Camera optical lens

Patent metadata

Field	Value
Publication number	US-10775593-B2
Application number	US-201816102019-A
Country	US
Kind code	B2
Filing date	Aug 13, 2018
Priority date	Nov 17, 2017
Publication date	Sep 15, 2020
Grant date	Sep 15, 2020

Abstract

The present disclosure discloses a camera optical lens. The camera optical lens includes, in an order from an object side to an image side, an aperture, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The camera optical lens further satisfies specific conditions.

First claim

What is claimed is:

1. A camera optical lens comprising, from an object side to an image side in sequence: 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 positive refractive power, a fifth lens having a negative refractive power; wherein the camera optical lens further satisfies the following conditions:
0.90< f 1/ f< 0.95;
−3.1< f 2/ f<− 2.8;

−17< f 3/ f<− 15;

0.6< f 4/ f< 0.7;
−0.60< f 5/ f<− 0.55;

40 mm −2 <1/( d 3* d 5)<45 mm 2 ;
where
f: a focal length of the camera optical lens;
f 1 : a focal length of the first lens;
f 2 : a focal length of the second lens;
f 3 : a focal length of the third lens;
f 4 : a focal length of the fourth lens;
f 5 : a focal length of the fifth lens;
d 3 : a thickness on-axis of the second lens;
d 5 : a thickness on-axis of the third lens.

2. The camera optical lens as described in claim 1 further satisfying the following condition:
3.6< n 2* n 3<3.9; where
n 2 : the refractive index of the second lens;
n 3 : the refractive index of the third lens.

3. The camera optical lens as described in claim 1 further satisfying the following condition:
1.2<( R 3+ R 4)/( R 3− R 4)<1.4; where

R 3 : a curvature radius of object side surface of the second lens;
R 4 : a curvature radius of image side surface of the second lens.

4. The camera optical lens as described in claim 1 further satisfying the following conditions:
3.2 mm< f 1<3.4 mm;
−11 mm< f 2<−10 mm;

−60 mm< f 3<−55 mm;

2.2 mm< f 4<2.4 mm;
−2.1 mm< f 5<−1.9 mm; where

f 1 : the focal length of the first lens;
f 2 : the focal length of the second lens;
f 3 : the focal length of the third lens;
f 4 : the focal length of the fourth lens;
f 5 : the focal length of the fifth lens.

5. The camera optical lens as described in claim 1 , further satisfying the following conditions:
1.5< n 1<1.6;
1.8< n 2<1.9;
1.9< n 3<2.1;
1.53< n 4<1.55;
1.52< n 5<1.55; where
n 1 : a refractive index of the first lens;
n 2 : a refractive index of the second lens;
n 3 : a refractive index of the third lens;
n 4 : a refractive index of the fourth lens;
n 5 : a refractive index of the fifth lens.

6. The camera optical lens as described in claim 1 further satisfying the following conditions:
55< v 1<57;
23< v 2<25;
19< v 3<21;
55< v 4<57;
55< v 5<57; where
v 1 : a abbe number of the first lens;
v 2 : a abbe number of the second lens;
v 3 : a abbe number of the third lens;
v 4 : a abbe number of the fourth lens;
v 5 : a abbe number of the fifth lens.

7. The camera optical lens as described in claim 1 , wherein the total optical length of the camera optical lens from the object side surface of the first lens to the image surface along the optic axis is less than or equal to 4.48 mm.

8. The camera optical lens as described in claim 1 , wherein an aperture F number of the camera optical lens is less than or equal to 1.7.

9. The camera optical lens as described in claim 1 further satisfying the following condition:
0.88< d 3/ d 5<0.92; where
d 3 : a thickness on-axis of the second lens;
d 5 : a thickness on-axis of the third lens.

Assignees

• Aac Acoustic Tech Shenzhen Co Ltd
• Aac Communication Tech Changzhou Co Ltd

Inventors

• Wang Jianming

Classifications

• G02B3/04

  with continuous faces that are rotationally symmetrical but deviate from a true sphere {, e.g. so called "aspheric" lenses} · CPC title

• G02B13/0045 Primary

  having five or more lenses · CPC title

• G02B9/60 Primary

  having five components only · CPC title

• G02B5/20

  Filters (polarising elements G02B5/30) · 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