公开(公告)号：US20210356699A1

公开(公告)日：2021-11-18

申请号：US17388597

申请日：2021-07-29

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Cheng-Chen LIN ,  Yu-Tai TSENG ,  Wei-Yu CHEN

IPC: G02B9/64 ,  G02B13/00

Abstract: A photographing lens assembly includes eight 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, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof. The sixth lens element has an image-side surface being concave in a paraxial region thereof. The seventh lens element has an image-side surface being concave in a paraxial region thereof. The eighth lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof, and the image-side surface of the eighth lens element has at least one critical point in an off-axis region thereof.

公开(公告)号：US20210341710A1

公开(公告)日：2021-11-04

申请号：US17373745

申请日：2021-07-12

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Yen CHEN ,  Cheng-Chen LIN ,  Hsin-Hsuan HUANG

IPC: G02B13/00 ,  G02B13/04 ,  G02B9/62

Abstract: A photographing lens assembly includes six 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, a fifth lens element and a sixth lens element. The second lens element has positive refractive power. The third lens element has an image-side surface being concave in a paraxial region thereof. The sixth lens element has an image-side surface being concave in a paraxial region thereof, and the image-side surface of the sixth lens element has at least one inflection point.

公开(公告)号：US20210199933A1

公开(公告)日：2021-07-01

申请号：US16838772

申请日：2020-04-02

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuo-Jui WANG ,  Cheng-Chen LIN ,  Wei-Yu CHEN

IPC: G02B13/18 ,  G02B9/64

Abstract: A photographing optical lens assembly includes seven 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 and a seventh lens element. The first lens element has negative refractive power. The third lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fifth lens element has an object-side surface being concave in a paraxial region thereof. The sixth lens element has an object-side surface being convex in a paraxial region thereof. The seventh lens element has an image-side surface being concave in a paraxial region thereof and having at least one convex critical point in an off-axis region thereof.

公开(公告)号：US20210141234A1

公开(公告)日：2021-05-13

申请号：US17153955

申请日：2021-01-21

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Hsiang-Chi TANG ,  Cheng-Chen LIN ,  Ming-Ta CHOU

IPC: G02B27/09 ,  G02B9/34 ,  H04N5/225 ,  G02B7/02 ,  G02B13/00 ,  G02B9/60

Abstract: An imaging lens assembly includes a plastic barrel and an imaging lens set. The plastic barrel includes an object-side aperture and a first annular surface. The imaging lens set includes a plurality of optical elements, wherein at least one of the optical elements is a plastic lens element, and the plastic lens element includes an effective optical portion, a peripheral portion, a second annular surface, and an object-side connecting surface. The peripheral portion is formed around the effective optical portion. The second annular surface is formed on an object-side surface of the plastic lens element and surrounds the effective optical portion. The object-side connecting surface is formed on the object-side surface of the plastic lens element and surrounds the effective optical portion, and the object-side connecting surface is connected with one of the optical elements disposed on an object side of the plastic lens element.

公开(公告)号：US20210096333A1

公开(公告)日：2021-04-01

申请号：US17118435

申请日：2020-12-10

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Cheng-Chen LIN ,  Yu-Tai TSENG ,  Tzu-Chieh KUO

IPC: G02B13/00 ,  G02B27/00 ,  G02B9/64 ,  G02B13/18

Abstract: An optical photographing lens assembly includes seven 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, a fifth lens element, a sixth lens element and a seventh lens element. Each of the seven lens elements of the optical photographing lens assembly has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The object-side surface of the first lens element is concave in a paraxial region thereof. The object-side surface of the first lens element is aspheric and has at least one critical point in an off-axis region thereof.

公开(公告)号：US20200285030A1

公开(公告)日：2020-09-10

申请号：US16880858

申请日：2020-05-21

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Hsiang-Chi TANG ,  Cheng-Chen LIN ,  Chun-Yen CHEN ,  Yu-Tai TSENG ,  Wei-Yu CHEN

IPC: G02B13/00 ,  G02B9/64

Abstract: An imaging lens assembly includes, 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, a sixth lens element and a seventh lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The seventh lens element has an image-side surface being concave in a paraxial region thereof. The image-side surface of the seventh lens element has at least one convex shape in an off-axis region thereof. An object-side surface and the image-side surface of the seventh lens element are aspheric. At least one of an image-side surface of the fourth lens element and an image-side surface of the fifth lens element has at least one inflection point.

公开(公告)号：US20190227278A1

公开(公告)日：2019-07-25

申请号：US16046483

申请日：2018-07-26

Applicant: LARGAN PRECISION CO.,LTD.

Inventor： Chun-Yen CHEN ,  Cheng-Chen LIN ,  Hsin-Hsuan HUANG

IPC: G02B13/00 ,  G02B9/62 ,  G02B13/04

Abstract: A photographing lens assembly includes six 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, a fifth lens element and a sixth lens element. The second lens element has positive refractive power. The third lens element has an image-side surface being concave in a paraxial region thereof. The sixth lens element has an image-side surface being concave in a paraxial region thereof, and the image-side surface of the sixth lens element has at least one inflection point.

公开(公告)号：US20190025600A1

公开(公告)日：2019-01-24

申请号：US15922037

申请日：2018-03-15

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Hsiang-Chi TANG ,  Cheng-Chen LIN ,  Ming-Ta CHOU

IPC: G02B27/09 ,  H04N5/225 ,  G02B9/34

Abstract: An imaging lens assembly includes a plastic barrel and an imaging lens set. The plastic barrel includes an object-side aperture and a first annular surface. The imaging lens set includes a plurality of optical elements, wherein at least one of the optical elements is a plastic lens element, and the plastic lens element includes an effective optical portion, a peripheral portion, a second annular surface, and an object-side connecting surface. The peripheral portion is formed around the effective optical portion. The second annular surface is formed on an object-side surface of the plastic lens element and surrounds the effective optical portion. The object-side connecting surface is formed on the object-side surface of the plastic lens element and surrounds the effective optical portion, and the object-side connecting surface is connected with one of the optical elements disposed on an object side of the plastic lens element.

公开(公告)号：US20180129024A1

公开(公告)日：2018-05-10

申请号：US15861484

申请日：2018-01-03

Applicant: LARGAN PRECISION CO.,LTD.

Inventor： Cheng-Chen LIN ,  Wei-Yu CHEN

IPC: G02B13/00 ,  G02B9/62

CPC classification number: G02B13/0045 ,  G02B9/62 ,  G02B13/04 ,  H04N5/23296

Abstract: An image capturing lens assembly includes, 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 with negative refractive power has an image-side surface being concave in a paraxial region thereof. The second and third lens elements have refractive power. The fourth lens element has positive refractive power. The fifth lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof. The sixth lens element with refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The image capturing lens assembly has a total of six lens elements with refractive power.

公开(公告)号：US20180095244A1

公开(公告)日：2018-04-05

申请号：US15427659

申请日：2017-02-08

Applicant: LARGAN Precision Co., Ltd.

Inventor： Cheng-Chen LIN ,  Shu-Yun YANG

IPC: G02B13/00 ,  G02B9/34

CPC classification number: G02B13/004 ,  G02B3/04 ,  G02B9/34 ,  G02B13/0065

Abstract: An optical imaging lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element and a fourth lens element. The first lens element has positive refractive power. The second lens element has negative refractive power. The fourth lens element has an object-side surface being concave in a paraxial region thereof, wherein at least one of the object-side surface and an image-side surface of the fourth lens element has at least one inflection point. The optical imaging lens system has a total of four lens elements.