Camera optical lens

Patent metadata

Field	Value
Publication number	US-2021396966-A1
Application number	US-202017134500-A
Country	US
Kind code	A1
Filing date	Dec 28, 2020
Priority date	Jun 23, 2020
Publication date	Dec 23, 2021
Grant date	—

Abstract

A camera optical lens includes a first lens to a fifth lens. The camera optical lens satisfies 1.80≤f1/f≤3.50; 1.25≤d7/d9≤1.80; 0.40≤f4/f≤0.90; 3.50≤R9/R10≤7.50; and 1.00≤R3/R4≤2.00, where f denotes an total focal length of the camera optical lens, f1 denotes a focal length of the first lens, f4 denotes a focal length of a fourth lens, R3 denotes a curvature radius of an object side surface of a second lens, R4 denotes a curvature radius of an image side surface of the second 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, and d9 denotes an on-axis thickness of the fifth lens. The camera optical lens meets design requirements of a large aperture, a wide angle, and ultra-thinness while having good optical performance.

First claim

What is claimed is:

1 . A camera optical lens, comprising from an object side to an image side:
a first lens having positive refractive power; a second lens having positive refractive power; a third lens; a fourth lens having positive refractive power; and a fifth lens having negative refractive power; wherein the camera optical lens satisfies:
1.80≤ f 1/ f≤ 3.50;

1.25≤ d 7/ d 9≤1.80;

0.40≤ f 4/ f≤ 0.90;

3.50≤ R 9/ R 10≤7.50; and

1.00≤ R 3/ R 4≤2.00,

where f denotes a total focal length of the camera optical lens, f1 denotes a focal length of the first 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, 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, and d9 denotes an on-axis thickness of the fifth lens.

2 . The camera optical lens as described in claim 1 , further satisfying:
1.80≤ d 2/ d 4≤3.00,
where d2 denotes an on-axis distance from an image side surface of the first lens to an object side surface of the second lens, and d4 denotes an on-axis distance from an image side surface of the second lens to an object side surface of the third lens.

3 . The camera optical lens as described in claim 1 , further satisfying:
−3.61≤( R 1+ R 2)/( R 1- R 2)≤−0.36; and
0.05≤ d 1/ TTL≤ 0.16,
where 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:
0.77≤ f 2/ f≤ 48.42;
1.52≤( R 3+ R 4)/( R 3− R 4)≤33.19; and
0.03≤ d 3/ TTL≤ 0.11,
where f2 denotes a focal length 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:
−15.19≤ f 3/ f≤ 57.84;
−12.25≤( R 5+ R 6)/( R 5− R 6)≤179.50; and
0.04≤ d 5/ TTL≤ 0.11,
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, 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:
1.15≤( R 7+ R 8)/( R 7− R 8)≤6.48; and
0.09≤ d 7/ TTL≤ 0.31,
where 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:
−2.21≤ f 5/ f≤− 0.32;
0.66≤( R 9+ R 10)/( R 9− R 10)≤2.65; and
0.06≤ d 9/ TTL≤ 0.22,
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:
TTL/IH≤ 1.45, where IH denotes an image height of the camera optical 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:
FOV≥104.00°,
where FOV denotes a field of view of the camera optical lens.

10 . The camera optical lens as described in claim 1 , further satisfying:
FNO ≤2.46,
where FNO denotes an F number of the camera optical lens.

Assignees

• Aac Optics Changzhou Co Ltd

Inventors

• Zhu Feng

Classifications

• G02B27/0012

  Optical design, e.g. procedures, algorithms, optimisation routines · 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

• G02B15/145115 Primary

  arranged ++++- · 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