公开(公告)号：US20240077657A1

公开(公告)日：2024-03-07

申请号：US18507179

申请日：2023-11-13

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Wen-Yu TSAI ,  Heng-Yi SU ,  Ming-Ta CHOU ,  Chien-Pang CHANG ,  Kuo-Chiang CHU

IPC: G02B5/00 ,  G02B13/18

CPC classification number: G02B5/003 ,  G02B13/18 ,  G02B2207/101 ,  G02B2207/107

Abstract: An imaging lens assembly includes a first optical element and a low-reflection layer. The first optical element has a central opening, and includes a first surface, a second surface and a first outer diameter surface. The first outer diameter surface is connected to the first surface and the second surface. The low-reflection layer is located on at least one of the first surface and the second surface, and includes a carbon black layer, a nano-microstructure and a coating layer. The nano-microstructure is directly contacted with and connected to the carbon black layer, and the nano-microstructure is farther from the first optical element than the carbon black layer from the first optical element. The coating layer is directly contacted with and connected to the nano-microstructure, and the coating layer is farther from the first optical element than the nano-microstructure from the first optical element.

公开(公告)号：US20240077656A1

公开(公告)日：2024-03-07

申请号：US18507164

申请日：2023-11-13

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Wen-Yu TSAI ,  Heng-Yi SU ,  Ming-Ta CHOU ,  Chien-Pang CHANG ,  Kuo-Chiang CHU

IPC: G02B5/00 ,  G02B13/18

CPC classification number: G02B5/003 ,  G02B13/18 ,  G02B2207/101 ,  G02B2207/107

Abstract: An imaging lens assembly includes a first optical element and a low-reflection layer. The first optical element has a central opening, and includes a first surface, a second surface and a first outer diameter surface. The first outer diameter surface is connected to the first surface and the second surface. The low-reflection layer is located on at least one of the first surface and the second surface, and includes a carbon black layer, a nano-microstructure and a coating layer. The nano-microstructure is directly contacted with and connected to the carbon black layer, and the nano-microstructure is farther from the first optical element than the carbon black layer from the first optical element. The coating layer is directly contacted with and connected to the nano-microstructure, and the coating layer is farther from the first optical element than the nano-microstructure from the first optical element.

公开(公告)号：US20240036287A1

公开(公告)日：2024-02-01

申请号：US18378456

申请日：2023-10-10

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Lin An CHANG ,  Ming-Ta CHOU

IPC: G02B7/02 ,  G02B13/00 ,  H04N23/55

CPC classification number: G02B7/021 ,  G02B13/002 ,  G02B7/022 ,  G02B13/0045 ,  H04N23/55

Abstract: An imaging lens system has an optical axis and includes a plastic lens barrel and an imaging lens assembly disposed in the plastic lens barrel. The plastic lens barrel surrounds the optical axis and includes an object-side surface, an image-side surface, an inner annular portion and an outer annular portion. The object-side and image-side surfaces are oppositely disposed and substantially perpendicular to the optical axis. The inner and outer annular portions are connected to the object-side and image-side surfaces. The inner annular portion has an inner parallel annular surface, and the outer annular portion has a first outer annular surface and a gate trace. The imaging lens assembly includes a plurality of imaging lens elements. One of the imaging lens elements has an outer diameter larger than π2 millimeters. The one of the imaging lens elements has an outer edge in physical contact with the inner parallel annular surface.

公开(公告)号：US20240027880A1

公开(公告)日：2024-01-25

申请号：US18479915

申请日：2023-10-03

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuan-Ming CHEN ,  Hsiang-Chi TANG ,  Lin-An CHANG ,  Cheng-Chen LIN ,  Ming-Ta CHOU

IPC: G03B17/12 ,  H04N23/55 ,  H04N23/68

CPC classification number: G03B17/12 ,  H04N23/55 ,  H04N23/687

Abstract: An imaging lens assembly module has an optical axis, and includes a lens barrel and an optical element set. The lens barrel includes an object-side portion, a tubular portion and a tip-end minimal aperture. The object-side portion includes a first assembling surface. The tubular portion includes a plurality of second assembling surfaces. The optical element set includes at least one light blocking sheet and at least one optical lens element. The light blocking sheet includes an object-side surface, an image-side surface and an inner opening surface. The optical lens element includes an optical effective portion and a peripheral portion. The object-side portion of the lens barrel includes a first reversing inclined surface gradually enlarged from the tip-end minimal aperture to the image side of the lens barrel, and the first reversing inclined surface is not contacted with the optical element set.

公开(公告)号：US20240027739A1

公开(公告)日：2024-01-25

申请号：US18354702

申请日：2023-07-19

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chih-Wen HSU ,  Chen-Wei FAN ,  Ming-Ta CHOU

IPC: G02B13/18 ,  G02B1/11 ,  G02B13/06 ,  G02B5/00

CPC classification number: G02B13/18 ,  G02B1/11 ,  G02B13/06 ,  G02B5/003

Abstract: An imaging lens assembly includes a lens element and a light blocking element. The lens element is configured to define an optical axis, and the optical axis passes through the lens element. The light blocking element includes a light through hole and a plurality of light diminishing structures. The optical axis passes through the light through hole, the light through hole is formed by connecting a plurality of sidelines to define a polygonal contour. The light diminishing structures are regularly disposed along the polygonal contour, wherein the light diminishing structures are configured to undulate at least one portion of each of the sidelines, so that the at least one portion of each of the sidelines is a non-straight line.

公开(公告)号：US20230341746A1

公开(公告)日：2023-10-26

申请号：US17888282

申请日：2022-08-15

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Hao Jan CHEN ,  Yu Chen LAI ,  Ming-Ta CHOU

IPC: G03B9/06

CPC classification number: G03B9/06 ,  G02B9/64

Abstract: An imaging lens with an optical axis includes a lens carrier and a variable through hole assembly. The lens carrier is configured for at least one lens element to be disposed therein, and the lens carrier includes a mount structure. The variable through hole assembly includes a plurality of movable blades and a rotatable element. The movable blades movably and together surround the optical axis to form a through hole, and a size of the through hole is variable by movement of the movable blades. The rotatable element is connected to the movable blades, and the rotatable element moves the movable blades to vary the size of the through hole. At least one of the movable blades and the rotatable element of the variable through hole assembly is disposed on the mount structure.

公开(公告)号：US20230333291A1

公开(公告)日：2023-10-19

申请号：US18337142

申请日：2023-06-19

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Ming-Ta CHOU ,  Ming-Shun CHANG ,  Chih-Wen HSU

IPC: G02B5/00 ,  G02B7/02 ,  G03B9/02 ,  G02B27/09 ,  G02B27/00 ,  G02B7/09 ,  G02B9/08

CPC classification number: G02B5/005 ,  G02B7/021 ,  G03B9/02 ,  G02B27/0988 ,  G02B27/0018 ,  G02B7/09 ,  G02B9/08 ,  G02B5/003 ,  H04N23/54

Abstract: A light blocking sheet having a central axis includes a central hole and a plurality of inner extended portions. The central axis passes through the central hole, which is enclosed by a hole inner surface. The hole inner surface has a first corresponding circle and a second corresponding circle, wherein a diameter of the first corresponding circle is greater than a diameter of the second corresponding circle. The inner extended portions are adjacent to and surround the central hole, wherein each of the inner extended portions is extended and tapered from the first corresponding circle towards the second corresponding circle and includes an inner surface, and the inner surface includes a line pair. The line pair includes two line sections, wherein one end of one line section thereof and one end of the other line section thereof are towards the second corresponding circle and approach to each other.

公开(公告)号：US20230288667A1

公开(公告)日：2023-09-14

申请号：US18200489

申请日：2023-05-22

Applicant: LARGAN PRECISION CO.,LTD.

Inventor： Hsiang-Chi TANG ,  Ming-Ta CHOU

IPC: G02B9/60 ,  G02B13/00 ,  G02B13/18 ,  G02B5/20 ,  G02B27/00

CPC classification number: G02B9/60 ,  G02B5/208 ,  G02B13/0045 ,  G02B13/18 ,  G02B27/0025

Abstract: A photographing optical lens assembly includes five lens elements with refractive power, in order from an object side to an image side. The first lens element with refractive power has a convex object-side surface. The second lens element with positive refractive power has an object-side surface and an image-side surface both being aspheric. The third lens element has positive refractive power. The fourth lens element with refractive power has a concave object-side surface. The fifth lens element with refractive power has an object-side surface and a concave image-side surface with at least one inflection point, both the object-side surface and the image-side surface being aspheric.

公开(公告)号：US20230273351A1

公开(公告)日：2023-08-31

申请号：US18314185

申请日：2023-05-09

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Ming-Ta CHOU

IPC: G02B5/00 ,  G02B7/02 ,  B29D11/00

CPC classification number: G02B5/003 ,  G02B7/021 ,  B29D11/00403 ,  G02B13/004

Abstract: An imaging lens assembly includes a dual molded optical element, a plurality of imaging lens elements and a light blocking element. The dual molded optical element has an object-side surface and an image-side surface and includes a light transmitting portion and a light absorbing portion. The light transmitting portion includes an optical effective section. The light absorbing portion is located on at least one of the object-side surface and the image-side surface of the dual molded optical element, and a plastic material of the light absorbing portion and a plastic material of the light transmitting portion are different colors. The imaging lens elements are disposed in the inner space of the imaging lens assembly. The light blocking element is disposed adjacent to the light transmitting portion of the dual molded optical element.

公开(公告)号：US20230204898A1

公开(公告)日：2023-06-29

申请号：US18146515

申请日：2022-12-27

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Hua TSAI ,  Yu-Chen LAI ,  Ming-Ta CHOU

IPC: G02B7/02 ,  G02B13/00

CPC classification number: G02B7/021 ,  G02B13/0045 ,  G02B7/025

Abstract: A lens assembly having a paraxial path includes a carrier, a plurality of optical elements, a retaining element and a first bonding material. A closed structure is located adjacent to the second end. The closed structure is formed by at least one optical element of the optical elements and the inner annular surface, the at least one optical element is in physical contact with the inner annular surface, and an inside space is closed from an outside air by the closed structure. A first ventilation structure is located adjacent to the first end and connected between the closed structure and the outside air. The first ventilation structure is disposed on a side surface facing the optical elements of the retaining element and includes a contact surface and a first shrunk surface.