-
公开(公告)号：US11112681B2
公开(公告)日：2021-09-07
申请号：US16596822
申请日：2019-10-09
Inventor： Hiroyasu Fujinaka
Abstract: There is provided a lens barrel in which is mounted an actuator of a larger size than in a lens barrel of the same size, and with which a lens having a larger mass can be driven. A lens barrel 100 comprises a linear actuator 310 that is disposed more to the outer peripheral side than the outer peripheral surface of a focus lens unit 220, and has two permanent magnets 313, a yoke unit, and a coil 315; and the focus lens unit 220 that holds a focus lens 221 and is driven back and forth along the optical axis direction. The permanent magnets 313 are disposed substantially in parallel and spaced apart, with the same poles facing each other. The yoke unit includes a center yoke portion 316, a back yoke portion 317, and a yoke 318 that magnetically couples the center yoke portion 316 and the back yoke portion 317. The coil 315 is wound around the center yoke portion 316, and its center is offset from the center of the two permanent magnets 313 to the outer peripheral side with respect to the optical axis center of the focus lens 221.
-
公开(公告)号：US10782502B2
公开(公告)日：2020-09-22
申请号：US16317537
申请日：2017-10-05
Inventor： Ryo Miyazawa , Hiroyasu Fujinaka
Abstract: A lens barrel includes a lens frame unit movable along an optical axis, a guide pole configured to guide the lens frame unit along the optical axis of the lens frame unit, a first lens frame holding one end of the guide pole, a guide cover held by the first lens frame, and a fastening member fastening the guide cover to the first lens frame. The guide cover includes a protruding part holding the other end of the guide pole, and protruding along the optical axis. The fastening member fastens the guide cover to the first lens frame through the protruding part.
-
公开(公告)号：US10317697B2
公开(公告)日：2019-06-11
申请号：US14932866
申请日：2015-11-04
Inventor： Hiroyasu Fujinaka
Abstract: Provided is an actuator that increases thrust while reducing mass of a magnetic field generating member including a magnet and a yoke, compared to conventional actuators. An actuator in the present disclosure includes a magnetic field generating member having a multipole-magnetized magnet and a yoke disposed on a first surface of the multipole-magnetized magnet, and a coil member provided in a position confronting a second surface of the multipole-magnetized magnet. The yoke is formed of a member narrower in width than the first surface of the multipole-magnetized magnet.
-
公开(公告)号：US09885850B2
公开(公告)日：2018-02-06
申请号：US15145191
申请日：2016-05-03
Inventor： Tetsuya Uno , Atsushi Hasegawa , Manabu Kobayashi , Hiroyasu Fujinaka
IPC: G02B15/14 , G02B7/02 , G02B7/10 , G03B3/10 , G02B13/00 , G02B7/04 , G02B27/64 , G03B5/00 , G03B17/04 , H04N5/225 , H04N5/232
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.
-
公开(公告)号：US12105346B2
公开(公告)日：2024-10-01
申请号：US17058252
申请日：2019-06-10
Inventor： Hiroyasu Fujinaka
CPC classification number: G02B7/04 , F16C19/50 , F16C29/04 , G02B7/026 , G03B17/14 , H02K41/02 , G02B27/646
Abstract: A lens barrel (10) comprises a holding frame (51); a guide pole (53); a focusing lens unit (52) that is slidably guided by the guide pole (53) and moves in an axial direction; an actuator that moves the focusing lens unit (52) in the axial direction relative to the holding frame (51); and leaf springs (55) that support the guide pole (53) so as to allow movement in the axial direction relative to the holding frame (51), at an amplitude smaller than the stroke of the focusing lens unit (52).
-
Patent Agency Ranking
公开(公告)号：US11340515B2
公开(公告)日：2022-05-24
申请号：US16605194
申请日：2019-02-18
Inventor： Hiroyasu Fujinaka
IPC: G03B3/10 , H02K41/035 , G02B7/08 , G03B13/32 , G03B17/12
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).
-
公开(公告)号：US09513461B2
公开(公告)日：2016-12-06
申请号：US14597285
申请日：2015-01-15
Inventor： Hiroyasu Fujinaka
CPC classification number: G02B7/10 , G02B7/022 , G02B7/102 , G02B27/646
Abstract: A lens barrel includes a cam frame, a zoom motor unit driving the cam frame to rotate, and a fifth group unit engaging with the cam frame through a fifth cam follower. The cam frame is provided with an internal gear engaging with the zoom motor unit, and a fifth cam groove engaging with the fifth cam follower. The fifth cam groove is continuous with a tooth space formed between two adjacent teeth of the internal gear. The fifth cam follower is smaller than the tooth space to pass through the tooth space.
Abstract translation: 镜筒包括凸轮框架，驱动凸轮框架旋转的变焦马达单元，以及通过第五凸轮从动件与凸轮框架接合的第五组单元。 凸轮框架设置有与变焦电动机单元接合的内齿轮，以及与第五凸轮从动件接合的第五凸轮槽。 第五凸轮槽与形成在内齿轮的两个相邻齿之间的齿间隔连续。 第五凸轮从动件小于通过齿空间的齿空间。
-
公开(公告)号：US09360655B2
公开(公告)日：2016-06-07
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。
-
公开(公告)号：US10073237B2
公开(公告)日：2018-09-11
申请号：US15145150
申请日：2016-05-03
Inventor： Tetsuya Uno , Atsushi Hasegawa , Manabu Kobayashi , Hiroyasu Fujinaka
IPC: G02B15/14 , G02B7/10 , G03B3/10 , G02B13/00 , G02B7/04 , G02B27/64 , G03B5/00 , G03B17/04 , H04N5/225 , H04N5/232
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.
-
公开(公告)号：US09864162B2
公开(公告)日：2018-01-09
申请号：US14589538
申请日：2015-01-05
Inventor： Hiroyasu Fujinaka , Tetsuya Uno , Atsushi Hasegawa , Manabu Kobayashi
IPC: G02B7/04 , G02B7/10 , G03B3/10 , G02B13/00 , G02B27/64 , G03B5/00 , G03B17/04 , H04N5/225 , H04N5/232
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.
-
-
-
-
-
-
-
-
-
Search Results
19
records
(took 0.021 seconds)
