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公开(公告)号:US20160091689A1
公开(公告)日:2016-03-31
申请号:US14862204
申请日:2015-09-23
Inventor: Fumio SHINANO , Junichi TAKAHASHI , Hiroshi KURUMATANI
IPC: G02B7/02
CPC classification number: G02B7/023
Abstract: There is provided a lens barrel capable of suppressing deformation of a rear frame upon application of a radial inward force to the rear frame. The lens barrel is a lens barrel attachable to a camera body. The lens barrel includes a lens mount mechanically or electrically connected to the camera body, a fixed frame fixed to the lens mount, and a rear frame that covers an outer periphery of the fixed frame. The rear frame has a tubular portion and flanges that extend from a front end and a rear end of the tubular portion radially inward, and at least a part of a radial inner end of the flange is brought into contact with the fixed frame.
Abstract translation: 提供了一种镜筒,其能够在向后框架施加径向向内的力时抑制后框架的变形。 透镜镜筒是可附着到照相机主体上的镜筒。 透镜镜筒包括机械地或电连接到照相机主体的透镜座,固定到透镜座的固定框架和覆盖固定框架外周的后框架。 后框架具有管状部分和从管状部分的前端和后端径向向内延伸的凸缘,凸缘的径向内端的至少一部分与固定框架接触。
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公开(公告)号:US20230384555A1
公开(公告)日:2023-11-30
申请号:US17975726
申请日:2022-10-28
Inventor: Fumio SHINANO
Abstract: A lens barrel (10) comprises a lens mount (23), a fifth lens group unit (17), a cam frame (13), a cam pin (17c), a cam pin holder (17b), a main shaft (17g), and an urging spring (17f). The cam frame 13 encloses the fifth lens group unit 17, and has a cam groove 13a. The cam pin 17c moves in the optical axis direction in a state of being engaged with the cam groove 13a. The cam pin holder 17b is provided to the fifth lens group unit 17 in a state of being capable of relative motion in the optical axis direction, and holds the cam pin 17c. The main shaft 17g allows the fifth lens group unit 17 to move in the optical axis direction. The urging spring 17f is provided to the fifth lens group unit 17, urges the cam pin holder 17b toward the subject side in the optical axis direction, and contracts when the teleconverter 30 is mounted to the lens mount 23 to retract the fifth lens group unit 17 in the optical axis direction.
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公开(公告)号:US20150226932A1
公开(公告)日:2015-08-13
申请号:US14696419
申请日:2015-04-25
Inventor: Akio KONISHI , Tetsuya UNO , Fumio SHINANO
CPC classification number: G02B7/021 , G02B7/022 , G02B7/023 , G02B7/026 , G02B7/08 , G02B7/10 , G02B7/102 , G02B7/12 , G02B27/646 , G03B3/10 , G03B5/00 , G03B13/34 , G03B17/04 , G03B17/565 , G03B2205/0007 , G03B2205/0069 , G03B2205/0092
Abstract: A lens barrel includes a support frame and a retracting lens frame. The support frame includes a main body portion, a first linking portion and a second linking portion. The first region is configured to dispose the second lens in the imaging enabled state. The second region is formed continuously with the first region. The first linking portion links the second region on one side of the main body portion in the optical axis direction. The second linking portion links the second region on the other side of the main body portion in the optical axis direction. The retracting lens frame is disposed between the first linking portion and the second linking portion in a housed state.
Abstract translation: 镜筒包括支撑框架和缩回透镜框架。 支撑框架包括主体部分,第一连接部分和第二连接部分。 第一区域被配置为将第二透镜设置在成像使能状态。 第二区域与第一区域连续形成。 第一连接部分在主体部分的光轴方向的一侧上连接第二区域。 第二连接部分在主体部分的另一侧沿光轴方向连接第二区域。 缩回透镜框在收纳状态下设置在第一连结部和第二连结部之间。
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公开(公告)号:US20150219873A1
公开(公告)日:2015-08-06
申请号:US14688250
申请日:2015-04-16
Inventor: Fumio SHINANO , Tetsuya UNO
CPC classification number: G02B7/10 , G02B7/021 , G02B7/022 , G02B7/04 , G02B7/08 , G02B7/102 , G02B27/646 , G03B3/10 , G03B5/00 , G03B13/32 , G03B17/04 , G03B2205/0007 , G03B2205/0015 , G03B2205/0092
Abstract: A lens barrel includes a first lens, a second lens, a first frame body, a second frame body, and a retracting lens frame. The retracting lens frame is configured to move so that a position of the second optical axis of the second lens changes from a position on the first optical axis of the first lens to a position that is outside the first optical axis, during the transition period between the imaging enabled state and the housed state. A contact portion is formed on the inner peripheral part of the first frame body. A protrusion of the retracting lens frame is configured to engage with and guided by the contact portion during movement of the retracting lens frame. The thickness of a region constituting the side wall of the contact portion is increased over the thickness of the other region toward the inside of the cylindrical part.
Abstract translation: 镜筒包括第一透镜,第二透镜,第一框体,第二框体和缩回透镜框。 缩回透镜框架被配置为移动,使得第二透镜的第二光轴的位置从第一透镜的第一光轴上的位置改变到位于第一光轴外部的位置,在第二透镜的第二光轴之间的过渡期间 成像使能状态和收纳状态。 在第一框体的内周部形成有接触部。 缩回透镜框架的突起构造成在缩回透镜框架的移动期间与接触部分接合并由其引导。 构成接触部的侧壁的区域的厚度比另一区域的厚度朝向圆筒部的内侧增加。
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公开(公告)号:US20240219812A1
公开(公告)日:2024-07-04
申请号:US17793677
申请日:2021-12-17
Inventor: Fumio SHINANO , Tetsuya MORITA , Yuichiro KIMOTO
IPC: G03B13/32
CPC classification number: G03B13/32
Abstract: A zoom ring drive device (10) comprises a guide unit (11), a guide unit (14), a drive gear (21), and a DC motor (23). The guide unit (11) slides in the optical axis direction of a lens (L1) included in the lens barrel (32). The guide unit (14) is provided to the guide unit (11) and slides in a direction perpendicular to the optical axis direction. The drive gear (21) is provided in the guide unit (14) at a position where the drive gear comes into contact with a ring gear (25) wound around a zoom ring (33), and rotates in a state of being in contact with the ring gear (25) to rotate the zoom ring (33). The DC motor (23) is provided to the guide unit (14) and rotationally drives the drive gear (21).
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公开(公告)号:US20190072743A1
公开(公告)日:2019-03-07
申请号:US16179949
申请日:2018-11-04
Inventor: Fumio SHINANO , Takeshi SAKAKIBARA
Abstract: A lens barrel includes a first lens frame that holds a first lens; a second lens frame that holds a second lens, and holds the first lens frame movably along an optical axis; and a pair of linear units that drive the movement of the first lens frame along the optical axis. When seen in an optical axis direction, the pair of linear units are disposed along the outer circumference of the first lens frame, at mutually non-opposing positions across the optical axis.
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公开(公告)号:US20170184810A1
公开(公告)日:2017-06-29
申请号:US15391044
申请日:2016-12-27
Inventor: Fumio SHINANO , Tetsuya MORITA
Abstract: A lens barrel includes a tip member, a lens hood, and a sliding member. The tip member is disposed on a subject side in an optical axis direction, and includes an optical system. The lens hood moves between a storage position and a use position in the optical axis direction. The sliding member is provided on an inner circumferential surface side of the lens hood. When the lens hood moves from the storage position to the use position, the sliding member moves to the subject side in the optical axis direction in a state where the sliding member is in contact with an outer circumferential surface of the tip member. In a state where the lens hood is located at the storage position, an interval of at least a portion of a clearance formed between the inner circumferential surface of the lens hood and the outer circumferential surface of the tip member is narrowed toward the subject side in the optical axis direction.
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