US 2025/0147274 A1Published application

Optical imaging lens assembly, imaging apparatus and electronic device

AssigneeLargan Precision Co., Ltd.

InventorsCHUN-CHE HSUEH, Tzu-Chieh Kuo

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Abstract

An optical imaging lens assembly from an object side to an image side includes 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 the object side and an image-side surface facing the image side. The image-side surface of the first lens element is concave in a paraxial region thereof. The object-side surface of the fourth lens element is convex in a paraxial region thereof. The object-side surface of the fifth lens element is concave in a paraxial region thereof. At least one of the object-side surface and image-side surface of at least one of the first through fifth lens elements has at least one inflection point in an off-axis region thereof. An f-number of the optical imaging lens assembly is Fno, satisfying 1.5<Fno<2.0.

Claims25

Dependent claims

An optical imaging 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, each of the first through fifth lens elements having an object-side surface facing the object side and an image-side surface facing the image side;
wherein the first lens element has negative refractive power, the image-side surface of the first lens element is concave in a paraxial region thereof, the object-side surface of the second lens element is convex in a paraxial region thereof, the image-side surface of the third lens element is concave in a paraxial region thereof, the object-side surface of the fourth lens element is convex in a paraxial region thereof, the object-side surface of the fifth lens element is concave in a paraxial region thereof, and at least one of the object-side surface and the image-side surface of at least one of the first through fifth lens elements has at least one inflection point in an off-axis region thereof;
wherein an f-number of the optical imaging lens assembly is Fno, an Abbe number of the second lens element is V2, an Abbe number of the third lens element is V3, an Abbe number of the fourth lens element is V4, an Abbe number of the fifth lens element is V5, a central thickness of the fourth lens element along the optical path is CT4, an axial distance between the fourth lens element and the fifth lens element is T45, and the following conditions are satisfied:
1.5
<
Fno
<
2.
;
1.8
<
(
V
⁢
2
+
V
⁢
4
)
/
(
V
⁢
3
+
V
⁢
5
)
<
4.
;
and
0.25
<
CT
⁢
4
/
T
⁢
45
<
5
.
5
.

45 more elements

An optical imaging 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, each of the first through fifth lens elements having an object-side surface facing the object side and an image-side surface facing the image side;
wherein the first lens element has negative refractive power, the image-side surface of the first lens element is concave in a paraxial region thereof, the image-side surface of the third lens element is concave in a paraxial region thereof, the object-side surface of the fourth lens element is convex in a paraxial region thereof, the object-side surface of the fifth lens element is concave in a paraxial region thereof, and at least one of the object-side surface and the image-side surface of at least one of the first through fifth lens elements has at least one inflection point in an off-axis region thereof;
wherein an f-number of the optical imaging lens assembly is Fno, an Abbe number of the second lens element is V2, an Abbe number of the third lens element is V3, an Abbe number of the fourth lens element is V4, an Abbe number of the fifth lens element is V5, a central thickness of the fourth lens element along the optical path is CT4, a central thickness of the fifth lens element along the optical path is CT5, an axial distance between the fourth lens element and the fifth lens element is T45, and the following conditions are satisfied:
1.5
<
Fno
<
2.
;
1.8
<
(
V
⁢
2
+
V
⁢
4
)
/
(
V
⁢
3
+
V
⁢
5
)
<
4.
;
and
1.1
<
(
CT
⁢
4
+
CT
⁢
5
)
/
T
⁢
45
<
7
.
3
.

51 more elements

An optical imaging 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, each of the first through fifth lens elements having an object-side surface facing the object side and an image-side surface facing the image side;
wherein the image-side surface of the first lens element is concave in a paraxial region thereof, the second lens element has positive refractive power, the object-side surface of the second lens element is convex in a paraxial region thereof, the third lens element has negative refractive power, the object-side surface of the fourth lens element is convex in a paraxial region thereof, the object-side surface of the fifth lens element is concave in a paraxial region thereof, and at least one of the object-side surface and the image-side surface of at least one of the first through fifth lens elements has at least one inflection point in an off-axis region thereof;
wherein an f-number of the optical imaging lens assembly is Fno, an Abbe number of the fourth lens element is V4, an Abbe number of the fifth lens element is V5, a central thickness of the fourth lens element along the optical path is CT4, an axial distance between the fourth lens element and the fifth lens element is T45, and the following conditions are satisfied:
1.5
<
Fno
<
2.
;
1.5
<
V
⁢
4
/
V
⁢
5
<
4.
;
and
0.65
<
CT
⁢
4
/
T
⁢
45
<
4
.
3
.

33 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/595,576Filed 5 Mar 2024
Priority: TW 1121421442 Nov 2023
Published: 8 May 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

G02B 9/60
Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -: having five…
G02B 13/0045
Having at least one aspherical surface: having five or more lenses
G02B 13/18
Optical objectives specially designed for the purposes specified below: with lenses having one or more non-spherical faces, e.g. for reducing…
H04N 23/55
Constructional details: optical parts specially adapted for electronic image sensors; Mounting thereof

Family

US 12,699,252 B2Related patent
US 2025/0147274 A1This patent

From the US filing history. Foreign family members aren’t listed.

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