Photographing optical lens assembly, image capturing unit and electronic device

Patent metadata

Field	Value
Publication number	US-2026036783-A1
Application number	US-202519354910-A
Country	US
Kind code	A1
Filing date	Oct 10, 2025
Priority date	Apr 15, 2022
Publication date	Feb 5, 2026
Grant date	—

Abstract

A photographing optical lens assembly includes five 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 and a fifth lens element. Each of the five lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The image-side surface of the second lens element is concave in a paraxial region thereof. The third lens element has negative refractive power. The fourth lens element has positive refractive power. The object-side surface of the fifth lens element is convex in a paraxial region thereof, the image-side surface of the fifth lens element is concave in a paraxial region thereof, and the image-side surface of the fifth lens element has at least one inflection point.

First claim

What is claimed is:

1 . A photographing optical lens assembly comprising five lens elements, the five 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 and a fifth lens element, and each of the five lens elements having an object-side surface facing toward the object side and an image-side surface facing toward the image side;
wherein the second lens element has negative refractive power, the object-side surface of the third lens element is concave in a paraxial region thereof, the fourth lens element has positive refractive power, the image-side surface of the fourth lens element is concave in a paraxial region thereof, the fifth lens element has negative refractive power, the object-side surface of the fifth lens element is convex in a paraxial region thereof, and the image-side surface of the fifth lens element has at least one inflection point; wherein a central thickness of the first lens element is CT1, a central thickness of the second lens element is CT2, a central thickness of the third lens element is CT3, an axial distance between the third lens element and the fourth lens element is T34, a curvature radius of the object-side surface of the third lens element is R5, a curvature radius of the image-side surface of the third lens element is R6, and the following conditions are satisfied:

2.6
<

CT
⁢
1
/
T
⁢
34

≤
7.1

;

1.2
<

CT
⁢
3
/
CT
⁢
2

<
5.

;
and

-
12.

<

(

R
⁢
5

+

R
⁢
6

)

/

(

R
⁢
5

-

R
⁢
6

)

<

0.
.

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

3 . The photographing optical lens assembly of claim 1 , wherein a curvature radius of the object-side surface of the fourth lens element is R7, a curvature radius of the image-side surface of the fourth lens element is R8, and the following condition is satisfied:

-
1.2

<

(

R
⁢
7

-

R
⁢
8

)

/

(

R
⁢
7

+

R
⁢
8

)

<

0
.
4

⁢

0
.

4 . The photographing optical lens assembly of claim 1 , wherein an f-number of the photographing optical lens assembly is Fno, and the following condition is satisfied:

1.
60

<
Fno
<

2.6
.

5 . The photographing optical lens assembly of claim 1 , wherein a focal length of the photographing optical lens assembly is f, a curvature radius of the image-side surface of the fourth lens element is R8, and the following condition is satisfied:

-

0
.
1

⁢
0

<

f
/
R

⁢
8

<

5
.
8

⁢

0
.

6 . The photographing optical lens assembly of claim 1 , wherein the central thickness of the first lens element is CT1, a central thickness of the fourth lens element is CT4, and the following condition is satisfied:

1.

5
⁢
0

<

C
⁢
T
⁢

Assignees

• Largan Precision Co Ltd

Inventors

• Tseng Yu-Tai
• Cho Meng-Kuan
• Chen I-Hsuan

Classifications

• G02B9/60 Primary

  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

• G03B30/00

  Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles · CPC title

• G02B13/06

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

• G02B13/0065

  having a beam-folding prism or mirror · CPC title