Camera device and optical imaging lens thereof

Patent metadata

Field	Value
Publication number	US-9557529-B2
Application number	US-201414261148-A
Country	US
Kind code	B2
Filing date	Apr 24, 2014
Priority date	Dec 18, 2013
Publication date	Jan 31, 2017
Grant date	Jan 31, 2017

Abstract

The present invention provides a camera device and an optical imaging lens thereof. The optical imaging lens comprises five lens elements positioned in an order from an object side to an image side. Through controlling the convex or concave shape of the surfaces of the lens elements, the view angle of the optical imaging lens is efficiently increased to provide better optical characteristics.

First claim

What is claimed is:

1. An optical imaging lens, sequentially from an object side to an image side along an optical axis, comprising first, second, third, fourth and fifth lens elements, each of said first, second, third, fourth and fifth lens elements having refracting power, an object-side surface facing toward the object side and an image-side surface facing toward the image side, wherein:
said object-side surface of said first lens element comprises a convex portion in a vicinity of the optical axis;
said image-side surface of said second lens element comprises a concave portion in a vicinity of a periphery of the second lens element;
said image-side surface of said third lens element comprises a convex portion in a vicinity of the optical axis;
said image-side surface of said fourth lens element comprises a concave portion in a vicinity of the optical axis;
said image-side surface of said fifth lens element comprises a convex portion in a vicinity of the optical axis;
an abbe number of the first lens element is V1, an abbe number of the third lens element is V3, and V1 and V3 satisfy the equation:
20.0≦ V 1− V 3; and

a central thickness of the third lens element along the optical axis is T3, a central thickness of the fifth lens element along the optical axis is T5, and T3 and T5 satisfy the equation:
1.0≦ T 3/ T 5.

2. The optical imaging lens according to claim 1 , wherein the sum of the thickness of all five lens elements along the optical axis is ALT, a central thickness of the fourth lens element along the optical axis is T4, and T4 and ALT satisfy the equation:
5.5≦ ALT/T 4.

3. The optical imaging lens according to claim 2 , wherein a focal length of the third lens element is f3, a focal length of the optical imaging lens is f, and f3 and f satisfy the equation:
1.0≦| f 3/ f|.

4. The optical imaging lens according to claim 3 , wherein the object-side surface of the third lens element is a concave surface.

5. The optical imaging lens according to claim 4 , wherein an abbe number of the first lens element is V1, an abbe number of the second lens element is V2, and V1 and V2 satisfy the equation:
V 1− V 2≦20.0.

6. The optical imaging lens according to claim 3 , wherein a focal length of the first lens element is f1, a focal length of the second lens element is f2, and f1, f2 and f satisfy the equation:
7.5≦| f 1/ f|+|f 2/ f|.

7. The optical imaging lens according to claim 6 , wherein a central thickness of the first lens element along the optical axis is T1, and T1 and T5 satisfy the equation:
0.8≦ T 1/ T 5.

8. The optical imaging lens according to claim 1 , wherein a focal length of the third lens element is f3, a focal length of the optical imaging lens is f, and f3 and f satisfy the equation:
1.0≦| f 3/ f|.

9. The optical imaging lens according to claim 8 , wherein the sum of all four air gaps from the first lens element to the fifth lens element along the optical axis is AAG, and T5 and AAG satisfy the equation:
4.4≦ AAG/T 5.

10. The optical imaging lens according to claim 9 , wherein an air gap between the third lens element and the fourth lens element along the optical axis is AG34, and T5 and AG34 satisfy the equation:
0.4≦ AG 34/ T 5.

11. The optical imaging lens according to claim 9 , wherein an abbe number of the second lens element is V2, an abbe number of the third lens element is V3, and V2 and V3 satisfy the equation:
0.0≦ V 2− V 3.

12. The optical imaging lens according to claim 9 , wherein an air gap between the third lens element and the fourth lens element along the optical axis is AG34, the sum of the thickness of all five lens elements along the optical axis is ALT, and AG34 and ALT satisfy the equation:
ALT/AG 34≦12.0.

13. The optical imaging lens according to claim 1 , wherein the sum of all four air gaps from the first lens element to the fifth lens element along the optical axis is AAG, and T5 and AAG satisfy the equation:
4.4≦ AAG/T 5.

14. The optical imaging lens according to claim 13 , wherein a central thickness of the fourth lens element along the optical axis is T4, a back focal length of the optical imaging lens, i.e. the distance from the image-side surface of the fifth lens element to an image plane on the optical axis is BFL, and T4 and BFL satisfy the equation:
4.1≦ BFL/T 4.

15. The optical imaging lens according to claim 14 , wherein an air gap between the third lens element and the fourth lens element along the optical axis is AG34, and T4 and AG34 satisfy the equation:
1.8≦ AG 34/ T 4.

16. The optical imaging lens according to claim 13 , wherein a focal length of the optical imaging lens is f, the distance from the object-side surface of the first lens element to an image plane is TTL, and f and TTL satisfy the equation:
3.5≦ TTL/f.

17. The optical imaging lens according to claim 16 , wherein a central thickness of the second lens element along the optical axis is T2, an air gap between the third lens element and the fourth lens element along the optical axis is AG34, and T4 and AG34 satisfy the equation:
0.6≦ AG 34/ T 2.

18. A camera device, comprising:
a housing; and
a photography module positioned in the housing and comprising:
an optical imaging lens, sequentially from an object side to an image side along an optical axis, comprising first, second, third, fourth and fifth lens elements, each of said first, second, third, fourth and fifth lens elements having refracting power, an object-side surface facing toward the object side and an image-side surface facing toward the image side, wherein:
said object-side surface of said first lens element comprises a convex portion in a vicinity of the optical axis;
said image-side surface of said second lens element comprises a concave portion in a vicinity of a periphery of the second lens element;
said image-side surface of said third lens element comprises a convex portion in a vicinity of the optical axis;
said image-side surface of said fourth lens element comprises a concave portion in a vicinity of the optical axis;
said image-side surface of said fifth lens element comprises a convex portion in a vicinity of the optical axis;
an abbe number of the first lens element is V1, an abbe number of the third lens element is V3, and V1 and V3 satisfy the equation:
20.0≦ V 1− V 3; and

a central thickness of the third lens element along the optical axis is T3, a central thickness of the fifth lens element along the optical axis is T5, and T3 and T5 satisfy the equation:
1.0≦ T 3/ T 5;

a lens barrel for positioning the optical imaging lens;
a module housing unit for positioning the lens barrel; and
an image sensor positioned at the image side of the optical imaging lens.

Assignees

• Genius Electronic Optical Co Ltd

Inventors

• Lee Poche
• Yeh Chih Yang
• Tang Tzu-Chien

Classifications

• G02B13/0045 Primary

  having five or more lenses · CPC title