Optical imaging lens

Patent metadata

Field	Value
Publication number	US-2019204555-A1
Application number	US-201815915079-A
Country	US
Kind code	A1
Filing date	Mar 8, 2018
Priority date	Dec 29, 2017
Publication date	Jul 4, 2019
Grant date	—

Abstract

An optical imaging lens includes a first lens element to a seventh lens element. The optical-axis region of the object-side surface of the fourth lens element is concave, the periphery region of the image-side surface of the fifth lens element is concave and the optical-axis region of the image-side surface of the sixth lens element is concave. AAG is the sum of total six air gaps from the first lens element to the seventh lens element and G12 is the air gap between the first lens element and the second lens element to satisfy AAG/G12≤10.000.

First claim

What is claimed is:

1 . An optical imaging lens, from an object side to an image side in order along an optical axis comprising: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element, wherein the first lens element to the seventh lens element each has an object-side surface facing toward the object side to allow an imaging ray to pass through as well as an image-side surface facing toward the image side to allow the imaging ray to pass through, wherein:
an optical-axis region of the object-side surface of the fourth lens element is concave; a periphery region of the image-side surface of the fifth lens element is concave; and an optical-axis region of the image-side surface of the sixth lens element is concave; the lens elements having refracting power included by the optical imaging lens are only the seven lens elements described above, wherein, AAG is a sum of total six air gaps from the first lens element to the seventh lens element and G 12 is an air gap between the first lens element and the second lens element, and the optical imaging lens satisfies the relationship: AAG/G 12 ≤10.000.

2 . The optical imaging lens of claim 1 , wherein T 7 is a thickness of the seventh lens element along the optical axis, G 23 is an air gap between the second lens element and the third lens element along the optical axis, G 34 is an air gap between the third lens element and the fourth lens element along the optical axis, G 45 is an air gap between the fourth lens element and the fifth lens element along the optical axis and G 56 is an air gap between the fifth lens element and the sixth lens element along the optical axis, and the optical imaging lens satisfies the relationship: (G 23 +G 34 +G 45 +G 56 )/T 7 ≤2.000.

3 . The optical imaging lens of claim 1 , wherein EFL is an effective focal length of the optical imaging lens and BFL is a distance from the image-side surface of the seventh lens element to an image plane along the optical axis, and the optical imaging lens satisfies the relationship: EFL/BFL≤5.200.

4 . The optical imaging lens of claim 1 , wherein T 1 is a thickness of the first lens element along the optical axis, T 4 is a thickness of the fourth lens element along the optical axis, T 5 is a thickness of the fifth lens element along the optical axis and T 6 is a thickness of the sixth lens element along the optical axis, and the optical imaging lens satisfies the relationship: (T 1 +T 6 )/(T 4 +T 5 )≤1.700.

5 . The optical imaging lens of claim 1 , wherein T 2 is a thickness of the second lens element along the optical axis and T 3 is a thickness of the third lens element along the optical axis, and the optical imaging lens satisfies the relationship: T 3 /T 2 ≤5.500.

6 . The optical imaging lens of claim 1 , wherein ALT is a sum of thickness of all the seven lens elements along the optical axis and T 3 is a thickness of the third lens element along the optical axis, and the optical imaging lens satisfies the relationship: ALT/T 3 ≤4.700.

7 . The optical imaging lens of claim 1 , wherein T 4 is a thickness of the fourth lens element along the optical axis and G 12 is an air gap between the first lens element and the second lens element along the optical axis, and the optical imaging lens satisfies the relationship: T 4 /G 12 ≤2.000.

8 . The optical imaging lens of claim 1 , wherein TL is a distance from the object-side surface of the first lens element to the image-side surface of the seventh lens element along the optical axis, T 5 is a thickness of the fifth lens element along the optical axis and T 6 is a thickness of the sixth lens element along the optical axis, and the optical imaging lens satisfies the relationship: TL/(T 5 +T 6 )≤7.500.

9 . The optical imaging lens of claim 1 , wherein AAG is a sum of six air gaps from the first lens element to the seventh lens element along the optical axis and BFL is a distance from the image-side surface of the seventh lens element to an image plane along the optical axis, and the optical imaging lens satisfies the relationship: AAG/BFL≤1.800.

10 . The optical imaging lens of claim 1 , wherein T 1 is a thickness of the first lens element along the optical axis, T 2 is a thickness of the second lens element along the optical axis, G 12 is an air gap between the first lens element and the second lens element along the optical axis and G 67 is an air gap between the sixth lens element and the seventh lens element along the optical axis, and the optical imaging lens satisfies the relationship: (T 2 +G 67 )/(T 1 +G 12 )≤1.300.

11 . The optical imaging lens of claim 1 , wherein TTL is a distance from the object-side surface of the first lens element to an imaging plane along the optical axis and BFL is a distance from the image-side surface of the seventh lens element to an image plane along the optical axis, and the optical imaging lens satisfies the relationship: TTL/BFL≤6.200.

12 . The optical imaging lens of claim 1 , wherein T 3 is a thickness of the third lens element along the optical axis, T 4 is a thickness of the fourth lens element along the optical axis, T 5 is a thickness of the fifth lens element along the optical axis, T 6 is a thickness of the sixth lens element along the optical axis, T 7 is a thickness of the seventh lens element along the optical axis, G 34 is an air gap between the third lens element and the fourth lens element along the optical axis, G 45 is an air gap between the fourth lens element and the fifth lens element along the optical axis and G 67 is an air gap between the sixth lens element and the seventh lens element along the optical axis, and the optical imaging lens satisfies the relationship: (T 3 +G 34 +T 4 +G 45 +T 5 )/(T 6 +G 67 +T 7 )≤1.700.

13 . The optical imaging lens of claim 1 , wherein T 2 is a thickness of the second lens element along the optical axis, T 6 is a thickness of the sixth lens element along the optical axis and T 7 is a thickness of the seventh lens element along the optical axis, and the optical imaging lens satisfies the relationship: (T 2 +T 6 )/T 7 ≤2.200.

14 . The optical imaging lens of claim 1 , wherein EFL is an effective focal length of the optical imaging lens and T 1 is a thickness of the first lens element along the optical axis, and the optical imaging lens satisfies the relationship: EFL/T 1 ≤7.200.

15 . The optical imaging lens of claim 1 , wherein T 4 is a thickness of the fourth lens element along the optical axis and G 67 is an air gap between the sixth lens element and the seventh lens element along the optical axis, and the optical imaging lens satisfies the relationship: G 67 /T 4 ≤2.200.

16 . The optical imaging lens of claim 1 , wherein AAG is a sum of six air gaps from the first lens element to the seventh lens element along the optical axis and T 5 is a thickness of the fifth lens element along the optical axis, and the optical imaging lens satisfies the relationship: AAG/T 5 ≤4.500.

17 . The optical imaging lens of claim 1 , wherein T 2 is a thickness of the second lens element along the optical axis, G 23 is an air gap between the second lens element and the third lens element along the optical axis, G 34 is an air gap between the third lens element and the fourth lens element along the optical axis, G 45 is an air gap between the fourth lens element and the fifth lens element along the optical axis and G 56 is an air gap between the fifth lens element and the sixth lens element along t

Assignees

• Genius Electronic Optical Xiamen Co Ltd

Inventors

• Jhang Jia-Sin
• Tang Ruyou
• Lai Yongfeng

Classifications

• G02B3/04

  with continuous faces that are rotationally symmetrical but deviate from a true sphere {, e.g. so called "aspheric" lenses} · CPC title

• G02B13/0045 Primary

  having five or more lenses · CPC title

• G02B9/64

  having more than six components · CPC title

• G02B13/06

  Panoramic objectives; So-called "sky lenses" {including panoramic objectives having reflecting surfaces} · 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