公开(公告)号：US20200174224A1

公开(公告)日：2020-06-04

申请号：US16388412

申请日：2019-04-18

Applicant: LARGAN PRECISION CO.,LTD.

Inventor： Syuan Ruei LAI ,  Wei-Yu CHEN

IPC: G02B9/60 ,  H04N5/225 ,  G02B7/02

Abstract: A photographing optical lens assembly 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. The first lens element has positive refractive power. The third lens element has negative refractive power. The fifth lens element has negative refractive power. The photographing optical lens assembly has a total of five lens elements.

公开(公告)号：US20240168266A1

公开(公告)日：2024-05-23

申请号：US18376394

申请日：2023-10-03

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chen Wei FAN ,  Syuan Ruei LAI ,  Jyun-Jia CHENG ,  Ming-Ta CHOU

IPC: G02B13/00 ,  H04N23/55

CPC classification number: G02B13/0065 ,  H04N23/55

Abstract: An optical path folding element includes an optical portion, a connection portion, matte structures and a light blocking layer. The optical portion has an optical surface and two reflective surfaces. A light beam enters into the optical path folding element via the optical surface and is reflected inside the optical path folding element through the optical surface. Each reflective surface is configured to reflect the light beam again inside the optical path folding element. The connection portion has connection surfaces connected to the optical surface and the reflective surfaces. The matte structures are at least disposed on and integrally formed with the connection portion. Each unitary structure of the matte structures is tapered off and recessed from the connection portion, such that the outer surface of the connection portion has an undulating shape. The light blocking layer is at least disposed on the connection portion for blocking light.

公开(公告)号：US20210191075A1

公开(公告)日：2021-06-24

申请号：US16814914

申请日：2020-03-10

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuo-Jui WANG ,  Kuan Chun WANG ,  Hung-Shuo CHEN ,  Jin Sen WANG ,  Syuan Ruei LAI ,  Wei-Yu CHEN

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

Abstract: An optical lens assembly includes four lens elements which are, in order from an object side to an image side along an imaging optical path: 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 an image-side surface being concave in a paraxial region thereof. The third lens element has an object-side surface being concave in a paraxial region thereof. The fourth lens element with negative 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, and at least one of the object-side surface and the image-side surface of the fourth lens element has at least one inflection point in an off-axis region thereof.

公开(公告)号：US20200285027A1

公开(公告)日：2020-09-10

申请号：US16413200

申请日：2019-05-15

Applicant: LARGAN PRECISION CO.,LTD.

Inventor： Hung-Shuo CHEN ,  Syuan Ruei LAI ,  Kuo-Jui WANG ,  Po-Lun HSU ,  Wei-Yu CHEN

IPC: G02B9/62 ,  G02B7/02 ,  H04N5/225

Abstract: An imaging optical 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 first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof.