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公开(公告)号：US09829675B2
公开(公告)日：2017-11-28
申请号：US15337176
申请日：2016-10-28
Inventor： Hiroyasu Fujinaka
CPC classification number: G02B7/102 , G02B7/023 , G02B7/025 , G02B27/646
Abstract: A lens barrel includes: a base frame having a first through-hole; an adhesion plate having a second through-hole; a lens frame disposed within the base frame; and an adhesively fixing portion fixing the lens frame to the base frame, wherein the adhesion plate is disposed in a vicinity of the first through-hole and movably held by the base frame, the lens frame includes a projection projecting radially relative to an optical axis of the lens barrel, the projection being engaged with the second through-hole and inserted in the first through-hole, the projection is movable within the first through-hole so as to change a position of the lens frame relative to the base frame, and the adhesively fixing portion is disposed in the first through-hole.
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公开(公告)号：US11754909B2
公开(公告)日：2023-09-12
申请号：US17229949
申请日：2021-04-14
Inventor： Hiroyasu Fujinaka
CPC classification number: G03B3/10 , G03B5/02 , G03B2205/0053 , G03B2205/0069
Abstract: A lens drive unit 10 comprises permanent magnets 215a and 215b, a yoke 211, and a coil 210. The yoke 211 has center yoke portions 221a and 222a, a back yoke portion 231 and a connect yoke portion that magnetically joins the center yoke portions 221a and 222a and the back yoke portion 231. The coil 210 is wound so as to surround part of the center yoke portions 221a and 222a. The height of a surface of the center yoke portions facing the permanent magnets in an orthogonal direction to the optical axis direction is such that the height near the middle part in the optical axis direction is smaller than the height near the two ends in the optical axis direction.
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公开(公告)号：US11619863B2
公开(公告)日：2023-04-04
申请号：US17393673
申请日：2021-08-04
Inventor： Hiroyasu Fujinaka
Abstract: A lens barrel includes a linear actuator that is disposed more to the outer peripheral side than the outer peripheral surface of a focus lens unit, and has two permanent magnets, a yoke unit, and a coil; and the focus lens unit that holds a focus lens and is driven back and forth along the optical axis direction. The permanent magnets are disposed substantially in parallel and spaced apart, with the same poles facing each other. The yoke unit includes a center yoke portion, a back yoke portion, and a yoke that magnetically couples the center yoke portion and the back yoke portion. The coil is wound around the center yoke portion, and its center is offset from the center of the two permanent magnets to the outer peripheral side with respect to the optical axis center of the focus lens.
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公开(公告)号：US11194117B2
公开(公告)日：2021-12-07
申请号：US16761376
申请日：2018-07-11
Inventor： Hiroyasu Fujinaka
Abstract: The lens barrel disclosed herein comprises cam pin (3a, 3b, and 3c) fixed and supported by a lens holding frame (1); a biasing pin (4) that is biased and supported near one cam pin (3a) of the lens holding frame (1); and a cam frame (6) that has cam grooves that engage with each of the cam pins (3a, 3b, and 3c) and the biasing pin (4). The cam groove (7d) that engages with the biasing pin (4) engages with the biasing pin (4) on one side surface in the optical axis direction, and the cam groove (7a) that engages with the cam pin (3a) near the biasing pin (4) engages with the cam pin (3a) on the side surface on the opposite side in the optical axis direction from the side surface that engages with the biasing pin (4).
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Patent Agency Ranking
公开(公告)号：US09594229B2
公开(公告)日：2017-03-14
申请号：US14849638
申请日：2015-09-10
Inventor： Hiroyasu Fujinaka , Toshiyuki Nakada , Tetsuya Uno
IPC: G02B7/10
CPC classification number: G02B7/10 , G02B7/102 , G02B15/16 , G02B27/646
Abstract: A lens barrel in which a lens can be moved in a direction parallel to an optical axis includes: a first frame having a cam follower and a cam follower base that holds the cam follower; and a second frame that has a cam groove engageable with the cam follower. The first frame and the second frame are moved relatively to each other along the optical axis. The cam follower base has a first end connected to the main body of the first frame via at least one thin portion, and a second end not connected to the main body. The thin portion is formed such that a thickness of the thin portion in a radial direction of the lens barrel is smaller than that of the cam follower base.
Abstract translation: 透镜可以在平行于光轴的方向上移动的镜筒包括：具有凸轮从动件的第一框架和保持凸轮从动件的凸轮从动件底座; 以及具有可与凸轮从动件接合的凸轮槽的第二框架。 第一框架和第二框架沿光轴相对移动。 凸轮从动件底座具有经由至少一个薄部连接到第一框架的主体的第一端和不连接到主体的第二端。 薄部形成为使得透镜筒的径向上的薄部的厚度小于凸轮从动件基座的厚度。
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公开(公告)号：US09235024B2
公开(公告)日：2016-01-12
申请号：US13949138
申请日：2013-07-23
Inventor： Tetsuya Uno , Hiroyasu Fujinaka
CPC classification number: G02B7/02 , G02B7/102 , G02B27/646
Abstract: A lens barrel comprises an outer frame and an inner frame. The lens barrel has a first state, a second state, and a third state during operation in which the outer frame and the inner frame rotate relatively. In the first state, a first cam follower is guided by a first cam. In the second state, the first cam follower is guided by the first cam, and a second cam follower is guided by a second cam. In the third state, the second cam follower is guided by the second cam. In the third state, at least part of the first cam follower enters a space formed by a recess portion or a hole portion.
Abstract translation: 镜筒包括外框架和内框架。 镜筒在操作期间具有第一状态，第二状态和第三状态，其中外框架和内框架相对旋转。 在第一状态下，第一凸轮从动件由第一凸轮引导。 在第二状态下，第一凸轮从动件由第一凸轮引导，第二凸轮从动件由第二凸轮引导。 在第三状态下，第二凸轮从动件由第二凸轮引导。 在第三状态下，第一凸轮从动件的至少一部分进入由凹部或孔部形成的空间。
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公开(公告)号：US11194229B2
公开(公告)日：2021-12-07
申请号：US16394580
申请日：2019-04-25
Inventor： Hiroyasu Fujinaka
Abstract: A lens barrel 10 comprises a holding frame 51, a guide pole 53 supported by the holding frame 51, a focus lens unit 52 that moves along the guide pole 53, a first actuator (a yoke 21, a coil 22, and a driving magnet 23) that relatively moves the focus lens unit 52 along the guide pole 53 with respect to the holding frame 51, and a second actuator (a gear 55 and a stepping motor 56) that rotationally drives the guide pole 53 around the axis.
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公开(公告)号：US10509196B2
公开(公告)日：2019-12-17
申请号：US15145171
申请日：2016-05-03
Inventor： Tetsuya Uno , Atsushi Hasegawa , Manabu Kobayashi , Hiroyasu Fujinaka
IPC: G02B7/10 , G03B3/10 , G02B13/00 , G02B7/04 , G02B27/64 , G03B5/00 , G03B17/04 , H04N5/225 , H04N5/232
Abstract: A lens barrel includes at least one lens, the optical axis of the lens; the first frame (the fixed frame 900) having the first restricting portion (901, 902) and having an approximately cylindrical shape about the optical axis; the second frame (1000) having the cam groove (1036) and having an approximately cylindrical shape about the optical axis; the third frame (510) having the guide portion (511) which restricts inclination thereof with respect to the first contact portion (514) and the optical axis and having an approximately cylindrical shape about the optical axis; the drive arm (520) having a cam follower (523), the second restricting portion (524, 525) and the second contact portion (526), and having an approximately arcuate shape constituted of a portion of a circular cylinder about the optical axis or an approximately plate shape; the guide shaft (601) for guiding the guide in a movable manner in the optical axis direction; and the spring (603). The first restricting portion engages with the second restricting portion. The cam engages with the cam groove (1036). The drive arm moves approximately parallel to the optical axis due to the relative rotation of the second with respect to the first frame, the third is biased by the thus bringing the first contact portion and the second contact portion into contact with each other, and the third frame moves in the optical axis direction in an interlocking manner with the drive with the inclination of the guide being restricted by the guide.
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公开(公告)号：US10082639B2
公开(公告)日：2018-09-25
申请号：US15418959
申请日：2017-01-30
Inventor： Hiroyasu Fujinaka , Toshiyuki Nakada , Tetsuya Uno
CPC classification number: G02B7/10 , G02B7/102 , G02B15/16 , G02B27/646 , H05K999/99
Abstract: A lens barrel in which a lens can be moved in a direction parallel to an optical axis includes: a first frame having a cam follower and a cam follower base that holds the cam follower; and a second frame that has a cam groove engageable with the cam follower. The first frame and the second frame are moved relatively to each other along the optical axis. The cam follower base has a first end connected to the main body of the first frame via at least one thin portion, and a second end not connected to the main body. The thin portion is formed such that a thickness of the thin portion in a radial direction of the lens barrel is smaller than that of the cam follower base.
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