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    • 91. 发明授权
    • Lens apparatus and imaging apparatus
    • 透镜装置和成像装置
    • US07577350B2
    • 2009-08-18
    • US11689985
    • 2007-03-22
    • Tomoyuki Nakamura
    • Tomoyuki Nakamura
    • G03B17/00G02B7/28
    • G02B7/08G03B3/10G03B13/36G03B17/14H04N5/2254H04N5/23212
    • A lens apparatus configured to be mountable on a camera body having an image sensor includes a first focus lens unit, a splitting optical unit disposed between the first focus lens unit and the image sensor, a second focus lens unit disposed between the splitting optical unit and the image sensor, the second focus lens unit being movable from an initial position along an optical axis to vary a focusing state, a focusing state detection unit configured to detect the focusing state using a light flux from the splitting optical unit, an actuator configured to drive the first focus lens unit, and a controller configured to control driving of the actuator according to an output from the focusing state detection unit. The controller stops driving of the actuator if the second focus lens unit is located at a position different from the initial position.
    • 一种被配置为安装在具有图像传感器的相机主体上的透镜装置,包括:第一聚焦透镜单元,设置在第一聚焦透镜单元和图像传感器之间的分离光学单元;第二聚焦透镜单元,设置在分离光学单元和 所述图像传感器,所述第二聚焦透镜单元可以沿着光轴从初始位置移动以改变聚焦状态;聚焦状态检测单元,被配置为使用来自所述分割光学单元的光束来检测聚焦状态;致动器,被配置为 驱动第一对焦透镜单元,以及控制器,被配置为根据聚焦状态检测单元的输出来控制致动器的驱动。 如果第二聚焦透镜单元位于与初始位置不同的位置,则控制器停止驱动致动器。
    • 93. 发明申请
    • ZOOM LENS AND IMAGE PICKUP APPARATUS
    • 变焦镜头和图像拾取器
    • US20090046375A1
    • 2009-02-19
    • US12187338
    • 2008-08-06
    • Tsuyoshi WakazonoTomoyuki Nakamura
    • Tsuyoshi WakazonoTomoyuki Nakamura
    • G02B15/20
    • G02B15/173G02B13/18
    • A zoom lens has, in order from the object side to the image side, a first lens unit that does not move during zooming and has positive refractive power, a second lens unit that performs zooming and has negative refractive power, a third lens unit that corrects image plane variation caused by zooming and has negative refractive power, and a fourth lens unit that does not move during zooming and has positive refractive power. The first lens unit has, in order from the object side to the image side, a first lens subunit that does not move during focusing and has negative refractive power, a second lens subunit that is configured to move along the optical axis during focusing and has positive refractive power, a third lens subunit that does not move during focusing and has positive refractive power. The second lens subunit has at least one aspherical lens surface AS12.
    • 变焦透镜从物体侧到图像侧依次具有在变焦期间不移动并具有正折射力的第一透镜单元,执行变焦并具有负折射力的第二透镜单元,具有负屈光力的第二透镜单元, 校正由变焦引起的图像平面变化并具有负屈光力,以及在变焦期间不移动并具有正屈光力的第四透镜单元。 第一透镜单元从物体侧到像侧依次具有在聚焦期间不移动并具有负折光力的第一透镜子单元,配置成在聚焦期间沿着光轴移动的第二透镜子单元,并且具有 正屈光力,在聚焦期间不移动并具有正屈光力的第三透镜子单元。 第二透镜子单元具有至少一个非球面透镜表面AS12。
    • 95. 发明授权
    • Method of polymerizing vinyl chloride
    • 聚合氯乙烯的方法
    • US5066744A
    • 1991-11-19
    • US448637
    • 1989-12-11
    • Shuji SuyamaTomoyuki Nakamura
    • Shuji SuyamaTomoyuki Nakamura
    • C08F4/28C08F4/36C08F14/00C08F14/06
    • C08F14/06
    • A polyvinyl chloride polymer or copolymer having excellent thermal resistance and being free from FEs and offensive smell can be obtained in a high yield through a polymerization reaction of vinyl chloride monomer alone or together with a vinyl monomer copolymerizable therewith by the use of a combination system polymerization initiator consisting of (A) .alpha.,.alpha.'-bis(neodecanoylperoxy)-diisopropylbenzene, and (B) at least one of peroxy ester, diacyl peroxide and peroxy dicarbonate, each of which has a 10-hour half-life period temperature within the range of 40.degree.-65.degree. C. in its 0.1 mol concentration solution in benzene.
    • 通过单独的氯乙烯单体或与其共聚的乙烯基单体的聚合反应,可以通过使用组合体系聚合法获得具有优异耐热性且不含有FE和异味的聚氯乙烯聚合物或共聚物 由(A)α,α'-双(新癸酰过氧基) - 二异丙基苯和(B)过氧酯,二酰基过氧化物和过氧化二碳酸酯中的至少一种引发剂组成的引发剂,其中每一个在其内具有10小时的半衰期温度 范围为40°-65℃,在其0.1mol浓度的苯溶液中。
    • 100. 发明授权
    • Zoom lens and image pickup apparatus including the same
    • 缩放透镜和包括其的图像拾取装置
    • US08593736B2
    • 2013-11-26
    • US13438888
    • 2012-04-04
    • Tomoyuki Nakamura
    • Tomoyuki Nakamura
    • G02B15/14
    • G02B15/173
    • A zoom lens includes, in order from an object side: a first lens unit having a positive refractive power which does not move for varying magnification; a second lens unit having a negative refractive power which moves for varying magnification; a third lens unit having a positive refractive power which moves for varying magnification; and a fourth lens unit having a positive refractive power which does not move for varying magnification, in which: the first lens unit includes a first sub lens unit which does not move for focusing and a second sub lens unit having a positive refractive power which moves for focusing; the first sub lens unit includes three lenses having negative, positive, and positive refractive powers; and each of the elements is appropriately set.
    • 变焦透镜从物体的顺序依次包括具有正偏转光焦度的第一透镜单元,其不会为变化的倍率而移动; 具有负折射力的第二透镜单元,其以变化的倍率移动; 具有正折射力的第三透镜单元,其移动以变化放大倍数; 以及具有正折射力的第四透镜单元,其对于变化的放大倍率不移动,其中:第一透镜单元包括不移动用于聚焦的第一子透镜单元和具有正折射力的第二子透镜单元, 用于聚焦; 第一子透镜单元包括具有负的,正的和正的折射光焦度的三个透镜; 并且适当地设置每个元件。