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    • 31. 发明授权
    • Zoom lens capable of focussing at close range
    • 变焦镜头能够在近距离聚焦
    • US5760968A
    • 1998-06-02
    • US606937
    • 1996-02-26
    • Motoyuki OhtakeKenzaburo Suzuki
    • Motoyuki OhtakeKenzaburo Suzuki
    • G02B15/17G02B15/14
    • G02B15/17
    • To provide a zoom lens in which focussing is possible with a small displacement and which is capable of close range focussing with superior imaging performance. The present invention provides a zoom lens capable of focussing at close range, of the type equipped with at least two lens units having negative refractive powers and arranged so as to be adjacent to each other, wherein focussing on close range objects is accomplished by causing one of the at least two lens units to move along the optical axis; and, the conditions: (.beta.a-.beta.a.sup.-1).sup.-2 0 are satisfied, where .beta.a is the lateral magnification of the close range focussing lens unit at the maximum telephoto state in an infinite focus state, and .beta.b is the lateral magnification of the close range focussing lens unit at the maximum wide-angle state in an infinite focus state.
    • 为了提供一种变焦透镜,其中可以以小位移进行聚焦,并且能够以优异的成像性能聚焦。 本发明提供一种能够在近距离聚焦的变焦透镜,该变焦透镜配备有具有负屈光力的至少两个透镜单元并且被布置为彼此相邻,其中聚焦在近距离物体上是通过使一个 所述至少两个透镜单元沿着所述光轴移动; 并且,条件(βa-βa-1)-2 <0.8 beta a /βb> 0满足,其中βa是近距离聚焦透镜单元在无限焦中的最大远摄状态下的横向放大率 状态,βb是近距离聚焦透镜单元在无限焦点状态下处于最大广角状态的横向放大率。
    • 32. 发明授权
    • Zoom lens with vibration reduction function
    • 变焦镜头具有减震功能
    • US5585966A
    • 1996-12-17
    • US363340
    • 1994-12-23
    • Kenzaburo Suzuki
    • Kenzaburo Suzuki
    • G02B15/16G02B15/173G02B27/64G03B5/00G03B5/06G02B15/14
    • G02B15/173G02B27/646
    • A zoom lens includes, in the following order from the object side, a first lens group having a positive refracting power, a second lens group having a negative refracting power, a third lens group having a positive refracting power, and a fourth lens group having a positive refracting power, and also includes a vibration reduction mechanism for attaining vibration reduction by shifting the third lens group or a partial lens group in the third lens group in a direction substantially perpendicular to an optical axis. When zooming is effected from the wide-angle end to the telephoto end, the interval between the first and second lens groups increases, the interval between the second and third lens groups decreases, and the interval between the third and fourth lens groups changes. The zoom lens satisfies the following condition:0.2
    • 变焦透镜从物体侧按照以下顺序包括具有正折射率的第一透镜组,具有负折射力的第二透镜组,具有正折射率的第三透镜组,以及具有正折射率的第四透镜组,以及具有 正折射力,并且还包括通过使第三透镜组中的第三透镜组或部分透镜组在基本上垂直于光轴的方向上移动来实现减振的减振机构。 当从广角端到望远端进行变焦时,第一和第二透镜组之间的间隔增加,第二和第三透镜组之间的间隔减小,并且第三和第四透镜组之间的间隔发生变化。 变焦镜头满足以下条件:0.2
    • 35. 发明授权
    • Zoom lens systems
    • 变焦镜头系统
    • US06909846B2
    • 2005-06-21
    • US10742894
    • 2003-12-23
    • Kenzaburo Suzuki
    • Kenzaburo Suzuki
    • G02B15/163G02B13/18G02B15/177G03B5/00H04N5/262
    • G02B15/177
    • A zoom lens system having an exit pupil far away from the image plane, zoom ratio of about three, and in particular having compactness and high optical performance includes, in order from an object, a first lens group having negative refractive power, an aperture stop, a second lens group having positive refractive power, and a third lens group having positive refractive power. When zooming from a wide-angle end state to a telephoto end state, the first and second lens groups are moved and the third lens group is fixed such that a distance between the first lens group and the second lens group varies, and a distance between the second lens group and the third lens group increases. The second lens group is composed of four lenses or less and includes a diffractive optical surface formed on a lens surface except the most object side lens surface.
    • 具有远离图像平面的出射光瞳,大约三倍的变焦倍率,特别是具有紧凑性和高光学性能的变焦透镜系统包括从物体起依次具有负屈光力的第一透镜组,孔径光阑 具有正屈光力的第二透镜组和具有正折光力的第三透镜组。 当从广角端状态变焦到望远端状态时,移动第一透镜组和第二透镜组,并且固定第三透镜组,使得第一透镜组和第二透镜组之间的距离变化,并且第三透镜组之间的距离 第二透镜组和第三透镜组增加。 第二透镜组由四个透镜或更少的透镜组成,并且包括形成在除了最物体侧透镜表面之外的透镜表面上的衍射光学表面。
    • 37. 发明授权
    • Front tele-converter, and front tele-converter having vibration-reduction function
    • 前置遥控转换器和具有减振功能的前置遥控转换器
    • US06563644B2
    • 2003-05-13
    • US10116058
    • 2002-04-05
    • Kenzaburo Suzuki
    • Kenzaburo Suzuki
    • G02B2764
    • G02B27/646G02B13/02
    • To provide a front tele-converter that may cause less aberrations and has a superior imaging quality though it has a high magnification, disclosed is a front tele-converter TC having an afocal magnification higher than 1.9, which is detachably mountable to a photo-taking lens L on its object side. The front tele-converter has, in order from the object side, a positive lens group GF having a positive refractive power and a negative lens group GR having a negative refractive power. The positive lens group GF has a positive cemented lens, the negative lens group GR has a positive lens with its convex surface facing the image side, a vibration-reduction lens group GV comprising a lens group consisting of part or the whole of the negative lens group GR and having a negative refractive power is movable in a direction disposed at substantially right angles with the optical axis to effect vibration reduction, and the lens groups fulfill a specific condition.
    • 为了提供可以产生较少像差并且具有优异的成像质量的前置远摄转换器,尽管其具有高放大倍数,公开了具有高于1.9的无焦点放大率的前置远摄转换器TC,其可拆卸地安装到拍摄 镜头L在其物体侧。 前方远摄转换器从物体侧依次具有具有正折光力的正透镜组GF和具有负折光力的负透镜组GR。 正透镜组GF具有正粘合透镜,负透镜组GR具有其凸面朝向像侧的正透镜,包括透镜组的减振透镜组GV包括部分或全部负透镜 具有负屈光力的组GR可在与光轴基本成直角设置的方向上移动以实现减振,并且透镜组满足特定条件。
    • 38. 发明授权
    • Zoom lens having a long back focal length with vibration reduction function
    • 具有减震功能的具有长后焦距的变焦镜头
    • US06285501B1
    • 2001-09-04
    • US09492179
    • 2000-01-27
    • Kenzaburo Suzuki
    • Kenzaburo Suzuki
    • G02B2764
    • G02B15/17G02B27/646
    • A high-performance zoom lens having a long back focal length and thus ideally suitable to electronic imaging equipment. The zoom lens comprises a first lens group G1 having a positive refractive power, a second lens group G2 having a, negative refractive power, a third lens group G3 having a negative refractive power, a fourth lens group G4 having a positive refractive power, and a fifth lens group G5 having a positive refractive power. When zooming from the wide-angle end to the telephoto end, the air gap between the first lens group G1 and the second lens group G2 increases, the air gap between the second lens group G2 and the third lens group G3 changes, and the air gap between the fourth lens group G4 and the fifth lens group G5 changes. Vibration reduction is attained by displacing (shifting) a vibration reduction lens group G4v consisting of the fourth lens group G4 or a partial lens group in said fourth lens group in a direction substantially perpendicular to the optical axis.
    • 具有长后焦距的高性能变焦镜头,因此理想地适用于电子成像设备。 变焦透镜包括具有正折光力的第一透镜组G1,具有负折射光焦度的第二透镜组G2,具有负折光力的第三透镜组G3,具有正折光力的第四透镜组G4以及 具有正屈光力的第五透镜组G5。 当从广角端到望远端变焦时,第一透镜组G1和第二透镜组G2之间的空气间隙增加,第二透镜组G2和第三透镜组G3之间的气隙变化,空气 第四透镜组G4和第五透镜组G5之间的间隙变化。通过将由第四透镜组G4或部分透镜组组成的减振透镜组G4v移位(移动)在第四透镜组中的方向 基本垂直于光轴。
    • 39. 发明授权
    • Zoom lens with an anti-vibration function
    • 变焦镜头具有抗振功能
    • US6025962A
    • 2000-02-15
    • US926800
    • 1997-09-10
    • Kenzaburo Suzuki
    • Kenzaburo Suzuki
    • G02B15/173G02B27/64G02B9/60
    • G02B15/173G02B27/646
    • A zoom lens system with an anti-vibration function, which is provided with, in order from the object end: a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power, a fourth lens group having a negative refractive power, and a fifth lens group having a positive refractive power, and whose focal length at the wide-angle end is shorter than the diagonal width of the image plane of the zoom lens system, at least one lens group selected from the first lens group and the fifth lens group moves toward the object end and all of the distances between each of the lens groups are changed when zooming from the wide-angle end to the telephoto end. At least one lens group selected from the second, third, and fourth lens groups moves in a direction substantially perpendicular to the optical axis of the zoom lens system when preventing vibration.
    • 一种具有抗振功能的变焦透镜系统,其从目标开始依次设置:具有正折光力的第一透镜组,具有负屈光力的第二透镜组,具有正屈光力的第三透镜组 具有负屈光力的第四透镜组和具有正折光力的第五透镜组,并且其广角端处的焦距比变焦透镜系统的像面的对角线宽度短, 从第一透镜组和第五透镜组中选择的至少一个透镜组朝向对象端移动,并且当从广角端到望远端变焦时,各透镜组之间的所有距离都发生变化。 当防止振动时,从第二,第三和第四透镜组中选择的至少一个透镜组在基本上垂直于变焦透镜系统的光轴的方向上移动。