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    • 5. 发明授权
    • Zoom lens and imaging apparatus
    • 变焦镜头和成像设备
    • US07411731B2
    • 2008-08-12
    • US11553281
    • 2006-10-26
    • Motoyuki OhtakeTsutomu NaitouTakuya TsutsumiEiji YanoKen TanakaTatsuyuki Takahashi
    • Motoyuki OhtakeTsutomu NaitouTakuya TsutsumiEiji YanoKen TanakaTatsuyuki Takahashi
    • G02B27/64
    • G02B15/173G02B27/646
    • A zoom lens includes a varifocal lens unit including a plurality of movable lens groups, and a prism disposed on an image side of the varifocal lens unit. The prism has an incident plane into which a light flux from the varifocal lens unit enters, and an exit plane from which the light flux is emitted toward an image plane, the exit plane capable of being inclined with respect to an optical axis, the exit plane inclined in accordance with a following conditional expression “α=−f×θ/[Bf(n−1)]”, where α: an angle formed by a normal of the exit plane and the optical axis, f: a focus distance of a whole lens system, θ: a turning angle of a lens system, Bf: a distance from the exit plane of the prism to the image plane along the optical axis, and n: a refraction index of the prism.
    • 变焦透镜包括包括多个可移动透镜组的变焦透镜单元和设置在变焦透镜单元的像侧上的棱镜。 棱镜具有入射平面,来自变焦透镜单元的光束进入入射平面,以及出射平面,光束从该平面朝向像面发射,出射平面能够相对于光轴倾斜,出射面 根据以下条件表达式“α= -fxtheta / [Bf(n-1)]”倾斜的平面,其中α:由出射平面和光轴的法线形成的角度,f: 整个透镜系统,θ:透镜系统的转角,Bf:从棱镜的出射平面到光轴的像面的距离,以及n:棱镜的折射率。
    • 10. 发明授权
    • Lens driving mechanism and image pickup device
    • 透镜驱动机构和图像拾取装置
    • US07652957B2
    • 2010-01-26
    • US11130136
    • 2005-05-17
    • Takuya Tsutsumi
    • Takuya Tsutsumi
    • G11B7/00
    • H04N5/23248G02B27/646H04N5/2254H04N5/23287
    • A lens driving mechanism eccentrically drives at least one lens or lens subunit, hereunder called a correcting lens, in a lens system constituting a taking lens unit in a plane perpendicular to an optical axis direction, and includes a movable frame holding the correcting lens, two coils fixed at a lens barrel where the taking lens unit is disposed, and magnetic circuit formation members generating a magnetic field crossing the coils that are disposed around the correcting lens when viewed in the optical axis direction of the taking lens unit. The members include at least two magnets and yokes disposed at each of the two coils for generating movement forces in different directions perpendicular to the optical axis. The yokes oppose the respective magnets. Either the magnets or the yokes are held by the movable frame, and the other of the magnets and yokes are secured to the lens barrel.
    • 透镜驱动机构在与光轴方向垂直的平面中构成拍摄单元的透镜系统中偏心地驱动至少一个透镜或透镜子单元(以下称为校正透镜),并且包括保持校正透镜的可移动框架 线圈固定在设置有摄影镜头单元的镜筒处,以及磁路形成构件,当从拍摄镜头单元的光轴方向观察时,产生与校正透镜相邻的线圈交叉的磁场。 这些构件包括设置在两个线圈中的每一个处的至少两个磁体和轭,用于在垂直于光轴的不同方向上产生移动力。 轭与相应的磁体相对。 磁铁或磁轭都由可动框架固定,磁铁和磁轭中的另一个固定在镜筒上。