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公开(公告)号：US11555980B2
公开(公告)日：2023-01-17
申请号：US16920691
申请日：2020-07-04
发明人： Daisuke Ito
摘要： A lens barrel having one end and the other end includes: a first frame that is movable and holds optical members; a second frame that is arranged to be relatively movable toward the other end with respect to the first frame, and holds optical members; and a third frame that is mounted on the first frame so as to be movable, and holds an optical member. The first frame includes a first stopper portion that comes into contact with the third frame to limit movement toward the one end. The first frame includes a second stopper portion that comes into contact with, when the first frame is most distant from the second frame, the third frame to limit movement toward the other end. The second frame includes a third stopper portion that has a contact surface located close to the one end with respect to the second stopper portion, and that comes into contact with, when the second frame is located within a range on the optical axis where the third frame is movable, the third frame to limit movement toward the other end.
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公开(公告)号：US10146027B2
公开(公告)日：2018-12-04
申请号：US15023073
申请日：2014-06-12
发明人： Daisuke Ito
摘要： In a lens barrel and an imaging apparatus, improvement in impact resistance and size reduction can be enhanced. The lens barrel includes the following elements; a guide frame including a rotation restricting rib; a first group frame; and a second group frame. The first group frame includes a first guide part engaged outside the rotation restricting rib. The relative rotation of the first frame is restricted by the rotation restricting rib and the first group frame is capable of moving along the optical axis direction. The second group frame includes a second guide part engaged inside the rotation restricting rib. The relative rotation of the second frame is restricted by the rotation restricting rib and the second group frame is capable of moving along the optical axis direction. A cam pin is formed on the outer peripheral surface of the first group frame and engages a cam cylinder disposed on the outer periphery of the first group frame.
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3.发明授权公开(公告)号：US12099249B2
公开(公告)日：2024-09-24
申请号：US17368438
申请日：2021-07-06
发明人： Daisuke Ito
摘要： A lens support mechanism (10) comprises a fourth lens group unit (24), a sixth lens group unit (26), a rectilinear cylinder 11, a cam cylinder (12), and a guide shaft (29a). The rectilinear cylinder 11 is provided on the outer peripheral side of the fourth lens group unit 24 and the sixth lens group unit 26, and has a rectilinear groove 11e into which a cam follower 24b and a main cam follower 26ba are inserted to restrict the rotation of the fourth lens group unit 24. A cam groove 12e and a cam groove 12h with which the cam follower 24b and the main cam follower 26ba are engaged are formed in the cam cylinder 12, and when the cam cylinder 12 rotates with respect to the rectilinear cylinder 11, this moves the fourth lens group unit 24 and the sixth lens group unit 26 in the optical axis OP direction. The guide shaft 29a is fixed at a first end to the fourth lens group unit 24 and inserted into the insertion opening 26c to guide the sixth lens group unit 26 in the optical axis OP direction.
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公开(公告)号：US20210194002A1
公开(公告)日：2021-06-24
申请号：US17257163
申请日：2019-03-18
发明人： Yuta Matsuo , Kaori Ishikawa , Daisuke Ito , Mamoru Kuramoto
IPC分类号： H01M4/587 , H01M10/0569 , H01M4/38 , H01M4/62 , H01M4/133
摘要： This negative electrode for a nonaqueous electrolyte secondary battery is configured such that a negative electrode mixture layer has: a first layer that is formed on a negative electrode collector and that contains a first carbonaceous active material, a Si-based active material, a polyacrylic acid or a salt thereof, and a fibrous carbon; and a second layer that is formed on the first layer and that contains a second carbonaceous active material which has a tap density higher than that of the first carbonaceous active material.
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5.发明授权公开(公告)号：US12105343B2
公开(公告)日：2024-10-01
申请号：US17403253
申请日：2021-08-16
发明人： Daisuke Ito
CPC分类号： G02B7/021 , G02B15/145 , G02B15/15
摘要： A lens support mechanism 10 comprises lens group units 23 to 27, a substantially cylindrical rectilinear cylinder 11, and a substantially cylindrical cam cylinder 12. The rectilinear cylinder 11 envelops the lens group units 23 to 27, and has main cam followers 11b protruding outward in the radial direction from the outer peripheral surface, and a sub cam groove 11c. The cam cylinder 12 has main cam grooves 12b and a sub cam follower 12c, and is disposed on the outer peripheral side of the rectilinear cylinder 11. The main cam grooves 12b engage with the main cam followers 11b and are formed substantially parallel to the sub cam groove 11c, and upon rotating relative to the rectilinear cylinder 11, move the lens group units 23 to 27 back and forth in the optical axis direction. The sub cam followers 12c project inward in the radial direction and engage with the sub cam grooves 11c.
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公开(公告)号：US12099254B2
公开(公告)日：2024-09-24
申请号：US17491675
申请日：2021-10-01
发明人： Daisuke Ito
摘要： It is an object of the present disclosure to provide a lens barrel with which looseness caused by a gap formed between a fixed barrel and a cam barrel can be effectively suppressed without increasing the rotational torque of the cam barrel, as well as a camera equipped with this lens barrel. A lens barrel 100 comprises first to seventh lens group units 21 to 27, a substantially cylindrical rectilinear barrel 11, a substantially cylindrical cam barrel 12, and spacers 11ga, 11gb, 11ha, 11hb, 11ia and 11ib. The cam barrel 12 moves the third to seventh lens group units 23 to 27 in the optical axis OP direction by being rotated with respect to the rectilinear barrel 11 in a state in which main cam followers 11b and main cam grooves 12b are engaged with each other. The spacers 11ga, 11gb, 11ha, 11hb, 11ia and 11ib protrude in the radial direction from the rectilinear barrel 11 and come into contact with the cam barrel 12 so as to suppress looseness between the rectilinear barrel 11 and the cam barrel 12, and the length in the optical axis OP direction is equal to or greater than the amount of movement of the cam barrel 12 in the optical axis OP direction with respect to the rectilinear barrel 11.
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公开(公告)号：US12095073B2
公开(公告)日：2024-09-17
申请号：US17414650
申请日：2019-11-27
发明人： Kaori Ishikawa , Daisuke Ito , Yuta Matsuo , Mamoru Kuramoto
CPC分类号： H01M4/133 , H01M4/134 , H01M4/386 , H01M4/587 , H01M4/622 , H01M2004/021 , H01M2004/027
摘要： A negative electrode having a negative electrode collector; and a negative-electrode mixed material layer that is formed atop the negative electrode collector. The negative-electrode mixed material layer includes: a first layer which contains a first carbon-based active material, a silicon-based active material, a polyacrylic acid, or a salt thereof, the first layer being formed atop the negative electrode collector; and a second layer having a tap density greater than that of the first carbon-based active material and a BET specific surface area smaller than that of the first carbon-based active material. The mass of the first layer is at least 50 mass % but less than 90 mass % with respect to the mass of the negative-electrode mixed material layer, and the mass of the second layer is greater than 10 mass % but no more than 50 mass % with respect to the mass of the negative-electrode mixed material layer.
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公开(公告)号：US20190051945A1
公开(公告)日：2019-02-14
申请号：US16076789
申请日：2017-01-23
IPC分类号： H01M10/0585 , H01M2/26
摘要： A stack-type nonaqueous electrolyte secondary battery, includes an electrode unit housed in an exterior body. The electrode unit includes a plurality of electrode stacks and an intermediate positive electrode plate. Each of the electrode stacks includes a plurality of positive electrodes, a plurality of negative electrodes. One electrode stack of two of the electrode stacks has the negative electrode disposed adjacent to a first surface of the intermediate positive electrode plate with a corresponding one of the separators interposed therebetween. The other electrode stack has the negative electrode disposed adjacent to a second surface of the intermediate positive electrode plate with a corresponding one of the separators interposed therebetween. The intermediate positive electrode plate body has a smaller area on a side surface in a thickness direction than the positive electrode plate body of each of the electrode stacks.
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