Camera optical lens

Patent metadata

Field	Value
Publication number	US-10775587-B2
Application number	US-201816102006-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:
0.75< f 1/ f< 0.80;
−2.1< f 2/ f<− 1.9;

−15< f 3/ f<− 13;

0.57< f 4/ f< 0.61;
−0.52< f 5/ f<− 0.48;

0.7<( R 3+ R 4)/( R 3− R 4)<0.8;

where
f: the focal length of the camera optical lens;
f1: the focal length of the first lens;
f2: the focal length of the second lens;
f3: the focal length of the third lens;
f4: the focal length of the fourth lens;
f5: the focal length of the fifth lens.
R 3 : the curvature radius of object side surface of the second lens;
R 4 : the curvature radius of image side surface of the second 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
n2: the refractive power of the second lens;
n3: the refractive power of the third lens.

3. The camera optical lens as described in claim 1 , further satisfying the following condition:
17<1/( d 3* d 5)<19; where
d3: the thickness on-axis of the second lens;
d5: the thickness on-axis of the third lens.

4. The camera optical lens as described in claim 1 further satisfying the following conditions:
2.9<f1<3.1;
−7.9<f2<−7.4;

−58<f3<−50;

2.2<f4<2.4;
−2.1<f5<−1.9; where

f1: the focal length of the first lens;
f2: the focal length of the second lens;
f3: the focal length of the third lens;
f4: the focal length of the fourth lens;
f5: the focal length of the fifth lens.

5. The camera optical lens as described in claim 1 , further satisfying the following conditions:
1.5<n1<1.6;
1.8<n2<1.9;
1.9<n3<2.1;
1.53<n4<1.55;
1.52<n5<1.55; where
n1: the refractive index of the first lens;
n2: the refractive index of the second lens;
n3: the refractive index of the third lens;
n4: the refractive index of the fourth lens;
n5: the refractive index of the fifth lens.

6. The camera optical lens as described in claim 1 further satisfying the following conditions:
55<v1<57;
23<v2<25;
19<v3<21;
55<v4<57;
55<v5<57; where
v1: The abbe number of the first lens;
v2: The abbe number of the second lens;
v3: The abbe number of the third lens;
v4: The abbe number of the fourth lens;
v5: The 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 is less than or equal to 4.6 mm.

8. The camera optical lens as described in claim 1 , wherein the aperture F number of the camera optical lens is less than or equal to 1.9.

9. The camera optical lens as described in claim 1 further satisfying the following condition:
0.8< d 3/ d 5<0.9; where
d3: the thickness on-axis of the second lens;
d5: the thickness on-axis of the third lens.

Assignees

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

Inventors

• Wang Jianming

Classifications

• G02B27/0037

  with diffracting elements (G02B27/0056 takes precedence; holographic optical elements G02B5/32; zone systems G02B5/1876) · CPC title

• G02B13/0025

  having one lens only · CPC title

• G02B9/60 Primary

  having five components only · CPC title

• G02B13/0045

  having five or more lenses · CPC title