公开(公告)号：US20230213733A1

公开(公告)日：2023-07-06

申请号：US18184056

申请日：2023-03-15

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Hung-Shuo CHEN ,  Chien-Hsun WU ,  Tzu-Chieh KUO

IPC: G02B9/58 ,  G02B13/00

CPC classification number: G02B9/58 ,  G02B13/004 ,  H04N23/20

Abstract: An electronic device includes at least one optical lens assembly. The optical lens assembly includes four lens elements, and the four lens elements are, in order from an outside to an inside, a first lens element, a second lens element, a third lens element and a fourth lens element. The first lens element has an outside surface being convex in a paraxial region thereof. The second lens element has an inside surface being convex in a paraxial region thereof. The fourth lens element has an inside surface being concave in a paraxial region thereof, wherein at least one of an outside surface and the inside surface of the fourth lens element includes at least one critical point in an off-axis region thereof.

公开(公告)号：US20230019613A1

公开(公告)日：2023-01-19

申请号：US17934614

申请日：2022-09-23

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chien-Hsun WU ,  Lin-An CHANG ,  Ming-Ta CHOU

IPC: G02B7/02

Abstract: An imaging lens module includes a plastic lens barrel, a first optical element assembly and a second optical element assembly, wherein both of the first optical element assembly and the second optical element assembly are disposed in the plastic lens barrel. The plastic lens barrel includes a first inner annular surface and a second inner annular surface. The first inner annular surface forms a first receiving space. The second inner annular surface forms a second receiving space. The first optical element assembly is disposed in the first receiving space and includes a plurality of optical lens elements and a first retainer. The second optical element assembly is disposed in the second receiving space and includes a first light blocking sheet and a second retainer.

公开(公告)号：US20200150402A1

公开(公告)日：2020-05-14

申请号：US16746861

申请日：2020-01-18

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuan-Ting YEH ,  Hung-Shuo CHEN ,  Chien-Hsun WU ,  Wei-Yu CHEN

IPC: G02B13/00 ,  G02B27/00 ,  G02B9/60 ,  G02B13/18

Abstract: An imaging lens system includes five lens elements, which are, in order from an object side to an image side: a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. At least one of an object-side surface and an image-side surface of the fifth lens element has at least one inflection point. The object-side surface and the image-side surface of the fifth lens element are both aspheric.

公开(公告)号：US20180321467A1

公开(公告)日：2018-11-08

申请号：US15857924

申请日：2017-12-29

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chien-Hsun WU ,  Shu-Yun YANG

IPC: G02B9/62 ,  G02B13/18 ,  G02B27/00

CPC classification number: G02B9/62 ,  G02B13/0045 ,  G02B13/04 ,  G02B13/18 ,  G02B13/22 ,  G02B27/0025

Abstract: An imaging lens assembly includes six lens elements, the six lens elements being, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element has negative refractive power. The second lens element has positive refractive power. The fifth lens element has positive refractive power.

公开(公告)号：US20240295681A1

公开(公告)日：2024-09-05

申请号：US18229114

申请日：2023-08-01

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Yu Chen LAI ,  Chien-Hsun WU ,  Ming-Ta CHOU ,  Wen-Yu TSAI

IPC: G02B5/20 ,  G02B5/22 ,  G02B7/02 ,  H04N23/55

CPC classification number: G02B5/208 ,  G02B5/22 ,  G02B7/021 ,  H04N23/55

Abstract: An imaging lens includes a central optical path, a plurality of lens elements sequentially arranged along the central optical path, a wide-range low reflection layer, and an infrared light reduction layer. The plurality of lens elements include a first lens element. The wide-range low reflection layer is disposed on an object-side surface of the first lens element, and the average reflectance of the wide-range low reflection layer to light with a wavelength ranging from 750 to 1050 nanometers is less than or equal to 0.98%. The infrared light reduction layer is located closer to an image side than the wide-range low reflection layer, and the average reflectance of the infrared light reduction layer to light with a wavelength ranging from 750 to 1050 nanometers is greater than or equal to 50%. The central optical path passes through a paraxial region of the first lens element.

公开(公告)号：US20220003961A1

公开(公告)日：2022-01-06

申请号：US17475420

申请日：2021-09-15

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Hung-Shuo CHEN ,  Chien-Hsun WU ,  Tzu-Chieh KUO

IPC: G02B9/34 ,  G02B13/14 ,  G02B13/00

Abstract: An electronic device includes at least one optical lens assembly. The optical lens assembly includes four lens elements, and the four lens elements are, in order from an outside to an inside, a first lens element, a second lens element, a third lens element and a fourth lens element. The first lens element has an outside surface being convex in a paraxial region thereof. The second lens element has an inside surface being convex in a paraxial region thereof. The fourth lens element has an inside surface being concave in a paraxial region thereof, wherein at least one of an outside surface and the inside surface of the fourth lens element includes at least one critical point in an off-axis region thereof.

公开(公告)号：US20200341228A1

公开(公告)日：2020-10-29

申请号：US16812507

申请日：2020-03-09

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chien-Hsun WU ,  Lin-An CHANG ,  Ming-Ta CHOU

IPC: G02B7/02

Abstract: An imaging lens module has an optical axis, an object side and an image side. The imaging lens module includes a plastic barrel, an optical lens assembly, an image-side assembled element and a light blocking element assembly. The plastic barrel includes a first contacting surface, which is close to an image-side end of the plastic barrel. The image-side assembled element is disposed close to the image-side end of the plastic barrel. The image-side assembled element is in a tube shape and extends from the object side to the image side. The image-side assembled element includes a second contacting surface and an inner protruding portion, and the second contacting surface is disposed close to an object-side end of the image-side assembled element and correspondingly to the first contacting surface. The plastic barrel and the image-side assembled element contact each other via the first contacting surface and the second contacting surface.

公开(公告)号：US20200310074A1

公开(公告)日：2020-10-01

申请号：US16780967

申请日：2020-02-04

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chien-Hsun WU ,  Lin-An CHANG ,  Ming-Ta CHOU

IPC: G02B7/02 ,  G03B17/12

Abstract: An imaging lens module includes a plastic lens barrel, a first optical element assembly and a second optical element assembly, wherein both of the first optical element assembly and the second optical element assembly are disposed in the plastic lens barrel. The plastic lens barrel includes a first inner annular surface and a second inner annular surface. The first inner annular surface forms a first receiving space. The second inner annular surface forms a second receiving space. The first optical element assembly is disposed in the first receiving space and includes a plurality of optical lens elements and a first retainer. The second optical element assembly is disposed in the second receiving space and includes a first light blocking sheet and a second retainer.

公开(公告)号：US20200218033A1

公开(公告)日：2020-07-09

申请号：US16819276

申请日：2020-03-16

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Hung-Shuo CHEN ,  Chien-Hsun WU ,  Tzu-Chieh KUO

IPC: G02B9/34 ,  G02B13/14 ,  H04N5/33 ,  G01B11/24 ,  H04N13/225 ,  H04N13/254 ,  G02B13/00

Abstract: An electronic device includes at least one optical lens assembly. The optical lens assembly includes four lens elements, and the four lens elements are, in order from an outside to an inside, a first lens element, a second lens element, a third lens element and a fourth lens element. The first lens element has an outside surface being convex in a paraxial region thereof. The second lens element has an inside surface being convex in a paraxial region thereof. The fourth lens element has an inside surface being concave in a paraxial region thereof, wherein at least one of an outside surface and the inside surface of the fourth lens element includes at least one critical point in an off-axis region thereof.

公开(公告)号：US20190101724A1

公开(公告)日：2019-04-04

申请号：US15869314

申请日：2018-01-12

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Hung-Shuo CHEN ,  Chien-Hsun WU ,  Tzu-Chieh KUO

IPC: G02B9/34 ,  G02B13/14 ,  G01B11/24 ,  H04N5/33

Abstract: An electronic device includes at least one optical lens assembly. The optical lens assembly includes four lens elements, and the four lens elements are, in order from an outside to an inside, a first lens element, a second lens element, a third lens element and a fourth lens element. The first lens element has an outside surface being convex in a paraxial region thereof. The second lens element has an inside surface being convex in a paraxial region thereof. The fourth lens element has an inside surface being concave in a paraxial region thereof, wherein at least one of an outside surface and the inside surface of the fourth lens element includes at least one critical point in an off-axis region thereof.