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    Apparatus for and method of capturing radiation image
    31.
    发明申请
    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：US20070201617A1

    公开(公告)日：2007-08-30

    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 ,  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。

    Camera capable of varying size of image plane
    32.
    发明授权
    Camera capable of varying size of image plane 失效
    相机能够改变图像平面的大小

    公开(公告)号：US6134389A

    公开(公告)日：2000-10-17

    申请号：US691909

    申请日：1996-08-01

    申请人： Hiroki Nakayama ,  Hideo Taka

    发明人： Hiroki Nakayama ,  Hideo Taka

    IPC分类号： G03B1/50 ,  H04N5/232 ,  H04N5/262 ,  G03B17/00

    CPC分类号： H04N5/2621 ,  G03B1/50 ,  H04N5/232 ,  H04N5/262

    摘要： In a camera of the kind arranged to obtain an object image through a photo-taking lens at an arbitrary image plane size on a photosensitive surface by using an image plane size varying member, either the nearest shootable distance of the photo-taking lens is arranged to become shorter than the normally nearest shootable distance or the magnification varying range of the power varying part of the photo-taking lens is arranged to be expanded on the wide-angle side, as the diagonal length of the image plane size becomes shorter.

    摘要翻译： 在通过使用图像面尺寸可变构件在感光表面上以任意图像平面尺寸通过摄影镜头获得物体图像的相机中，布置摄影镜头的最近的可拍摄距离 随着图像平面尺寸的对角线长度变短，变得比通常最近的拍摄距离或照相机的动力变化部分的放大率变化范围更短地在广角侧上扩展。

    Rear focusing zoom lens
    33.
    发明授权
    Rear focusing zoom lens 失效
    后聚焦变焦镜头

    公开(公告)号：US6094312A

    公开(公告)日：2000-07-25

    申请号：US121093

    申请日：1998-07-23

    申请人： Hiroki Nakayama

    发明人： Hiroki Nakayama

    IPC分类号： G02B15/173 ,  G02B15/14

    CPC分类号： G02B15/173

    摘要： A zoom lens having a first lens unit remaining stationary and having positive refracting power, a second lens unit having negative refracting power, a third lens unit having positive refracting power, a fourth lens unit having negative refracting power and a fifth lens unit remaining stationary and having positive refracting power to perform zooming by moving at least the second lens unit and the fourth lens unit and to perform focusing an infinite object to a nearest object by moving the fourth lens unit toward the image surface.

    摘要翻译： 具有第一透镜单元保持静止且具有正折射力的变焦透镜，具有负折射力的第二透镜单元，具有正折射率的第三透镜单元，具有负折射率的第四透镜单元和保持静止的第五透镜单元， 具有正折射力以通过至少移动第二透镜单元和第四透镜单元进行变焦，并且通过将第四透镜单元朝向图像表面移动来将无限大的物体聚焦到最近的物体。

    Zoom lens of retrofocus type
    34.
    发明授权
    Zoom lens of retrofocus type 失效
    变焦镜头

    公开(公告)号：US06081389A

    公开(公告)日：2000-06-27

    申请号：US123442

    申请日：1998-07-28

    申请人： Hidemi Takayama ,  Hiroki Nakayama ,  Akihisa Horiuchi ,  Fumihito Wachi

    发明人： Hidemi Takayama ,  Hiroki Nakayama ,  Akihisa Horiuchi ,  Fumihito Wachi

    IPC分类号： G02B13/04 ,  G02B15/177 ,  G02B15/14 ,  G02B5/18

    CPC分类号： G02B13/22 ,  G02B13/04 ,  G02B15/177

    摘要： A zoom lens of the retrofocus type includes, in order from a longer-distance conjugate point side to a shorter-distance conjugate point side, a front lens unit of negative refractive power, and a rear lens unit of positive refractive power, wherein a separation between the front lens unit and the rear lens unit varies according to variation of magnification, and at least one of the front lens unit and the rear lens unit is provided with a diffractive optical element.

    摘要翻译： 后焦点类型的变焦镜头包括从较长距离共轭点侧到较短距离共轭点侧依次具有负屈光力的前透镜单元和正屈光力的后透镜单元，其中分离 前透镜单元和后透镜单元之间根据放大率的变化而变化，并且前透镜单元和后透镜单元中的至少一个设置有衍射光学元件。

    Zoom Lens
    35.
    发明授权
    Zoom Lens 失效
    变焦镜头

    公开(公告)号：US5111338A

    公开(公告)日：1992-05-05

    申请号：US654191

    申请日：1991-02-12

    申请人： Hiroki Nakayama

    发明人： Hiroki Nakayama

    IPC分类号： G02B15/177

    CPC分类号： G02B15/177

    摘要： A zoom lens comprising, from front to rear, a first lens unit of negative power, a seconde lens unit of positive power, a third lens unit of positive power and a fourth lens unit of negative power, wherein zooming from the wide-angle end to the telephoto end is performed by moving at least the second and fourth lens units toward the object side in such a way that the air separations between the first and second lens units and between the third and fourth lens units are shorter in the telephoto end than in the wide-angle end.

    摘要翻译： 一种变焦透镜，包括从前到后具有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和负功率的第四透镜单元，其中，从广角端 通过使第二透镜单元和第四透镜单元朝向物体侧移动，使得第一透镜单元和第二透镜单元之间以及第三透镜单元和第四透镜单元之间的空气分离在远摄端较短，从而进行远摄端的处理比 在广角端。

    Objective of variable focal length
    37.
    发明授权
    Objective of variable focal length 失效
    可变焦距的目的

    公开(公告)号：US4776679A

    公开(公告)日：1988-10-11

    申请号：US872139

    申请日：1986-06-09

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

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

    IPC分类号： G02B15/14 ,  G02B3/00 ,  G02B15/16 ,  G02B15/173

    CPC分类号： G02B15/173

    摘要： A variable focal length objective of which at least one of a pulrality of lens units is moved to vary the image magnification, wherein at least one of the plurality of lens units has at least one refractive index distribution type lens provided with a condition of N.sub.1 >0 as, taking the distance from the optical axis to a radial direction as h, the refractive index distribution is expressed by N(h)=N.sub.0 +N.sub.1 h.sup.2 +N.sub.2 h.sup.4 +N.sub.3 h.sup.6 +. . . (N.sub.0, N.sub.1, N.sub.2 . . . are constants), and satisfies the following conditions: ##EQU1## where fmax: the maximum focal length;fmin: the minimum focal length;Lmin: the optical total length when the total length is shortest;Y: the maximum image height;N.sub.1 *: the coefficient of h.sup.2 of the refractive index distribution type lens having a refractive index distribution of N.sub.1 >0;D*: the lens thickness of the refractive index distribution type lens having the refractive index distribution of N.sub.1 >0.

    摘要翻译： 可变焦距物镜，其中移动透镜单元的脉冲中的至少一个以改变图像放大率，其中多个透镜单元中的至少一个具有至少一个折射率分布型透镜，其具有N1> 0，从光轴到径向的距离为h，折射率分布由N（h）= N0 + N1h2 + N2h4 + N3h6 +表示。 。 。 （N0，N1，N2 ...是常数），满足以下条件： SIGMA 2N1 * D *> 0.2 / fmin其中fmax：最大焦距; fmin：最小焦距; Lmin：总长度最短时的光学总长度; Y：最大图像高度; N1 *：折射率分布为N1> 0的折射率分布型透镜的h2的系数; D *：折射率分布为N1> 0的折射率分布型透镜的透镜厚度。

    Zoom lens and image pickup apparatus including same
    40.
    发明授权
    Zoom lens and image pickup apparatus including same 有权
    缩放透镜和包括其的图像拾取装置

    公开(公告)号：US08264779B2

    公开(公告)日：2012-09-11

    申请号：US12895575

    申请日：2010-09-30

    申请人： Hiroki Nakayama ,  Chiaki Inoue ,  Masaru Sakamoto

    发明人： Hiroki Nakayama ,  Chiaki Inoue ,  Masaru Sakamoto

    IPC分类号： G02B15/14

    CPC分类号： G02B15/173 ,  G02B13/009

    摘要： A zoom lens includes, in order from an object side to an image side and arranged along an optical axis, first to fifth lens units having positive, negative, positive, positive or negative, and positive refractive power, respectively. When zooming, the second lens unit moves monotonically to the image side, the third lens unit moves to the object side in a convex locus, the fifth lens unit moves nonlinearly, and the first and fourth lens units do not move. The fourth lens unit includes a first sub lens unit and a second sub lens unit; the first sub lens unit is an image-stabilizing lens unit that includes a first lens having negative refractive power and a second lens having positive or negative refractive power. The focal length of the fourth lens unit, the focal length of the entire system at the wide-angle end, the Abbe numbers of the materials of the first and second lenses are set appropriately based on predetermined conditions.

    摘要翻译： 变焦透镜从物体侧到像侧依次沿光轴布置，分别具有正，负，正，正或负和正屈光力的第一至第五透镜单元。 当变焦时，第二透镜单元单调地移动到图像侧，第三透镜​​单元以凸形轨迹移动到物体侧，第五透镜单元非线性移动，第一和第四透镜单元不移动。 第四透镜单元包括第一子透镜单元和第二子透镜单元; 第一子透镜单元是包括具有负折光力的第一透镜和具有正或负折射光焦度的第二透镜的图像稳定透镜单元。 基于预定条件适当地设置第四透镜单元的焦距，广角端处的整个系统的焦距，第一和第二透镜的材料的阿贝数。