公开(公告)号：US20220214522A1

公开(公告)日：2022-07-07

申请号：US17695735

申请日：2022-03-15

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Yen CHEN ,  Kuan-Ting YEH ,  Tzu-Chieh KUO

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

Abstract: A photographing optical system 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 eight lens elements each have an object-side surface facing toward the object side and an image-side surface facing toward the image side. The first lens element has positive refractive power. The fifth lens element has positive refractive power. The object-side surface of the seventh lens element is convex in a paraxial region thereof. The image-side surface of the eighth lens element is concave in a paraxial region thereof. At least one lens surface of at least one lens element of the photographing optical system has at least one critical point in an off-axis region thereof.

公开(公告)号：US20210157092A1

公开(公告)日：2021-05-27

申请号：US16734132

申请日：2020-01-03

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Yen CHEN ,  Kuan-Ting YEH ,  Tzu-Chieh KUO

IPC: G02B13/00 ,  G02B15/14 ,  G02B27/00

Abstract: A photographing optical system 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 eight lens elements each have an object-side surface facing toward the object side and an image-side surface facing toward the image side. The first lens element has positive refractive power. The fifth lens element has positive refractive power. The object-side surface of the seventh lens element is convex in a paraxial region thereof. The image-side surface of the eighth lens element is concave in a paraxial region thereof. At least one lens surface of at least one lens element of the photographing optical system has at least one critical point in an off-axis region thereof.

公开(公告)号：US20200319429A1

公开(公告)日：2020-10-08

申请号：US16906000

申请日：2020-06-19

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Yen CHEN

IPC: G02B13/00 ,  G02B27/64

Abstract: An optical photographing assembly includes, in order from an object side to an image side along an optical axis, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element has positive refractive power. The third lens element has at least one of an object-side surface and an image-side surface being aspheric. The fourth lens element has at least one of an object-side surface and an image-side surface being aspheric. The fifth lens element has at least one of an object-side surface and an image-side surface being aspheric, wherein at least one of the object-side surface and the image-side surface of the fifth lens element includes at least one inflection point.

公开(公告)号：US20190033604A1

公开(公告)日：2019-01-31

申请号：US15868075

申请日：2018-01-11

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Yen CHEN ,  Shu-Yun YANG

IPC: G02B27/09 ,  G02B13/16 ,  G02B13/18 ,  G02B9/60 ,  G02B1/04 ,  G03B15/02 ,  G02B27/42 ,  G02B9/34

Abstract: A projection lens system having a magnification side and a reduction side, which projects light from a conjugation surface on the reduction side onto a conjugation surface on the magnification side. The projection lens system includes a focus tunable component and a lens assembly, wherein the lens assembly includes a plurality of lens elements, and at least one surface of at least one of the lens elements includes at least one inflection point.

公开(公告)号：US20180188496A1

公开(公告)日：2018-07-05

申请号：US15677126

申请日：2017-08-15

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Tung-Yi HSIEH ,  Cheng-Chen LIN ,  Chun-Che HSUEH ,  Chun-Yen CHEN ,  Hsin-Hsuan HUANG

IPC: G02B13/00 ,  G02B9/62

CPC classification number: G02B13/0045 ,  G02B9/62

Abstract: An image capturing 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 positive refractive power. The fourth lens element with positive refractive power has an image-side surface being convex. The fifth lens element has an image-side surface being concave. The sixth lens element has an image-side surface being concave, wherein the image-side surface of the sixth lens element includes at least one inflection point.

公开(公告)号：US20180095251A1

公开(公告)日：2018-04-05

申请号：US15827233

申请日：2017-11-30

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Dung-Yi HSIEH ,  Chun-Yen CHEN ,  Chun-Che HSUEH ,  Hsin-Hsuan HUANG

IPC: G02B13/00 ,  G02B9/60

CPC classification number: G02B13/0045 ,  G02B9/60

Abstract: An optical photographing 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 and a fifth 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 second lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. The third lens element has two surfaces being both aspheric. The fourth lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof, wherein two surfaces thereof are aspheric. The fifth lens element has an image-side surface being convex in a paraxial region thereof, wherein two surfaces thereof are aspheric.

公开(公告)号：US20170307851A1

公开(公告)日：2017-10-26

申请号：US15186362

申请日：2016-06-17

Applicant: LARGAN PRECISION CO.,LTD.

Inventor： Chun-Yen CHEN ,  Shu-Yun YANG

IPC: G02B13/00 ,  G02B9/62 ,  G02B9/60 ,  G02B1/04

CPC classification number: G02B13/0045 ,  G02B1/041 ,  G02B9/60 ,  G02B9/62 ,  G02B13/006 ,  G02B13/06

Abstract: An imaging optical 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 has negative refractive power. The second lens element has negative refractive power. The third lens element has negative refractive power. The imaging optical lens assembly has a total of six lens elements.

公开(公告)号：US20220404584A1

公开(公告)日：2022-12-22

申请号：US17382049

申请日：2021-07-21

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Yi-Hsiang CHUANG ,  Kuan Chun WANG ,  Chun-Yen CHEN ,  Kuan-Ting YEH ,  Yu-Chun KE ,  Tzu-Chieh KUO

IPC: G02B13/00 ,  G02B9/62 ,  G02B27/00 ,  G02B13/02

Abstract: An optical imaging system includes six 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 and a sixth lens element. Each of the six lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The first lens element has negative refractive power, and the object-side surface of the first lens element is concave in a paraxial region thereof. The image-side surface of the second lens element is concave in a paraxial region thereof. The fourth lens element has negative refractive power. The image-side surface of the sixth lens element is concave in a paraxial region thereof and has at least one critical point in an off-axis region thereof.

公开(公告)号：US20210141193A1

公开(公告)日：2021-05-13

申请号：US17125769

申请日：2020-12-17

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Yen CHEN ,  Shu-Yun YANG

IPC: G02B13/00 ,  G02B13/18 ,  G02B13/14 ,  G02B9/34

Abstract: An electronic device includes a lens system including four lens elements. the four lens elements are, in order from an outer side to an inner side, a first lens element, a second lens element, a third lens element and a fourth lens element. The second lens element has negative refractive power. The fourth lens element has positive refractive power. At least one surface of the four lens elements has at least one inflection point. A projection device and a detecting module of the electronic device including the lens system are also disclosed.

公开(公告)号：US20200174228A1

公开(公告)日：2020-06-04

申请号：US16779751

申请日：2020-02-03

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Yen CHEN ,  Chun-Che HSUEH ,  Wei-Yu CHEN

IPC: G02B13/00 ,  G02B13/18 ,  G02B7/09 ,  G02B9/64

Abstract: An image capturing 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. The fifth lens element with positive refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The sixth lens element 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 object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, and the image-side surface thereof includes at least one convex shape in an off-axis region thereof.