Optical imaging lens system, image capturing unit and electronic device

Patent metadata

Field	Value
Publication number	US-2024402467-A1
Application number	US-202418800845-A
Country	US
Kind code	A1
Filing date	Aug 12, 2024
Priority date	Mar 5, 2021
Publication date	Dec 5, 2024
Grant date	—

Abstract

An optical imaging lens system includes ten lens elements which are, in order from an object side to an image side along an optical path: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, an eighth lens element, a ninth lens element and a tenth lens element. Each of the ten lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The second lens element has positive refractive power. The image-side surface of the tenth lens element is concave in a paraxial region thereof, and the image-side surface of the tenth lens element has at least one inflection point.

First claim

What is claimed is:

1 . An optical imaging lens system comprising ten lens elements, the ten lens elements being, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, an eighth lens element, a ninth lens element and a tenth lens element, and each of the ten lens elements having an object-side surface facing toward the object side and an image-side surface facing toward the image side;
wherein the object-side surface of the fifth lens element is concave in a paraxial region thereof, and the image-side surface of the tenth lens element has at least one inflection point; wherein an absolute value of a curvature radius of the object-side surface of the fourth lens element is larger than an absolute value of a curvature radius of the object-side surface of the fifth lens element, a central thickness of the first lens element is larger than a central thickness of the third lens element, and a central thickness of the seventh lens element is larger than the central thickness of the third lens element; wherein an Abbe number of the second lens element is V2, an Abbe number of the ninth lens element is V9, an Abbe number of the tenth lens element is V10, and the following conditions are satisfied:

28.
<

V
⁢
2

<
60.

;
and

⁢

10.
<

V
⁢
9

+

V
⁢
10

<
105.

2 . The optical imaging lens system of claim 1 , wherein the second lens element has positive refractive power, and the object-side surface of the second lens element is convex in a paraxial region thereof.

3 . The optical imaging lens system of claim 1 , wherein the image-side surface of the first lens element is concave in a paraxial region thereof.

4 . The optical imaging lens system of claim 1 , wherein an axial distance between the third lens element and the fourth lens element is T34, an axial distance between the fourth lens element and the fifth lens element is T45, and the following condition is satisfied:

0
<

T
⁢
34
/
T
⁢
45

<

6.
.

5 . The optical imaging lens system of claim 1 , wherein a focal length of the first lens element is f1, a focal length of the second lens element is f2, and the following condition is satisfied:

0
<

❘
"\[LeftBracketingBar]"

f
⁢
2
/
f
⁢
1

❘
"\[RightBracketingBar]"

<

1.1
.

6 . The optical imaging lens system of claim 1 , wherein a central thickness of the second lens element is CT2, the central thickness of the third lens element is CT3, and the following condition is satisfied:

1.2
<

CT
⁢
2
/
CT
⁢
3

<

5.
.

7 . The optical imaging lens system of claim 1 , wherein an axial distance between the seventh lens element and the eighth lens element is T78, an axial distance between the ninth lens element and the tenth lens element is T910, a central thickness of the tenth lens element is CT10, and the following condition is satisfied:

0.3
<

(

T
⁢
78

+

T
⁢
910

)

/
CT
⁢
10

<

2.5
.

8 . The optical imaging lens system of claim 1 , wherein a minimum value among Abbe numbers of all lens elements of the optical imaging lens system is Vmin, and the following condition is satisfied:

5.
<

V
⁢
min

<

21.
.

9 . The optical imaging lens system of claim 1 , wherein an absolute value of a curvature radius of the object-side surface of the third lens element is larger than an absolute value of a curvature radius of the object-side surface of the first lens element.

10 . The optical imaging lens system of claim 1 , wherein a curvature radius of the image-side surface of the third lens element and a curvature radius of the image-side surface of the seventh lens element have a same sign, and a curvature radius of the object-side surface of the sixth lens element and a curvature radius of the object-side surface of the ninth lens element have different signs.

11 . An image capturing unit, comprising:
the optical imaging lens system of claim 1 ; and an image sensor disposed on an image surface of the optical imaging lens system.

12 . An electronic device, comprising at least two image capturing units disposed on same side of the electronic device, and the at least two image capturing units comprising:
a first image capturing unit, comprising the optical imaging lens system of claim 1 and an image sensor disposed on an image surface of the optical imaging lens system; and a second image capturing unit, comprising an optical lens assembly and an image sensor disposed on an image surface of the optical lens assembly; wherein a maximum field of view of the first image capturing unit and a maximum field of view of the second image capturing unit differ by at least 30 degrees.

Assignees

• Largan Precision Co Ltd

Inventors

• Tseng Yu-Tai
• Huang Hsin-Hsuan
• Cho Meng-Kuan

Classifications

• G02B9/64

  having more than six components · 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