公开(公告)号：US20210055531A1

公开(公告)日：2021-02-25

申请号：US16999666

申请日：2020-08-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Genki NAKAZAWA ,  Takao YAMANAKA ,  Yoshiaki KURIOKA

IPC: G02B15/20 ,  G02B13/18 ,  G02B15/22 ,  G02B13/00 ,  G03B17/14 ,  H04N5/225 ,  H04N5/232

Abstract: A zoom lens system includes: a first lens group having positive power; a second lens group having negative power; a third lens group having positive power; a fourth lens group having positive power; a fifth lens group having negative power; and a following lens group following the fifth lens group. The first to fifth lens groups and the following lens group are arranged in this order such that the first lens group is located closest to an object and that the following lens group is located closest to an image. While the zoom lens system is zooming, intervals between the respective lens groups change. While the zoom lens system is focusing from an infinity focus point through a shortest shooting range, a plurality of negative lens groups included in the fifth lens group and the following lens group move.

公开(公告)号：US20230393384A1

公开(公告)日：2023-12-07

申请号：US18235450

申请日：2023-08-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takao YAMANAKA ,  Yoshio MATSUMURA

IPC: G02B25/00 ,  G02B17/08

CPC classification number: G02B25/001 ,  G02B17/0856

Abstract: An eyepiece optical system has an optical axis for guiding a light beam between a pupil of a user and a display surface, and includes: a first lens element having, on a display side, a polarizing reflective surface reflecting or transmitting an incident light beam according to polarization of the incident light beam; and a second lens element disposed between the first lens element and the display surface, and having a partial reflection surface reflecting a part of the incident light beam and transmitting a remaining part thereof. The first lens element has, on a pupil side, an aspherical surface including a convex region having a convex shape opposite to the polarizing reflective surface with the optical axis being positioned therein. The aspherical surface satisfies 0.05

公开(公告)号：US20230305278A1

公开(公告)日：2023-09-28

申请号：US18205155

申请日：2023-06-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Genki NAKAZAWA ,  Takao YAMANAKA ,  Yoshiaki KURIOKA

IPC: G02B15/20 ,  G02B13/18 ,  G02B15/22 ,  G02B13/00 ,  G02B15/14

CPC classification number: G02B15/20 ,  G02B13/18 ,  G02B15/22 ,  G02B13/009 ,  G02B15/1461

Abstract: A zoom lens system includes: a first lens group having positive power; a second lens group having negative power; a third lens group having positive power; a fourth lens group having positive power; a fifth lens group having negative power; and a following lens group following the fifth lens group. The first to fifth lens groups and the following lens group are arranged in this order such that the first lens group is located closest to an object and that the following lens group is located closest to an image. While the zoom lens system is zooming, intervals between the respective lens groups change. While the zoom lens system is focusing from an infinity focus point through a shortest shooting range, a plurality of negative lens groups included in the fifth lens group and the following lens group move.