Optical camera lens

Patent metadata

Field	Value
Publication number	US-9933600-B1
Application number	US-201715416520-A
Country	US
Kind code	B1
Filing date	Jan 26, 2017
Priority date	Dec 14, 2016
Publication date	Apr 3, 2018
Grant date	Apr 3, 2018

Abstract

The present disclosure provides 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 positive refraction power, and a fifth lens having negative refraction power; a combined focal length of the first lens and the second lens is f12, a focal length of the third lens is f3, a total track length of the integral optical camera lens is TTL, an image height of the integral optical camera lens is IH, curvature radii of the object-side surface and the image-side surface of the third lens is r5 and r6, respectively, which satisfy the following relational expressions: 53<f3/f12<68; TTL/IH<1.4; 0.95<r5/r6<1.1; f3>200. The optical camera lens provided by the present disclosure can satisfy the needs on low TTL and wide angle, meanwhile reducing sensitivity of the component.

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 positive refraction power; and
a fifth lens having negative refraction power;
wherein a combined focal length of the first lens and the second lens is f12, a focal length of the third lens is f3, a total track length of the integral optical camera lens is TTL, an image height of the integral optical camera lens is IH, a curvature radius of an object-side surface of the third lens is r5, a curvature radius of an image-side surface of the third lens is r6, which satisfy following relational expressions:
53< f 3/ f 12<68;
TTL/IH<1.4;
0.95< r 5/ r 6<1.1;
f 3>200.

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< f 1<3;
−4< f 2<− 6 ;

2< f 4<3;
−1< f 5<−2.

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:
1.50< n 1<1.55;
1.50< n 2<1.55;
1.50< n 3<1.55;
1.60< n 4<1.70;
1.60< n 5<1.70.

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:
40< v 1<60;
15< v 2<30;
15< v 3<30;
40< v 4<60;
40< v 5<60.

Assignees

• Fang Chunhuan
• Aac Technologies Pte Ltd

Inventors

• Fang Chunhuan

Classifications

• G02B5/005

  Diaphragms (for cameras G03B9/02) · CPC title

• G02B9/60

  having five components only · 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

• G02B13/0045 Primary

  having five or more lenses · CPC title

• G02B27/0025

  for optical correction, e.g. distorsion, aberration · CPC title