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    • 3. 发明授权
    • Zoom lens and optical apparatus equipped therewith
    • 变焦镜头和配备其的光学仪器
    • US08040615B2
    • 2011-10-18
    • US12528448
    • 2008-02-08
    • Susumu Sato
    • Susumu Sato
    • G02B15/14
    • G02B15/173G02B27/646G03B5/00G03B17/02
    • A zoom lens is provided with comprising a plurality of lens groups including, in order from an object, a first lens group G1 having positive refractive power, a second lens group G2 having negative refractive power, a third lens group G3, and a fourth lens group G4, upon zooming from a wide-angle end state W to a telephoto end state T, a distance between the first lens group G1 and the second lens group G2 increasing, a distance between the second lens group G2 and the third lens group G3 decreasing, and the most image side lens group among the plurality of lens groups moving along an optical axis with a trajectory having convex shape facing the object side, and given conditional expressions being satisfied, thereby excellently correcting chromatic aberration in a farther away shooting range, capable of having excellent optical performance with being compact.
    • 变焦透镜设置有多个透镜组,其包括从物体起依次具有正折光力的第一透镜组G1,具有负折光力的第二透镜组G2,第三透镜​​组G3和第四透镜 组G4在从广角端状态W变焦到望远端状态T时,第一透镜组G1和第二透镜组G2之间的距离增加,第二透镜组G2和第三透镜组G3之间的距离 减少了多个透镜组中的最大像侧透镜组,并且具有面向物体侧的具有凸形的轨迹沿着光轴移动,并且给出条件表达式,从而在更远的拍摄范围内良好地校正色像差, 能够具有优异的光学性能而紧凑。
    • 5. 发明授权
    • Imaging apparatus, imaging method and high zoom ratio zoom lens system
    • 成像设备,成像方法和高倍率变焦镜头系统
    • US07843647B2
    • 2010-11-30
    • US12160568
    • 2007-02-21
    • Susumu Sato
    • Susumu Sato
    • G02B15/14
    • G02B15/173G02B7/021G02B27/0018G02B27/646G03B5/00H04N5/23287
    • Providing an imaging apparatus capable of efficiently using effective pixels of a solid-state imaging device, and securing excellent peripheral light quantity of an image even upon vibration reduction. The imaging apparatus comprising: a high zoom ratio zoom lens 2 including, in order from the object, a first positive group, a second negative group, a third group, a fourth group, and a fifth group, upon zooming the first through fourth groups are moved along an optical axis; an imaging device capturing an image formed by the lens 2; a detector detecting variation in an image position; a driver moving the imaging device substantially perpendicularly to the optical axis; a controller controlling the driver for correcting variation in the image position; and a shield with an aperture for limiting bundle of rays incident on the periphery of the most object side lens in the lens 2; and given condition is satisfied.
    • 提供能够有效地使用固态成像装置的有效像素的摄像装置,并且即使在减少振动时也能确保图像的优异的周边光量。 该成像装置包括:高倍率变焦透镜2,在从第一至第四组变焦时,按照从物体起的顺序包括第一正面组,第二负面组,第三组,第四组和第五组 沿着光轴移动; 捕获由透镜2形成的图像的成像装置; 检测器,检测图像位置的变化; 驾驶员基本上垂直于光轴移动成像装置; 控制驱动器以校正图像位置的变化的控制器; 以及具有用于限制入射在透镜2中的最物体侧透镜的周边上的光线束的光圈的屏蔽件; 并给予条件满意。
    • 6. 发明授权
    • Zoom lens system
    • 变焦镜头系统
    • US07251081B2
    • 2007-07-31
    • US11237668
    • 2005-09-29
    • Susumu Sato
    • Susumu Sato
    • G02B15/14
    • G02B27/646G02B15/173
    • Providing a zoom lens system having a high zoom ratio, a small diameter of the first lens group, capable of being effectively retracted upon retracting the lens barrel. The system includes, in order from an object, a first lens group having positive refractive power, a second lens group having negative refractive power, a third lens group having positive refractive power, a fourth lens group having positive refractive power, and a fifth lens group having positive refractive power. When zooming from a wide-angle end state to a telephoto end state, the first, second, third, and fourth lens groups move along an optical axis and the second lens group moves along a zoom trajectory being concave to the object. The fourth lens group is composed of a front lens group having positive power and a rear lens group having negative power with a space in between. Given conditional expressions are satisfied.
    • 提供具有高变焦比的变焦透镜系统,第一透镜组的小直径,能够在缩回透镜镜筒时有效地缩回。 该系统按照从物体起依次包括具有正折光力的第一透镜组,具有负折光力的第二透镜组,具有正屈光力的第三透镜组,具有正屈光力的第四透镜组,以及第五透镜 具有正屈光力的组。 当从广角端状态变焦到远摄端状态时,第一,第二,第三和第四透镜组沿着光轴移动,并且第二透镜组沿着凹入的物体的变焦轨迹移动。 第四透镜组由具有正光焦度的前透镜组和具有负功率的后透镜组组成,其间具有空间。 给定条件表达式是满意的。
    • 7. 发明申请
    • High zoom ratio zoom lens system
    • 高变焦倍率变焦镜头系统
    • US20070070524A1
    • 2007-03-29
    • US11527394
    • 2006-09-27
    • Susumu Sato
    • Susumu Sato
    • G02B15/14
    • G02B15/173G02B27/646
    • Providing a high zoom ratio zoom lens system having a short total lens length and a small diameter of the first group despite of securing excellent optical performance, a half angle of view of 3.5° or less in the telephoto end, an f-number of 6 or less in the telephoto end, and a zoom ratio of about 10 or more. The system is composed of a first group having positive power, a second group having negative power, a third group having positive power, and a fourth group having positive power. The first group is composed of, in order from the object, a negative meniscus lens having a convex surface facing the object, a first positive lens having a convex surface facing the object, and a second positive lens. All groups moves along the optical axis upon zooming from a wide-angle end to a telephoto end. Given conditions are satisfied.
    • 提供具有短的总透镜长度和第一组的小直径的高变焦倍率变焦透镜系统,尽管确保了优异的光学性能,在望远端为3.5°或更小的半视角,f数为6 或更远的焦距,以及约10以上的变焦比。 该系统由具有正功率的第一组,具有负功率的第二组,具有正功率的第三组和具有正功率的第四组组成。 第一组从物体起依次由具有面向物体的凸面的负弯月形透镜,具有面向物体的凸面的第一正透镜和第二正透镜构成。 从广角端到远摄端,所有群组沿着光轴移动。 给定条件满意。