Optical imaging system, image capturing unit and electronic device

Patent metadata

Field	Value
Publication number	US-2025264696-A1
Application number	US-202519200812-A
Country	US
Kind code	A1
Filing date	May 7, 2025
Priority date	Feb 3, 2021
Publication date	Aug 21, 2025
Grant date	—

Abstract

An optical imaging 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 negative refractive power. The tenth lens element has negative refractive power, and at least one of the object-side surface 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 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 has an object-side surface facing toward the object side and an image-side surface facing toward the image side;
wherein the first lens element has positive refractive power, the second lens element has negative refractive power, the object-side surface of the third 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 ninth lens element has positive refractive power, the image-side surface of the ninth lens element is concave in a paraxial region thereof, the tenth lens element has negative refractive power, and at least one of the object-side surface and the image-side surface of the tenth lens element has at least one inflection point.

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

3 . The optical imaging system of claim 1 , wherein a curvature radius of the image-side surface of the ninth lens element is R18, a curvature radius of the object-side surface of the tenth lens element is R19, and the following condition is satisfied:

-
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R
⁢
18

+

R
⁢
19

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18

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.

4 . The optical imaging system of claim 1 , wherein an Abbe number of the first lens element is V1, 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, an Abbe number of the sixth lens element is V6, an Abbe number of the seventh lens element is V7, an Abbe number of the eighth lens element is V8, an Abbe number of the ninth lens element is V9, an Abbe number of the tenth lens element is V10, an Abbe number of the i-th lens element is Vi, a refractive index of the first lens element is N1, a refractive index of the second lens element is N2, a refractive index of the third lens element is N3, a refractive index of the fourth lens element is N4, a refractive index of the fifth lens element is N5, a refractive index of the sixth lens element is N6, a refractive index of the seventh lens element is N7, a refractive index of the eighth lens element is N8, a refractive index of the ninth lens element is N9, a refractive index of the tenth lens element is N10, a refractive index of the i-th lens element is Ni, a minimum value of Vi/Ni is (Vi/Ni)min, and the following condition is satisfied:

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(

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min

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11.8

,

wherein
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or

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5 . The optical imaging system of claim 1 , wherein a focal length of the optical imaging system is f, a focal length of the third lens element is f3, a focal length of the fifth lens element is f5, a focal length of the sixth lens element is f6, a focal length of the seventh lens element is f7, a focal length of the eighth lens element is f8, and the following condition is satisfied:

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Assignees

• Largan Precision Co Ltd

Inventors

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

Classifications

• G02B9/64 Primary

  having more than six components · CPC title

• G02B13/0045 Primary

  having five or more lenses · 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