公开(公告)号：US20240353654A1

公开(公告)日：2024-10-24

申请号：US18683092

申请日：2022-08-10

Applicant: LG INNOTEK CO., LTD.

Inventor： Ju Yong SHIM

IPC: G02B13/00 ,  G02B3/00 ,  G02B13/18

CPC classification number: G02B13/0045 ,  G02B13/18 ,  G02B2003/0093

Abstract: The optical system disclosed in the embodiment of the invention includes first to fourth lens groups disposed along an optical axis in a direction from an object side to a sensor side and including at least one lens, respectively, wherein the first lens group and the fourth lens group have opposite refractive powers, the second lens group and the third lens group have opposite refractive powers, positions of the first and fourth lens groups are fixed, and a position of each of the second and third lens groups is movable in a direction of the optical axis, wherein the optical system having the first to fourth lens groups is operated with magnifications according to changes in at least three modes according to a movement of each of the second lens group and the third lens group, and the following equation may satisfy: TTL/EPD_Tele

公开(公告)号：US20230080373A1

公开(公告)日：2023-03-16

申请号：US17919799

申请日：2021-04-21

Applicant: LG INNOTEK CO., LTD.

Inventor： Ju Yong SHIM ,  Tae Kyung KIM

IPC: G02B15/14

Abstract: A zoom optical system according to an embodiment of the present invention includes a first lens group, a second lens group, a third lens group, and a fourth lens group which are sequentially arranged in a direction from a subject side to an image side, wherein the second lens group and the third lens group are movable, and an effective focal length (EFL) in a telephoto mode is defined by an expression below. 11.5

公开(公告)号：US20240353653A1

公开(公告)日：2024-10-24

申请号：US18575737

申请日：2022-07-01

Applicant: LG INNOTEK CO., LTD.

Inventor： Ju Yong SHIM

IPC: G02B13/00 ,  G02B3/00 ,  G02B15/24 ,  G03B30/00

CPC classification number: G02B13/0045 ,  G02B3/0087 ,  G02B13/009 ,  G02B15/24 ,  G03B30/00 ,  G02B2003/0093

Abstract: The optical system disclosed in the embodiment of the invention includes first to fourth lens groups arranged along an optical axis from an object side toward a sensor side and including each including at least one lens, wherein the first lens group has a refractive power opposite to that of the fourth lens group, the second lens group has a refractive power opposite to that of the third lens group, the first and fourth lens groups are fixed, the second and third lens groups are moved in a direction of the optical axis, each of the first and fourth lens groups includes at least one lens of a non-circular shape, the non-circular lens has a non-circular ratio (CH/CA) greater than 0.7, the non-circular ratio is a ratio of a minimum clear aperture (CH: clear height) and maximum clear aperture (CA) of a lens surface with a large clear aperture among an object-side surface and a sensor-side surface of the non-circular lens, and the non-circular ratio of at least one lens included in the first lens group may be greater than the non-circular ratio of at least one lens included in the fourth lens group.

公开(公告)号：US20230116562A1

公开(公告)日：2023-04-13

申请号：US17915962

申请日：2021-03-30

Applicant: LG INNOTEK CO., LTD.

Inventor： Ju Yong SHIM ,  Tae Kyung KIM

IPC: G02B15/14 ,  G02B15/20

Abstract: A zoom optical system according to an embodiment of the present invention comprises a first lens group, a second lens group, a third lens group, and a fourth lens group which are successively arranged from an object side to an image side, wherein the first lens group to the fourth lens group each comprise two lenses, wherein the second lens group and the third lens group are movable, and wherein the telephoto effective focal length (EFL) is defined by the mathematical expression below: 9 . 0

公开(公告)号：US20230176347A1

公开(公告)日：2023-06-08

申请号：US17920222

申请日：2021-04-21

Applicant: LG INNOTEK CO., LTD.

Inventor： Ju Yong SHIM ,  Tae Kyung KIM

IPC: G02B15/14

CPC classification number: G02B15/144

Abstract: A zoom optical system according to an embodiment of the present invention comprises a first lens group, a second lens group, a third lens group, and a fourth lens group which are sequentially arranged in a direction from a subject side to an image side, wherein each of the first lens group to the fourth lens group includes at least two lenses, the second lens group and the third lens group are movable, and an effective focal length (EFL) in a wide angle mode is defined by an expression below.




5.5