Optical imaging lens

Patent metadata

Field	Value
Publication number	US-2018188482-A1
Application number	US-201715441241-A
Country	US
Kind code	A1
Filing date	Feb 24, 2017
Priority date	Dec 30, 2016
Publication date	Jul 5, 2018
Grant date	—

Abstract

An optical imaging lens includes 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 arranged in order from an object side to an image side along an optical axis. Each lens element has an object-side surface and an image-side surface. The optical imaging lens satisfies: V4+V5+V6+V7≤175.00, wherein V4 is an Abbe number of the fourth lens element, V5 is an Abbe number of the fifth lens element, V6 is an Abbe number of the sixth lens element, and V7 is an Abbe number of the seventh lens element.

First claim

What is claimed is:

1 . An optical imaging lens, 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 arranged in sequence from an object side to an image side along an optical axis, each of the first lens element to the seventh lens element comprising an object-side surface facing the object side and allowing imaging rays to pass through and an image-side surface facing the image side and allowing the imaging rays to pass through, wherein
the first lens element has positive refracting power; the object-side surface of the second lens element has a convex portion in a vicinity of the optical axis; the third lens element has positive refracting power; the fourth lens element has positive refracting power; at least one of the object-side surface and the image-side surface of the fifth lens element is an aspheric surface; the image-side surface of the sixth lens element has a concave portion in a vicinity of the optical axis; the object-side surface and the image-side surface of the seventh lens element are both aspheric surfaces; the optical imaging lens satisfies:
V 4+ V 5+ V 6+ V 7≤175.00,

V4 is an Abbe number of the fourth lens element; V5 is an Abbe number of the fifth lens element; V6 is an Abbe number of the sixth lens element; and V7 is an Abbe number of the seventh lens element.

2 . The optical imaging lens according to claim 1 , wherein the optical imaging lens further satisfies:
( T 2+ G 45+ G 56+ G 67+ BFL )/( T 1+ T 4+ G 34)≤1.80,
T1 is a thickness of the first lens element along the optical axis; T2 is a thickness of the second lens element along the optical axis; T4 is a thickness of the fourth lens element along the optical axis; G34 is an air gap from the third lens element to the fourth lens element along the optical axis; G45 is an air gap from the fourth lens element to the fifth lens element along the optical axis; G67 is an air gap from the sixth 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 of the optical imaging lens along the optical axis.

3 . The optical imaging lens according claim 1 , wherein the optical imaging lens further satisfies:
( T 1+ T 6+ T 7+ G 45+ G 67)/( T 3+ T 4+ G 34)≤2.25,
T1 is a thickness of the first lens element along the optical axis; T3 is a thickness of the third lens element along the optical axis; T4 is a thickness of the fourth lens element along the optical axis; T6 is a thickness of the sixth lens element along the optical axis; T7 is a thickness of the seventh lens element along the optical axis; G34 is an air gap from the third lens element to the fourth lens element along the optical axis; G45 is an air gap from the fourth lens element to the fifth lens element along the optical axis; and G67 is an air gap from the sixth lens element to the seventh lens element along the optical axis.

4 . The optical imaging lens according claim 1 , wherein the optical imaging lens further satisfies:
( T 2+ G 12+ G 45+ G 56+ G 67)/( T 3+ G 23)≤2.20,
T2 is a thickness of the second lens element along the optical axis; T3 is a thickness of the third lens element along the optical axis; G12 is an air gap from the first lens element to the second lens element along the optical axis; G23 is an air gap from the second lens element to the third lens element along the optical axis; G45 is an air gap from the fourth lens element to the fifth lens element along the optical axis; G56 is an air gap from the fifth lens element to the sixth lens element along the optical axis; and G67 is an air gap from the sixth lens element to the seventh lens element along the optical axis.

5 . The optical imaging lens according to claim 1 , wherein the optical imaging lens further satisfies:
( AAG+BFL )/( T 3+ T 4)≤3.00,
T3 is a thickness of the third lens element along the optical axis; T4 is a thickness of the fourth lens element along the optical axis; AAG is a sum of sixth 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 of the optical imaging lens along the optical axis.

6 . The optical imaging lens according to claim 1 , wherein the optical imaging lens further satisfies:
( T 2+ T 7)/ G 23≤4.80,
T2 is a thickness of the second lens element along the optical axis; T7 is a thickness of the seventh lens element along the optical axis; and G23 is an air gap from the second lens element to the third lens element along the optical axis.

7 . The optical imaging lens according to claim 1 , wherein the optical imaging lens further satisfies:
( G 45+ G 56+ G 67)/ T 3≤2.40,
T3 is a thickness of the third lens element along the optical axis; G45 is an air gap from the fourth lens element to the fifth lens element along the optical axis; G56 is an air gap from the fifth lens element to the sixth lens element along the optical axis; and G67 is an air gap from the sixth lens element to the seventh lens element along the optical axis.

8 . The optical imaging lens according to claim 1 , wherein the optical imaging lens further satisfies:
( G 45+ G 56+ G 67)/ T 4≤3.50,
T4 is a thickness of the fourth lens element along the optical axis; G45 is an air gap from the fourth lens element to the fifth lens element along the optical axis; G56 is an air gap from the fifth lens element to the sixth lens element along the optical axis; and G67 is an air gap from the sixth lens element to the seventh lens element along the optical axis.

9 . The optical imaging lens according to claim 1 , wherein the optical imaging lens further satisfies:
EFL/( T 1+ T 3)≤4.40,
T1 is a thickness of the first lens element along the optical axis; T3 is a thickness of the third lens element along the optical axis; and EFL is an effective focal length of the optical imaging lens.

10 . The optical imaging lens according to claim 1 , wherein the optical imaging lens further satisfies:
ALT /( T 3+ T 4)≤3.50,
T3 is a thickness of the third lens element along the optical axis; T4 is a thickness of the fourth lens element along the optical axis; and ALT is a sum of thicknesses of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element, the sixth lens element, and the seventh lens element along the optical axis.

11 . An optical imaging lens, 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 arranged in sequence from an object side to an image side along an optical axis, each of the first lens element to the seventh lens element comprising an object-side surface facing the object side and allowing imaging rays to pass through and an image-side surface facing the image side and allowing the imaging rays to pass through;
the first lens element has positive refracting power; the third lens element has positive refracting power; the fourth lens element has positive refracting power; the image-side surface of the fifth lens element has a convex portion in a vicinity of a periphery of the fifth lens element; the image-side surface of the sixth lens element has a concave portion in a vicinity of the optical axis; the object-side surface and the image-side surface of the seventh lens element are both aspheric surfaces; the optical imaging lens satisfies:
V 4+ V 5+ V 6+ V 7≤175.00,

V4 is an

Assignees

• Genius Electronic Optical Co Ltd

Inventors

• Jhang Jia-Sin
• Lin Maozong
• Tang Ruyou

Classifications

• 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

• G02B13/0045 Primary

  having five or more lenses · CPC title

• G02B7/021

  for more than one lens · CPC title

• G02B3/04

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