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公开(公告)号：US20250138389A1
公开(公告)日：2025-05-01
申请号：US18835726
申请日：2022-11-25
Inventor： Hiroyasu FUJINAKA
Abstract: A lens drive unit comprises two-phase coils and field units. The two-phase coils are fixed to a focusing lens frame that is able to move back and forth in the optical axis direction and holds a lens, and are disposed side by side along the optical axis direction. The field units have N poles and S poles that are disposed alternately along the optical axis direction. The coils are disposed in two or more sets side by side in the optical axis direction, with one set of two-phase coils for a field unit.
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公开(公告)号：US20160320587A1
公开(公告)日：2016-11-03
申请号：US15145150
申请日：2016-05-03
Inventor： Tetsuya UNO , Atsushi HASEGAWA , Manabu KOBAYASHI , Hiroyasu FUJINAKA
CPC classification number: G02B7/10 , G02B7/04 , G02B13/009 , G02B27/646 , G03B3/10 , G03B5/00 , G03B17/04 , G03B2205/0053 , H04N5/225 , H04N5/2254 , H04N5/23287
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：US20160246031A1
公开(公告)日：2016-08-25
申请号：US15145171
申请日：2016-05-03
Inventor： Tetsuya UNO , Atsushi HASEGAWA , Manabu KOBAYASHI , Hiroyasu FUJINAKA
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：US20210356841A1
公开(公告)日：2021-11-18
申请号：US16605194
申请日：2019-02-18
Inventor： Hiroyasu FUJINAKA
IPC: G03B3/10 , G02B7/08 , H02K41/035
Abstract: A focusing unit (1) comprises a linear motor driven in two phases, and comprises a two-phase coil (10a, 10b) and a drive magnet (9) that is disposed along the drive direction at a position opposite the two-phase coil (10a, 10b). The winding width of the coils (10a, 10b) in the portion opposite the drive magnet (9) is within an electrical angle range of 120°±7.7°, the average width of the coil at the portion opposite the drive magnet (9) is within an electrical angle range of 144°±4.6°, and the pitch between the two phases of coil (10a, 10b) is an electrical angle of 90°+180°×n (n is an integer of 0 or more).
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公开(公告)号：US20190384142A1
公开(公告)日：2019-12-19
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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Patent Agency Ranking
公开(公告)号：US20150192756A1
公开(公告)日：2015-07-09
申请号：US14589378
申请日：2015-01-05
Inventor： Tetsuya UNO , Atsushi HASEGAWA , Manabu KOBAYASHI , Hiroyasu FUJINAKA
CPC classification number: G02B7/10 , G02B7/04 , G02B13/009 , G02B27/646 , G03B3/10 , G03B5/00 , G03B17/04 , G03B2205/0053 , H04N5/225 , H04N5/2254 , H04N5/23287
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.
Abstract translation: 透镜镜筒包括至少一个透镜，透镜的光轴; 第一框架（固定框架900）具有第一限制部分（901,902），并且围绕光轴具有近似圆柱形的形状; 所述第二框架（1000）具有所述凸轮槽（1036）并且围绕所述光轴具有近似圆柱形的形状; 第三框架（510）具有引导部（511），其限制其相对于第一接触部（514）和光轴的倾斜，并且围绕光轴具有大致圆筒形; 所述驱动臂（520）具有凸轮从动件（523），所述第二限制部分（524,525）和所述第二接触部分（526），并且具有大致圆弧形状，所述大致弓形形状由围绕所述光轴 或近似板状; 用于沿光轴方向以可移动方式引导引导件的引导轴（601） 和弹簧（603）。 第一限制部分与第二限制部分接合。 凸轮与凸轮槽（1036）接合。 由于第二相对于第一框架的相对旋转，驱动臂大致平行于光轴移动，所以第三被偏置，从而使第一接触部分和第二接触部分彼此接触，并且 第三框架与驱动器以互锁的方式在光轴方向上移动，导向件的倾斜被引导件限制。
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公开(公告)号：US20240272518A1
公开(公告)日：2024-08-15
申请号：US18401522
申请日：2023-12-31
Inventor： Hiroyasu FUJINAKA
IPC: G03B3/10 , G02B7/02 , H02K41/035
CPC classification number: G03B3/10 , G02B7/021 , G02B7/023 , G03B2205/0069 , H02K41/0354
Abstract: A lens drive device 20 includes a second lens group frame unit 21, an n-phase (n is an integer of 2 or more) coil 23, a plurality of magnets 25, and a plurality of yokes 24. The second lens group frame unit 21 holds a second lens group L2 that is driven in the optical axis AX direction. The coil 23 is provided to the second lens group frame unit 21. The magnets 25 are disposed opposite the coil 23. The yokes 24 have a plurality of magnets 25 that are disposed along the optical axis AX direction so as to sandwich the coil 23, and each have a bent end portion 24c that is disposed along the lengthwise direction and improves rigidity in the lengthwise direction.
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公开(公告)号：US20170212325A1
公开(公告)日：2017-07-27
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：US20170059880A1
公开(公告)日：2017-03-02
申请号：US15228145
申请日：2016-08-04
Inventor： Hiroyasu FUJINAKA
CPC classification number: G02B27/646 , G02B7/023 , G02B7/08 , H02K7/06 , H02K41/02
Abstract: The actuator has a y-drive magnet and a y-yoke, and an attractive force occurs between the y-drive magnet and the y-yoke. The y-yoke is movable relative to the y-drive magnet in a plane perpendicular to a direction of magnetization of the y-drive magnet. The y-yoke has a flat section and a protrusion that protrudes from the flat section toward the y-drive magnet. The protrusion is disposed in the middle part of the flat section.
Abstract translation: 致动器具有y驱动磁体和y形磁轭，并且在y驱动磁体和y形磁轭之间产生吸引力。 y磁轭在与y驱动磁体的磁化方向垂直的平面中相对于y驱动磁体是可移动的。 y形轭具有从平坦部向y驱动磁体突出的平坦部分和突起。 突出部设置在平坦部的中间部。
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公开(公告)号：US20150192784A1
公开(公告)日：2015-07-09
申请号：US14589538
申请日：2015-01-05
Inventor： Hiroyasu FUJINAKA , Tetsuya UNO , Atsushi HASEGAWA , Manabu KOBAYASHI
CPC classification number: G02B7/10 , G02B7/04 , G02B13/009 , G02B27/646 , G03B3/10 , G03B5/00 , G03B17/04 , G03B2205/0053 , H04N5/225 , H04N5/2254 , H04N5/23287
Abstract: A lens barrel according to a first aspect of the present disclosure includes the lens frame which holds the lens, and the holding frame which holds the lens frame in a state where the lens frame is movable in a plane orthogonal to the optical axis. A biasing means which generates a force in the direction that the lens frame is lifted up against the gravity is provided to at least the holding frame out of the holding frame and the lens.
Abstract translation: 根据本公开的第一方面的透镜镜筒包括保持透镜的透镜框架和在透镜框架能够在与光轴正交的平面中可移动的状态下保持透镜框架的保持框架。 在保持框架和透镜的至少一个保持框架上，至少将保持框架设置在沿透镜框架被重力提升的方向上产生力的偏置装置。
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