb 24, 2020
Publication date	Oct 29, 2024
Grant date	Oct 29, 2024

Abstract

Provided is a camera optical lens, which includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. At least one of the first lens to the sixth lens includes a free-form surface. The the camera optical lens satisfies 3.00≤v1/v2≤4.00, and −12.00≤f4/f≤−1.80, where f denotes a focal length of the camera optical lens, f4 denotes a focal length of the fourth lens, v1 denotes an abbe number of the first lens, and v2 denotes an abbe number of the second lens. The camera optical lens according to the present disclosure has optical performance and meet the design requirements of being ultra-thin, and having a wide-angle.

First claim

What is claimed is:

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 negative refractive power;
a fourth lens having a negative refractive power;
a fifth lens having a positive refractive power; and
a sixth lens having a negative refractive power,
wherein at least one of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, or the sixth lens comprises a free-form surface, and
wherein the camera optical lens satisfies following conditions:
3.00≤v1/v2≤4.00;
−12.00≤f4/f≤−1.80;
−1.26≤(R3+R4)/(R3−R4)≤−0.6298;
2.23≤(R7+R8)/(R7−R8)≤22.34;
R9/R10≤−1.50; and
0.02≤d7/TTL≤0.08,
where
f denotes a focal length of the camera optical lens,
f4 denotes a focal length of the fourth 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,
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,
R9 denotes a curvature radius of an object-side surface of the fifth lens,
R10 denotes a curvature radius of an image-side surface of the fifth 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 plane of the camera optical lens along an optic axis,
v1 denotes an abbe number of the first lens, and
v2 denotes an abbe number of the second lens.

2. The camera optical lens as described in claim 1 , further satisfying a following condition:
0.30≤d6/d8≤1.00,
where
d6 denotes an on-axis distance from an image-side surface of the third lens to an object-side surface of the fourth lens, and
d8 denotes an on-axis distance from an image-side surface of the fourth lens to an object-side surface of the fifth lens.

3. The camera optical lens as described in claim 1 , further satisfying following conditions:
0.47≤f1/f≤1.83;
−4.42≤ (R1+R2)/(R1−R2)≤−0.64; and
0.05≤d1/TTL≤0.22,
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.

4. The camera optical lens as described in claim 1 , further satisfying following conditions:
−13.02≤f2/f≤− 1 . 32 ; and
0.02≤d3/TTL≤0.07,
where
f2 denotes a focal length of the second lens,
d3 denotes an on-axis thickness of the second lens.

5. The camera optical lens as described in claim 1 , further satisfying following conditions:
−162.51≤f3/f≤−1.35;
−10.50≤ (R5+R6)/(R5−R6)≤2.11; and
0.03≤d5/TTL≤0.16,
where
f3 denotes a focal length of the third lens,
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.

6. The camera optical lens as described in claim 1 , further satisfying following conditions:
0.22≤f5/f≤1.05;
0.16≤ (R9+R10)/(R9−R10)≤1.40; and
0.08≤d9/TTL≤0.32,
where
f5 denotes a focal length of the fifth lens,
R9 denotes a curvature radius of an object-side surface of the fifth lens,
R10 denotes a curvature radius of an image-side surface of the fifth lens,
d9 denotes an on-axis thickness of the fifth lens.

7. The camera optical lens as described in claim 1 , further satisfying following conditions:
−1.22≤f6/f≤−0.36;
0.05≤ (R11+R12)/(R11−R12)≤1.13; and
0.04≤d11/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 an image-side surface of the sixth lens,
d11 denotes an on-axis thickness of the sixth lens.

8. The camera optical lens as described in claim 1 , further satisfying a following condition:
Fno≤1.91,
where
Fno denotes an F number of the camera optical lens.

Assignees

• Aac Optics Changzhou Co Ltd

Inventors

• Chen Jia
• Sun Wen

Classifications

• H04N23/55

  Optical parts specially adapted for electronic image sensors; Mounting thereof · CPC title

• G02B13/06

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

• G02B9/62 Primary

  having six components only · CPC title

• G02B13/0045 Primary

  having five or more lenses · 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