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公开(公告)号：US10474008B2
公开(公告)日：2019-11-12
申请号：US15785827
申请日：2017-10-17
Inventor： Taku Ichikawa , Atsushi Hasegawa , Takumi Kuwahara
Abstract: A collapsible lens barrel includes: an opening/closing unit (shutter unit) that includes an opening/closing portion (shutter blade) openable and closable along a plane orthogonal to an optical axis to control a light amount, and a maintaining portion (projection) that maintains an opened state of the opening/closing portion; an inner lens disposed closer to an object than the opening/closing unit is; an inner frame that holds the inner lens; an outer lens disposed closer to the object than the inner lens is; an outer frame that holds the outer lens; and a restriction portion that restricts operation of the maintaining portion by restriction applied from the outer frame to the maintaining portion via the inner frame to maintain the opened state of the opening/closing portion when the outer frame and the inner frame are collapsed.
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公开(公告)号：US10139648B2
公开(公告)日：2018-11-27
申请号：US15689018
申请日：2017-08-29
Inventor： Akio Konishi , Takumi Kuwahara , Tetsuya Uno , Fumio Shinano
Abstract: A lens barrel includes a first frame body, a second frame body, a support frame, and a retracting lens frame. The support frame is supported by the second frame body and moves with respect to the second frame body within a first plane for image blur correction in an imaging enabled state, the first plane being perpendicular to an optical axis. The retracting lens frame moves around a retraction shaft during a transition period between an imaging enabled state and a housed state, the retraction shaft being substantially parallel to the optical axis. The support frame has a protrusion which comes into contact with a groove included in the first frame body and restricts a movable range of the support frame in the first plane and a second plane that is parallel to the first plane.
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公开(公告)号：US10234746B2
公开(公告)日：2019-03-19
申请号：US14945480
申请日：2015-11-19
Inventor： Takumi Kuwahara , Koichi Muramatsu
IPC: G02B15/14 , G02B7/02 , G03B17/00 , G03B17/04 , G02B7/10 , G03B5/00 , G03B3/10 , G02B27/64 , G03B17/12
Abstract: A lens barrel of this technique includes a movable lens barrel unit section, and a master flange unit having a lens unit, and is switched between a collapsed state where the movable lens barrel unit section is stored in the master flange unit and an extended state where the movable lens barrel unit section is extended from the master flange unit. The master flange unit has a moving frame supported to be movable in an optical axis direction via a first elastic member extendable in the optical axis direction, and a lens frame supported to be movable in the optical axis direction via a second elastic member extendable in the optical axis direction relative to the moving frame. In the collapsed state, the movable lens barrel unit section presses the lens frame such that the moving frame and the lens frame get closer to the master flange against repulsive forces of the first elastic member and the second elastic member.
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公开(公告)号：US10247903B2
公开(公告)日：2019-04-02
申请号：US15451613
申请日：2017-03-07
Inventor： Keishi Iwasaki , Tetsuya Uno , Takumi Kuwahara
IPC: G02B7/02 , G02B7/09 , G03B11/00 , G03B17/04 , G02B5/00 , G02B7/08 , G03B11/04 , H04N5/225 , G02B5/20
Abstract: The lens barrel includes an imaging optical system comprising at least a first lens, a plate-shaped protection glass which is disposed closer to a subject side than the first lens and has light transmission, and an annular ring part provided on the outer circumferential edge of the surface of the protection glass facing the subject side.
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