公开(公告)号：US11243379B2

公开(公告)日：2022-02-08

申请号：US16421454

申请日：2019-05-23

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Tsung-Han Tsai ,  Hsin-Hsuan Huang

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

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 has refractive power. The second lens element has positive refractive power. The third lens element with positive refractive power has an image-side surface being concave in a paraxial region thereof. The fourth lens element has refractive power. The fifth lens element with refractive power has an image-side surface being concave in a paraxial region thereof, wherein an object-side surface and the image-side surface of the fifth lens element are aspheric, and at least one of the surfaces of the fifth lens element has at least one inflection point. The optical photographing lens assembly has a total of five lens elements with refractive power.

公开(公告)号：US11009682B2

公开(公告)日：2021-05-18

申请号：US16245231

申请日：2019-01-10

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Po-Lun Hsu ,  Tsung-Han Tsai ,  Hsin-Hsuan Huang

IPC: G02B13/00 ,  G02B5/00 ,  G02B13/18 ,  G02B9/62 ,  G02B5/20 ,  G02B27/00 ,  G02B3/04

Abstract: A 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, a fifth lens element and a sixth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element, the third lens element and the fourth lens element have refractive power. The fifth lens element with negative refractive power has a convex object-side surface and a concave image-side surface, wherein the surfaces thereof are aspheric, and at least one of the surfaces thereof has at least one inflection point thereon. The sixth lens element with negative refractive power has a convex object-side surface and a concave image-side surface, wherein the surfaces thereof are aspheric, and at least one of the surfaces thereof has at least one inflection point.

公开(公告)号：US10914925B2

公开(公告)日：2021-02-09

申请号：US16529756

申请日：2019-08-01

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Hsiang-Chi Tang ,  Tsung-Han Tsai ,  Hsin-Hsuan Huang

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

Abstract: An image capturing optical 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, a fourth lens element, a fifth lens element, and a sixth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element has refractive power. The third lens element with refractive power has a concave image-side surface. The fourth lens element has refractive power, and at least one surface thereof is aspheric. The fifth lens element with negative refractive power has a concave object-side surface and a convex image-side surface, and the surfaces thereof are aspheric. The sixth lens element with refractive power has a convex object-side surface, and an image-side surface changing from concave at a paraxial region thereof to convex at a peripheral region thereof, and the surfaces are aspheric.

公开(公告)号：US10809496B2

公开(公告)日：2020-10-20

申请号：US16003129

申请日：2018-06-08

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Tsung-Han Tsai ,  Hsin-Hsuan Huang

IPC: G02B3/02 ,  G02B13/18 ,  G02B13/00 ,  G02B9/62 ,  G02B5/00 ,  G02B5/20 ,  G02B27/00

Abstract: An image capturing 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 with positive refractive power has a convex object-side surface. The second lens element with negative refractive power has a concave object-side surface. The third lens element has negative refractive power. The fourth lens element has refractive power. The fifth lens element with positive refractive power has a convex image-side surface. The sixth lens element with refractive power has a concave image-side surface, wherein an object-side surface and the image-side surface of the sixth lens element are aspheric, and the sixth lens element has at least one inflection point on the image-side surface thereof.

公开(公告)号：US10670839B2

公开(公告)日：2020-06-02

申请号：US16431713

申请日：2019-06-04

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Shan Chen ,  Tsung-Han Tsai ,  Ming-Ta Chou

IPC: G02B3/02 ,  G02B13/18 ,  G02B21/02 ,  G02B13/00 ,  G02B9/62 ,  G02B5/00 ,  G02B5/20 ,  G02B27/00

Abstract: An optical image 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, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element has positive refractive power. The second lens element has positive refractive power. The third lens element has positive refractive power. The fourth lens element has refractive power. The fifth lens element with refractive power has an image-side surface being convex in a paraxial region thereof, wherein at least one surface of the fifth lens element is aspheric. The sixth lens element with refractive power has an image-side surface being concave in a paraxial region thereof, wherein at least one surface of the sixth lens element is aspheric, and the image-side surface of the sixth lens element has at least one inflection point thereon.

公开(公告)号：US10564397B2

公开(公告)日：2020-02-18

申请号：US15693418

申请日：2017-08-31

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Shan Chen ,  Tsung-Han Tsai ,  Hsin-Hsuan Huang

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

Abstract: An optical imaging system includes, in order from an object side to an image side, a first lens element with positive refractive power, a second lens element, a third lens element, a fourth lens element, and a fifth lens element. Each of the fourth lens element and the fifth lens element includes at least one aspheric surface. The fourth lens element and the fifth lens element are made of plastic. The fifth lens element includes a concave image-side surface and at least one inflection point. An axial distance is formed between each of the first lens element, the second lens element, the third lens element, the fourth lens element, and the fifth lens element, and the optical imaging system further comprises a stop.

公开(公告)号：US10527824B2

公开(公告)日：2020-01-07

申请号：US16231933

申请日：2018-12-24

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Tsung-Han Tsai ,  Hsin-Hsuan Huang

IPC: G02B13/00 ,  G02B13/18 ,  G02B3/04 ,  G02B9/64 ,  H04N5/225 ,  G02B27/00

Abstract: An optical image capturing system 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, the second and the third lens elements all have refractive power. The fourth lens element with refractive power has both surfaces being aspheric. The fifth lens element with refractive power has both surfaces being aspheric. The sixth lens element with refractive power has an image-side surface having at least one convex shape at a peripheral region thereof and both surfaces being aspheric. The seventh lens element with refractive power has an image-side surface having at least one convex shape at a peripheral region thereof, wherein both surfaces being aspheric, and at least one surface has at least one inflection point thereon.

公开(公告)号：US10338348B2

公开(公告)日：2019-07-02

申请号：US15709979

申请日：2017-09-20

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuan-Ming Chen ,  Tsung-Han Tsai ,  Hsin-Hsuan Huang

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

Abstract: This disclosure provides an optical image capturing lens system comprising: a positive first lens element having a convex object-side surface, a negative second lens element, a positive third lens element having a convex image-side surface, a fourth lens element having a concave object-side surface and a convex image-side surface; and a positive fifth lens element having a convex object-side surface at a paraxial region thereof, both of the object-side and image-side surfaces being aspheric, and at least one inflection point is positioned on at least one of the object-side and image-side surfaces thereof. When particular relations are satisfied, the angle at which light projects onto the image plane can be efficiently controlled for increasing the relative illumination and preventing the occurrence of vignetting.

公开(公告)号：US10281684B2

公开(公告)日：2019-05-07

申请号：US15698632

申请日：2017-09-07

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuan-Ming Chen ,  Tsung-Han Tsai ,  Hsin-Hsuan Huang ,  Chun-Che Hsueh

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

Abstract: An optical image capturing system 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 positive refractive power has a convex object-side surface. The second lens element and the third lens element have refractive power. The fourth lens element with negative refractive power has a concave object-side surface and a convex image-side surface. The fifth lens element with positive refractive power has a convex object-side surface, wherein at least one inflection point is on at least one surface thereof. The sixth lens element with negative refractive power has a concave object-side surface. The surfaces of the fifth and the sixth lens elements are aspheric. The optical image capturing system has a total of six lens elements.

公开(公告)号：US09952411B2

公开(公告)日：2018-04-24

申请号：US15216717

申请日：2016-07-22

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Lin-Yao Liao ,  Tsung-Han Tsai ,  Ming-Ta Chou

IPC: G02B13/18 ,  G02B3/02 ,  G02B13/00 ,  G02B9/62 ,  G02B27/00

CPC classification number: G02B13/0045 ,  G02B9/62 ,  G02B13/002 ,  G02B13/18 ,  G02B27/0025

Abstract: An optical image 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, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element with positive refractive power has a convex object-side surface and a concave image-side surface. The second lens element, the third lens element, and the fourth lens element have refractive power. The fifth lens element with positive refractive power is made of plastic, and has a convex object-side surface and a concave image-side surface, wherein the surfaces thereof are aspheric. The sixth lens element with refractive power is made of plastic, and has a concave image-side surface, wherein the image-side surface thereof changes from concave at a paraxial region to convex at a peripheral region, and the surfaces thereof are aspheric.