Optical camera lens

Patent metadata

Field	Value
Publication number	US-9964740-B1
Application number	US-201715416753-A
Country	US
Kind code	B1
Filing date	Jan 26, 2017
Priority date	Dec 14, 2016
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

The present disclosure relates to the field of optical lens, and discloses an optical camera lens, which includes: an aperture, a first lens having positive refraction power, a second lens having negative refraction power, a third lens having positive refraction power, a fourth lens having negative refraction power and a fifth lens having negative refraction power; the optical camera lens satisfies following relational expressions: 0.45<f1/f<0.55, −0.85<f2/f<−0.75, 2.0<f3/f<2.3, −3.4<f4/f<−3, −1.3<f5/f<−1.1, 0.2<f2/f4<0.3. The optical camera lens provided by the present disclosure can meet the design requirements on low TTL and large aperture, which has good sensitivity performance.

First claim

What is claimed is:

1. An optical camera lens, from an object side to an image side, successively comprising:
an aperture;
a first lens having positive refraction power;
a second lens having negative refraction power;
a third lens having positive refraction power;
a fourth lens having negative refraction power; and
a fifth lens having negative refraction power;
wherein a focal length of the integral optical camera lens is f, a focal length of the first lens is f1, a focal length of the second lens is f2, a focal length of the third lens is f3, a focal length of the fourth lens is f4 and a focal length of the fifth lens is f5, which satisfy following relational expressions:
0.45<f1/f<0.55;
−0.85<f2/f<−0.75;
2.0<f3/f<2.3;
−3.4<f4/f<−3;
−1.3<f5/f<−1.1;
0.2<f2/f4<0.3.

2. The optical camera lens as described in claim 1 , wherein the focal length f1 of the first lens, the focal length f2 of the second lens, the focal length f3 of the third lens, the focal length f4 of the fourth lens and the focal length f5 of the fifth lens satisfy following relational expressions, respectively:
2.6<f1<3.0;
−4.5<f2<−4.1;
11<f3<12;
−18<f4<−16.5;
−7<f5<−6.

3. The optical camera lens as described in claim 1 , wherein a refractive index n1 of the first lens, a refractive index n2 of the second lens, a refractive index n3 of the third lens, a refractive index n4 of the fourth lens and a refractive index n5 of the fifth lens satisfy following relational expressions, respectively:
1.52<n1<1.56;
1.62<n2<1.68;
1.62<n3<1.68;
1.52<n4<1.56;
1.52<n5<1.56.

4. The optical camera lens as described in claim 1 , wherein an abbe number v1 of the first lens, an abbe number v2 of the second lens, an abbe number v3 of the third lens, an abbe number v4 of the fourth lens and an abbe number v5 of the fifth lens satisfy following relational expressions, respectively:
50<v1<60;
20<v2<23;
20<v3<23;
50<v4<60;
50<v5<60.

5. The optical camera lens as described in claim 1 , wherein a total track length of the optical camera lens is less than or equal to 5.1 mm.

6. The optical camera lens as described in claim 1 , wherein the focal length f of the integral optical camera lens satisfies relational expression: f>5.3 mm.

7. The optical camera lens as described in claim 1 , wherein a field of view (FOV) satisfies relational expression: 48°<FOV<52°.

8. The optical camera lens as described in claim 1 , wherein an aperture value F of the optical camera lens is equal to or less than 2.2.

Assignees

• Wang Jianming
• Aac Technologies Pte Ltd

Inventors

• Wang Jianming

Classifications

• G02B13/0045 Primary

  having five or more lenses · CPC title

• G02B5/005

  Diaphragms (for cameras G03B9/02) · 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

• G02B9/60

  having five components only · CPC title

• G02B13/002

  having at least one aspherical surface · CPC title