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    • 3. 发明授权
    • Photographic camera system
    • 照相机系统
    • US5196880A
    • 1993-03-23
    • US593980
    • 1990-10-09
    • Kenji IshibashiMinoru KuwanaYasuaki SeritaTetsuya ArimotoHiroshi OotsukaYoshihiro HaraHiroshi UedaMasayuki Ueyama
    • Kenji IshibashiMinoru KuwanaYasuaki SeritaTetsuya ArimotoHiroshi OotsukaYoshihiro HaraHiroshi UedaMasayuki Ueyama
    • G02B7/10
    • G02B7/102
    • A camera system which comprises a photo-taking lens assembly of varifocal type including a zooming lens and a focusing lens; a manipulatable member; a zooming drive device for driving the zooming lens during a manipulation of the manipulatable member; a focusing device for driving the focusing lens; a focal length detector for sequentially detecting a current focal length of the photo-taking lens assembly; a zooming amount calculator operable to repeatedly add or subtract a predetermined amount to or from the current focal length during the manipulation of the manipulatable member thereby to sequentially update a target focal length used as a reference for the drive of the zooming lens; a first control adapted to receive the target focal length updated by the zooming amount calculator for calculating the amount of deviation in focus which would occur before the target focal length is attained and also for controlling the focusing device so as to eliminate the amount of deviation in focus which has been calculated; and a second control for controlling the zooming drive device, when the manipulation of the manipulatable member is released, so as to drive the zooming lens to a position where the target focal length calculated by the zooming amount calculator is attained.
    • 一种照相机系统,包括变焦镜头类型的摄影镜头组件,包括变焦镜头和聚焦透镜; 一个可操纵的成员; 用于在可操纵构件的操纵期间驱动变焦镜头的变焦驱动装置; 用于驱动聚焦透镜的聚焦装置; 用于顺序地检测所述摄影镜头组件的当前焦距的焦距检测器; 变焦量计算器,其可操作以在操纵可操纵构件期间反复地向或从当前焦距增加或减去预定量,从而顺序地更新用作变焦透镜驱动的基准的目标焦距; 适于接收由变焦量计算器更新的目标焦距的第一控制器,用于计算在达到目标焦距之前将发生的焦点偏离量,并且还用于控制聚焦装置,以消除偏转量 已计算的重点; 以及第二控制,用于当解除可操纵构件的操纵时,控制变焦驱动装置,以便将变焦透镜驱动到达到由变焦量计算器计算的目标焦距的位置。
    • 4. 发明授权
    • Zoom optical system and image pickup apparatus
    • 变焦光学系统和摄像设备
    • US07193786B2
    • 2007-03-20
    • US11436838
    • 2006-05-18
    • Tetsuya ArimotoMakoto JinYoshihito Souma
    • Tetsuya ArimotoMakoto JinYoshihito Souma
    • G02B15/14
    • G02B15/177
    • A zoom optical system according to the present invention is provided with, in order from an object side thereof: a first lens group having a negative refractive power; a second lens group having a positive refractive power; a third lens group having a negative refractive power; and a fourth lens group having a positive refractive power. The zoom optical system moves at least the second lens group and the third lens group for zooming operation from a wide-angle end to a telephoto end. The zoom optical system moves the third lens group for a focusing operation. The first lens group is provided with, in order from the object side of the zoom optical system, a meniscus lens having a negative refractive power whose concave surface faces an image side of the zoom optical system, a reflective optical element, and at least one lens.
    • 根据本发明的变焦光学系统从其物体侧依次设置:具有负屈光力的第一透镜组; 具有正屈光力的第二透镜组; 具有负屈光力的第三透镜组; 以及具有正屈光力的第四透镜组。 变焦光学系统至少将第二透镜组和第三透镜组从广角端移动到远摄端。 变焦光学系统移动第三透镜组进行聚焦操作。 第一透镜组从变焦光学系统的物体侧依次设置有凹面朝向变焦光学系统的像侧的负屈光力的弯月形透镜,反射型光学元件,以及至少一个 镜片。
    • 8. 发明申请
    • Zoom lens and image capture apparatus
    • 变焦镜头和摄像设备
    • US20080165428A1
    • 2008-07-10
    • US11902723
    • 2007-09-25
    • Tetsuya ArimotoYasushi Yamamoto
    • Tetsuya ArimotoYasushi Yamamoto
    • G02B15/14
    • G02B15/173
    • There is provided a zoom lens including, in an order from an object side: a first lens group having positive refractive power; a second lens group having negative refractive power; a third lens group having positive refractive power; and a fourth lens group having positive refractive power. During zooming from a wide-angle end to a telephoto end, the first lens group, the third lens group, and the fourth lens group move toward an object side such that a distance between the first lens group and the second lens group increases, a distance between the second lens group and the third lens group decreases, and a distance between the third lens group and the fourth lens group decreases, and the zoom lens satisfies the following conditional formulae (1) and (2): 1.8
    • 提供了一种变焦透镜,包括从物体侧开始的顺序:具有正折射光焦度的第一透镜组; 具有负屈光力的第二透镜组; 具有正折射力的第三透镜组; 以及具有正屈光力的第四透镜组。 在从广角端到长焦端的变焦期间,第一透镜组,第三透镜​​组和第四透镜组朝向物体侧移动,使得第一透镜组和第二透镜组之间的距离增加, 第二透镜组和第三透镜组之间的距离减小,并且第三透镜组和第四透镜组之间的距离减小,并且变焦透镜满足以下条件式(1)和(2):<? -formulae description =“In-line Formulas”end =“lead”?> 1.8 <?in-line-formula description =“In-line Formulas”end =“lead”?> - 2.5 <2xD3 / f2 <-1.5。 (2)<?in-line-formula description =“In-line Formulas”end =“tail”?>
    • 9. 发明申请
    • Zoom optical system and image pickup apparatus
    • 变焦光学系统和摄像设备
    • US20060268426A1
    • 2006-11-30
    • US11436838
    • 2006-05-18
    • Tetsuya ArimotoMakoto JinYoshihito Souma
    • Tetsuya ArimotoMakoto JinYoshihito Souma
    • G02B15/14
    • G02B15/177
    • A zoom optical system according to the present invention is provided with, in order from an object side thereof: a first lens group having a negative refractive power; a second lens group having a positive refractive power; a third lens group having a negative refractive power; and a fourth lens group having a positive refractive power. The zoom optical system moves at least the second lens group and the third lens group for zooming operation from a wide-angle end to a telephoto end. The zoom optical system moves the third lens group for a focusing operation. The first lens group is provided with, in order from the object side of the zoom optical system, a meniscus lens having a negative refractive power whose concave surface faces an image side of the zoom optical system, a reflective optical element, and at least one lens.
    • 根据本发明的变焦光学系统从其物体侧依次设置:具有负屈光力的第一透镜组; 具有正屈光力的第二透镜组; 具有负屈光力的第三透镜组; 以及具有正屈光力的第四透镜组。 变焦光学系统至少将第二透镜组和第三透镜组从广角端移动到远摄端。 变焦光学系统移动第三透镜组进行聚焦操作。 第一透镜组从变焦光学系统的物体侧依次设置有凹面朝向变焦光学系统的像侧的负屈光力的弯月形透镜,反射型光学元件,以及至少一个 镜片。
    • 10. 发明授权
    • Compact high ratio zoom lens system
    • 紧凑型高倍率变焦镜头系统
    • US5185678A
    • 1993-02-09
    • US728207
    • 1991-07-10
    • Tetsuya Arimoto
    • Tetsuya Arimoto
    • G02B15/173
    • G02B15/173
    • A zoom lens system comprises from the object side, a first lens unit of positive refractive power, a second lens unit of negative refractive power, a third lens unit of positive refractive power, a fourth lens unit of positive refractive power, and a fifth lens unit of negative refractive power. The first, third and fourth lens units move towards the object side in a zooming operation from the shortest focal length condition to the longest focal length condition. Further, the zoom lens system fulfills the following conditions:0.4
    • 变焦透镜系统包括物体侧,具有正屈光力的第一透镜单元,负折光力的第二透镜单元,正屈光力的第三透镜单元,正折光力的第四透镜单元和第五透镜 负屈光力单位。 第一,第三和第四透镜单元在从最短焦距条件到最长焦距条件的变焦操作中朝向物体侧移动。 此外,变焦透镜系统满足以下条件:0.4 <| f2| / fw <0.5 1.0 <| f5| / f4 <5.0 2.5