Optical camera lens

Patent metadata

Field	Value
Publication number	US-10120167-B2
Application number	US-201715416682-A
Country	US
Kind code	B2
Filing date	Jan 26, 2017
Priority date	Dec 14, 2016
Publication date	Nov 6, 2018
Grant date	Nov 6, 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 negative refraction power, a fourth lens having positive refraction power and a fifth lens having negative refraction power, which satisfy following relational expressions: 0.70<f 1 /f<0.80, −1.9<f 2 /f<−1.7, −18<f 3 /f<−13, 0.59<f 4 /f<0.63, −0.52<f 5 /f<−0.48; 17<v 3 /n 3 <20, 1.08<n 3 /n 5 <1.20, 0.03<d 5 /TTL<0.04, 1.08<(f 3 −f 4 )/(f 3 +f 4 )<1.10. The optical camera lens provided by the present disclosure can satisfy the requirements on high pixel and large image height.

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 negative refraction power;
a fourth lens having positive 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 f 1 , a focal length of the second lens is f 2 , a focal length of the third lens is f 3 , a focal length of the fourth lens is f 4 and a focal length of the fifth lens is f 5 , which satisfy following relational expressions:
0.70< f 1/ f< 0.80;
−1.9< f 2 /f<− 1.7;

−18< f 3/ f<− 13;

0.59< f 4 /f< 0.63;
−0.52< f 5/ f<− 0.48;

wherein an abbe number of the third lens is v 3 , a refractive index of the third lens is n 3 , a refractive index of the fifth lens is n 5 , a thickness of the third lens is d 5 , a total track length of the optical camera lens is TTL, which satisfy following relational expressions:
17< v 3/ n 3<20;
1.08< n 3/ n 5<1.20;
0.03< d 5/TTL<0.04;
1.08<( f 3− f 4)/( f 3+ f 4)<1.10.

2. The optical camera lens as described in claim 1 , wherein the focal length f 1 of the first lens, the focal length f 2 of the second lens, the focal length f 3 of the third lens, the focal length f 4 of the fourth lens and the focal length f 5 of the fifth lens satisfy following relational expressions, respectively:
2.7<f1<3.0;
−7.3< f 2<−6.8;

−66< f 3<−53;

2.2<f4<2.4;
−2.1< f 5<−1.9.

3. The optical camera lens as described in claim 1 , wherein the refractive index n 3 of the third lens satisfies following relational expression: n 3 >1.67.

4. The optical camera lens as described in claim 3 , wherein a refractive index n 1 of the first lens, a refractive index n 2 of the second lens, the refractive index n 3 of the third lens, a refractive index n 4 of the fourth lens and the refractive index n 5 of the fifth lens satisfy following relational expressions, respectively:
1.50<n1<1.55;
1.63<n2<1.68;
1.68<n3<1.72;
1.52<n4<1.56;
1.52<n5<1.55.

5. The optical camera lens as described in claim 1 , wherein an abbe number v 1 of the first lens, an abbe number v 2 of the second lens, the abbe number v 3 of the third lens, an abbe number v 4 of the fourth lens and an abbe number v 5 of the fifth lens satisfy following relational expressions, respectively:
52<v1<62;
20<v2<24;
30<v3<32;
48<v4<58;
53<v5<63.

6. The optical camera lens as described in claim 5 , wherein the abbe number v 1 of the first lens, the abbe number v 3 of the third lens satisfy following relational expression:
18< V 1 −V 3<28.

7. The optical camera lens as described in claim 1 , wherein the total track length of the optical camera lens is less than or equal to 4.45 mm.

8. The optical camera lens as described in claim 1 , wherein the optical camera lens satisfies following relational expression: 0.40<|f 1 /f 2 |<0.42.

9. The optical camera lens as described in claim 1 , wherein the third lens is a glass lens, other lenses are plastic lenses.

Assignees

• Wang Jianming
• Aac Technologies Pte Ltd

Inventors

• Wang Jianming

Classifications

• G02B13/0045 Primary

  having five or more lenses · CPC title

• G02B9/60

  having five components only · CPC title