公开(公告)号：US11892755B2

公开(公告)日：2024-02-06

申请号：US18163847

申请日：2023-02-02

Applicant: FUJIFILM Corporation

Inventor： Takeya Abe ,  Keito Kamio ,  Ryosuke Nagami ,  Shinichiro Fujiki ,  Kazuaki Okamori ,  Yuya Sakai

IPC: G03B17/14 ,  G02B7/10 ,  H04N23/51 ,  H04N23/55

CPC classification number: G03B17/14 ,  G02B7/10 ,  H04N23/51 ,  H04N23/55

Abstract: A lens unit includes a guided portion that includes a first bearing portion and a second bearing portion disposed to be spaced apart from each other in a direction X and is slidably supported by a guide shaft, and a lens holding member. The lens unit includes a first tilt-preventing member having a linear expansion coefficient lower than a linear expansion coefficient of the lens holding member. The first tilt-preventing member is fixed to a region of the guided portion positioned between the first bearing portion and second bearing portion.

公开(公告)号：US11412128B2

公开(公告)日：2022-08-09

申请号：US16830044

申请日：2020-03-25

Applicant: FUJIFILM Corporation

Inventor： Koji Mori ,  Shinichiro Fujiki

IPC: H04N5/232 ,  G02B7/10 ,  G02B7/36

Abstract: A CPU executes a zoom tracking control program to function as an acquisition unit that acquires a focal length of an imaging lens from a state of a zoom lens; and a control unit that performs first control of performing control to change a position of a focus lens along an optical axis direction according to the acquired focal length on the basis of a zoom tracking curve represented by tracking data representing a correspondence relationship between the focal length and a focus position according to a subject distance, and second control of acquiring contrast information representing contrast of a captured image a plurality of times during execution of the first control and performing control to change the zoom tracking curve used in the first control on the basis of a change of contrast values represented by a plurality of pieces of the acquired contrast information.

公开(公告)号：US11294145B2

公开(公告)日：2022-04-05

申请号：US16933940

申请日：2020-07-20

Applicant: FUJIFILM Corporation

Inventor： Akihiro Uchida ,  Koichi Tanaka ,  Kenkichi Hayashi ,  Shinichiro Fujiki ,  Seiichi Izawa

IPC: G02B7/28 ,  G02B7/09 ,  G03B5/00 ,  G03B13/36 ,  H04N5/225 ,  H04N5/235

Abstract: An imaging device derives a change amount of image magnification corresponding to each of a plurality of F-numbers in an autofocus area on the basis of a reference value of the change amount of the image magnification in accordance with a change in position of a focus lens for each of the plurality of F-numbers, in a case where autofocus is executed; determines, as a limit F-number, an F-number corresponding to any change amount equal to or less than a threshold value of the allowed change amount of the image magnification among the derived change amounts; and sets an F-number as the limit F-number in a case where the F-number obtained from a subject luminance in a case where autofocus is executed exceeds the determined limit F-number.

公开(公告)号：US09247112B2

公开(公告)日：2016-01-26

申请号：US14479669

申请日：2014-09-08

Applicant: FUJIFILM Corporation

Inventor： Shunsuke Miyagishima ,  Shinichiro Fujiki

IPC: H04N5/217 ,  G03B13/02 ,  H04N5/232 ,  G03B13/06 ,  H04N5/225 ,  H04N5/357

CPC classification number: H04N5/2173 ,  G03B13/02 ,  G03B13/06 ,  H04N5/2251 ,  H04N5/23293 ,  H04N5/3572

Abstract: An imaging device comprising: a first optical system formed by combining an optical system from an imaging lens to an image pickup element where a subject image is formed and an optical system from a display device where an electronic image of a subject representing an image formed at the image pickup element is displayed to an ocular unit of a finder; a second optical system which guides an optical image of the subject to the ocular unit; and a correcting device which performs, based on distortion aberration information about the first optical system and distortion aberration about the second optical system, distortion aberration correction so that distortion aberration equal to distortion aberration of the second optical system occurs in an electronic image of the subject and causes the electronic image to be displayed on the display device.

Abstract translation: 一种成像装置，包括：第一光学系统，其通过将来自成像透镜的光学系统与形成有被摄体图像的图像拾取元件组合而形成;以及来自显示装置的光学系统，其中所述对象的电子图像形成在 图像拾取元件被显示到取景器的目镜单元; 将所述受试者的光学图像引导到所述眼部单元的第二光学系统; 以及校正装置，其基于关于第一光学系统的失真像差信息和关于第二光学系统的畸变像差执行畸变像差校正，使得在被摄体的电子图像中发生与第二光学系统的畸变像差相等的畸变像差 并使电子图像显示在显示装置上。