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    Apparatus for and method of capturing radiation image
    6.
    发明授权
    Apparatus for and method of capturing radiation image 有权
    用于捕获辐射图像的装置和方法

    公开(公告)号：US07400707B2

    公开(公告)日：2008-07-15

    申请号：US11704944

    申请日：2007-02-12

    申请人： Hiroki Nakayama ,  Tomonari Sendai

    发明人： Hiroki Nakayama ,  Tomonari Sendai

    IPC分类号： H05G1/44 ,  H05G1/42 ,  A61B6/04

    CPC分类号： A61B6/0414 ,  A61B6/502 ,  A61B6/542 ,  A61B6/544 ,  H05G1/30

    摘要： Before a radiation image is captured, a rate of change of an output signal from an integrator, during a given period of time after the integrator has been reset and until a radiation start signal is supplied, is calculated. An offset voltage signal at a desired time is calculated using the rate of change, and is supplied to a voltage correcting circuit. An output signal from the integrator after a radiation X has started being applied to a subject is corrected based on the calculated offset voltage signal. The corrected output signal from the integrator is supplied to an X-ray tube controller for controlling application of the radiation X to the subject.

    摘要翻译： 在拍摄放射线图像之前，计算在积分器被复位之后的给定时间段内并且直到提供辐射开始信号时来自积分器的输出信号的变化率。 使用变化率来计算期望时间的偏移电压信号，并将其提供给电压校正电路。 基于计算出的偏移电压信号来校正在辐射X开始施加到被摄体之后来自积分器的输出信号。 来自积分器的经校正的输出信号被提供给X射线管控制器，用于控制对被摄体的辐射X的施加。

    Zoom lens
    7.
    发明授权
    Zoom lens 失效
    变焦镜头

    公开(公告)号：US5087988A

    公开(公告)日：1992-02-11

    申请号：US738110

    申请日：1991-07-30

    申请人： Hiroki Nakayama

    发明人： Hiroki Nakayama

    IPC分类号： G02B13/18 ,  G02B15/167 ,  G02B15/20

    CPC分类号： G02B15/167

    摘要： A zoom lens of simple structure is disclosed comprising, from front to rear, a first lens unit of positive refractive power, a second lens unit of positive refractive power and a third lens unit of negative refractive refractive power, wherein these three lens units each are constructed from a single block, and zooming from the wide-angle end to the telephoto end is performed by moving the first and third lens units axially toward the object side independent of each other.

    摘要翻译： 公开了一种简单结构的变焦透镜，包括从正面到背面的正屈光力的第一透镜单元，正屈光力的第二透镜单元和负折射光焦度的第三透镜单元，其中这三个透镜单元各自为 通过将第一透镜单元和第三透镜单元轴向地朝向物体侧彼此独立地进行，从单个块构造并且从广角端到望远端的放大进行。

    Compact zoom lens
    8.
    发明授权
    Compact zoom lens 失效
    紧凑型变焦镜头

    公开(公告)号：US5011272A

    公开(公告)日：1991-04-30

    申请号：US329588

    申请日：1989-03-27

    申请人： Hiroki Nakayama ,  Nozomu Kitagishi ,  Jun Hattori ,  Shigeyuki Suda ,  Akihisa Horiuchi

    发明人： Hiroki Nakayama ,  Nozomu Kitagishi ,  Jun Hattori ,  Shigeyuki Suda ,  Akihisa Horiuchi

    IPC分类号： G02B15/16

    CPC分类号： G02B15/161

    摘要： A zoom lens including at least two lens units of which the front one is of positive refractive power and the rear one is of negative refractive power, the units being axially movable to decrease their separation in zooming from the wide angle to the telephoto end. At least one of the lens units is provided with at least one refractive index distribution type lens arranged on a common optical axis of the other lenses in order to achieve a great advance in compactness.

    摘要翻译： 一种变焦透镜，包括至少两个透镜单元，前者具有正折射光焦度，后一个具有负折光力，该单元可轴向移动以减小其从广角变焦到望远端的分离。 透镜单元中的至少一个设置有至少一个折射率分布型透镜，其布置在其它透镜的公共光轴上，以便实现紧凑性的大的进步。

    Refractive index distribution type meniscus lens and optics
    9.
    发明授权
    Refractive index distribution type meniscus lens and optics 失效
    折射率分布型弯月透镜和光学元件

    公开(公告)号：US4974947A

    公开(公告)日：1990-12-04

    申请号：US823285

    申请日：1986-01-28

    申请人： Nozomu Kitagishi ,  Hiroki Nakayama

    发明人： Nozomu Kitagishi ,  Hiroki Nakayama

    IPC分类号： G02B9/00 ,  G02B3/00 ,  G02B9/02 ,  G02B9/04

    CPC分类号： G02B3/0087

    摘要： A refractive index distribution type meniscus-shaped single lens characterized in that it has a refractive index distribution in which the refractive index decreases along the optic axis thereof from a convex surface to a concave surface and the difference .DELTA.N in refractive index between the convex surface and the concave surface on the optic axis satisfies .DELTA.N.gtoreq.0.15.

    摘要翻译： 一种折射率分布型弯液面状单透镜，其特征在于，其具有其折射率分布，其折射率沿其光轴从凸面向凹面减小，凸面的折射率差ΔTA 并且光轴上的凹表面满足DELTA N> / = 0.15。

    Finder of variable magnification
    10.
    发明授权
    Finder of variable magnification 失效
    Finder的可变放大倍数

    公开(公告)号：US4842395A

    公开(公告)日：1989-06-27

    申请号：US159471

    申请日：1988-02-19

    申请人： Yasuhisa Sato ,  Nozomu Kitagishi ,  Yasuyuki Yamada ,  Hiroki Nakayama ,  Kouji Oizumi

    发明人： Yasuhisa Sato ,  Nozomu Kitagishi ,  Yasuyuki Yamada ,  Hiroki Nakayama ,  Kouji Oizumi

    IPC分类号： G02B25/00 ,  G02B15/16 ,  G02B15/177 ,  G02B23/14 ,  G03B13/12

    CPC分类号： G02B15/177 ,  G02B23/145

    摘要： The disclosed variable magnification finder includes, from front to rear, a first lens unit of negative power, a second lens unit of positive power, a third lens unit of positive power, the first, second and third lens units constituting an objective lens of positive power, and an eyepiece of positive power. The first and second lens units form a finder image on a plane just in front of the third lens unit. The second lens unit is moved axially forward to increase the image magnification, while the shift of diopter of the finder is simultaneously compensated for by moving the first lens unit.

    摘要翻译： 所公开的可变倍率取景器包括从前到后的负功率的第一透镜单元，正光焦度的第二透镜单元，正光焦度的第三透镜单元，构成正的物镜的第一，第二和第三透镜单元 权力和一个正面力量的目镜。 第一和第二透镜单元在刚好在第三透镜单元前面的平面上形成取景器图像。 第二透镜单元轴向移动以增加图像放大率，同时通过移动第一透镜单元来同时补偿取景器的屈光度偏移。