公开(公告)号：US06172819B2

公开(公告)日：2001-01-09

申请号：US09173714

申请日：1998-10-16

申请人： Takashi Enomoto ,  Takayuki Ito

发明人： Takashi Enomoto ,  Takayuki Ito

IPC分类号： G02B1514

CPC分类号： G02B15/161

摘要： A zoom lens system which includes a positive first lens group and a negative second lens group, in this order from the object side; wherein zooming is performed by moving the first lens group and the second lens group, and by varying the distance between the first lens group and the second lens group; wherein the zoom lens system satisfies the following condition: −7.0

摘要翻译： 一种变焦透镜系统，其从物体侧依次包括正的第一透镜组和负的第二透镜组; 其中通过移动所述第一透镜组和所述第二透镜组并且通过改变所述第一透镜组和所述第二透镜组之间的距离来执行变焦; 其中，所述变焦透镜系统满足以下条件：其中：fT表示在长焦距末端处的整个透镜系统的焦距，f2G表示第二透镜组的焦距。

公开(公告)号：US5912771A

公开(公告)日：1999-06-15

申请号：US935894

申请日：1997-09-23

申请人： Hiroyasu Ozaki ,  Takayuki Ito

发明人： Hiroyasu Ozaki ,  Takayuki Ito

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

CPC分类号： G02B15/173

摘要： A zoom lens system includes a positive first lens group, a negative second lens group, and a positive third lens group. The second and third lens groups move to perform a zooming operation. The zoom lens system satisfies the relationships 0

摘要翻译： 变焦透镜系统包括正的第一透镜组，负的第二透镜组和正的第三透镜组。 第二和第三透镜组移动以执行缩放操作。 变焦透镜系统满足关系0

公开(公告)号：US5845053A

公开(公告)日：1998-12-01

申请号：US548146

申请日：1995-10-25

申请人： Atsushi Watanabe ,  Takayuki Ito ,  Tatsuo Karakama

发明人： Atsushi Watanabe ,  Takayuki Ito ,  Tatsuo Karakama

IPC分类号： B23K9/12 ,  B23K9/127 ,  B25J9/22 ,  G05B19/42 ,  G06F15/18

CPC分类号： B23K9/12 ,  B23K9/16 ,  B23K9/32 ,  G05B19/427 ,  G05B2219/45104 ,  Y02P90/265

摘要： First, an operator sequentially teaches the start point A, the end point F and junction points B, C, D, E on the welding path by moving the torch head by jog feed without paying attention to the torch orientation. Next, a reference plane to define the orientation of the torch is specified, and an inclination angle and a forward angle representing the torch orientation be inputted into a robot controller. On the basis of these inputted angle data and the taught data, a basic welding orientation is automatically calculated. Further auxiliary points are set around the junction points B through E each forming corner parts connecting straight lines; tool vectors which may give a smooth torch orientation change through the corner parts are automatically calculated for the auxiliary points and the junction points; and on the basis of the results, a welding program is produced. Among elements which determine the torch orientation, an element relating to the rotation around the torch axis reflects the state at the time of teaching of points A to E.

摘要翻译： 首先，操作者通过点动进给来移动割炬头，而不注意割炬方向，顺序地教导焊接路径上的起点A，终点F和结点B，C，D，E。 接下来，指定用于限定割炬定向的参考平面，并且将表示割炬方位的倾斜角度和向前角度输入到机器人控制器中。 基于这些输入的角度数据和教导的数据，自动计算基本的焊接取向。 另外辅助点设置在连接点B至E周围，每个连接点形成连接直线的拐角部分; 自动计算辅助点和连接点的刀具向量，可以给出通过拐角部分平滑的手电筒取向变化; 并根据结果，生产焊接程序。 在确定割炬方向的元件中，与割炬轴线周围的旋转有关的元件反映了点A到E的教学时的状态。

公开(公告)号：US5764872A

公开(公告)日：1998-06-09

申请号：US495766

申请日：1995-06-27

申请人： Koji Koyamada ,  Takayuki Ito

发明人： Koji Koyamada ,  Takayuki Ito

IPC分类号： G06F17/50 ,  G06T7/00 ,  G06T11/20 ,  G06T17/20 ,  G06T17/00

CPC分类号： G06T17/20

摘要： A method and apparatus for displaying stream lines in a space are disclosed. First, the space is divided into a plurality of tetrahedral cells. Position data of each vertex of the tetrahedral cells and vector data at each position are collected. A critical point for each tetrahedral cell is then computed. The critical point is within the tetrahedral cell and for which the vector data becomes zero. Using the collected position and vector data, a Jacobian matrix J is calculated when such a critical point is found, and eigenvalues of the Jacobian matrix J are also calculated. Next, the starting point of a stream line within a tetrahedral cell is calculated for each of the eigenvalues by moving a microscopic distance from the critical point. Finally, a stream line is calculated from the starting point, and the stream line is displayed.

摘要翻译： 公开了一种用于在空间中显示流线的方法和装置。 首先，空间被分成多个四面体单元。 收集每个位置的四面体单元和矢量数据的每个顶点的位置数据。 然后计算每个四面体单元的临界点。 临界点在四面体单元内，向量数据变为零。 使用收集的位置和向量数据，当发现这样的临界点时计算雅可比矩阵J，并且还计算雅可比矩阵J的特征值。 接下来，通过从临界点移动微观距离，为每个特征值计算四面体单元内的流线的起始点。 最后，从起始点计算流线，并显示流线。

公开(公告)号：US5734510A

公开(公告)日：1998-03-31

申请号：US755914

申请日：1996-11-25

申请人： Takayuki Ito

发明人： Takayuki Ito

IPC分类号： G02B15/20 ,  G02B15/16 ,  G02B15/14

CPC分类号： G02B15/161

摘要： A zoom lens includes a front lens group and a rear lens group, which satisfies the relationship defined by the formula 1.07

摘要翻译： 变焦透镜包括前透镜组和后透镜组，其满足由公式1.07

公开(公告)号：US5706138A

公开(公告)日：1998-01-06

申请号：US702044

申请日：1996-08-23

申请人： Tetsuya Abe ,  Takayuki Ito ,  Takashi Enomoto

发明人： Tetsuya Abe ,  Takayuki Ito ,  Takashi Enomoto

IPC分类号： G02B15/167 ,  G02B15/17 ,  G02B15/14

CPC分类号： G02B15/17

摘要： A zoom lens system having a high zoom ratio and a high aperture ratio includes a first lens group having a positive power, a second lens group having a negative power, a third lens group having a negative power, and a fourth lens group having a positive power. The second lens group has a magnification varying function and is moved during a zooming operation. The third lens group has a focus compensating function and is moved during the zooming operation. The fourth lens group has an image forming function and is not moved during the zooming operation.

摘要翻译： 具有高变焦比和高开口率的变焦透镜系统包括具有正光焦度的第一透镜组，具有负光焦度的第二透镜组，具有负光焦度的第三透镜组和具有负光焦度的第四透镜组 功率。 第二透镜组具有倍率变化功能，并且在变焦操作期间移动。 第三透镜组具有聚焦补偿功能，并且在变焦操作期间移动。 第四透镜组具有图像形成功能，并且在变焦操作期间不移动。

公开(公告)号：US5687028A

公开(公告)日：1997-11-11

申请号：US681505

申请日：1996-07-23

申请人： Takayuki Ito

发明人： Takayuki Ito

IPC分类号： G02B15/16 ,  G02B15/14 ,  G02B13/18

CPC分类号： G02B15/161

摘要： A zoom lens system includes a positive first lens group and a negative second lens group in this order from an object side. A distance between the first and second lens groups is varied during a zooming operation. The first lens group consists of a negative first sub-group and a positive second sub-group, in this order from an object side. The negative first sub-group consisting of a negative first lens element, having a concave surface facing toward the object side, and a negative second lens element, having a concave surface that faces toward an image side, in this order from the object side. The negative first sub-group being provided with at least one aspherical surface. The zoom lens system satisfies the following relationships: SF1

摘要翻译： 变焦透镜系统从物体侧依次包括正的第一透镜组和负的第二透镜组。 在变焦操作期间，第一和第二透镜组之间的距离是变化的。 第一透镜组由负面的第一子组和正的第二子组组成，从物体侧开始。 从物体侧开始，依次具有朝向物体侧的具有凹面的负第一透镜元件和具有朝向像侧的凹面的负第二透镜元件的负第一子组。 负的第一子组设置有至少一个非球面。 变焦透镜系统满足以下关系：SF1 <-34

公开(公告)号：US5677798A

公开(公告)日：1997-10-14

申请号：US330663

申请日：1994-10-28

申请人： Hiroyuki Hirano ,  Takayuki Ito ,  Takashi Iizuka

发明人： Hiroyuki Hirano ,  Takayuki Ito ,  Takashi Iizuka

IPC分类号： G02B9/04 ,  G02B13/18 ,  G02B9/08

CPC分类号： G02B9/04 ,  G02B13/18

摘要： An image forming lens system including a positive front lens group, a diaphragm, and a rear lens group, in this order from an object to be imaged. The front lens group is made of optical glass. The rear lens group is made of a single meniscus plastic lens having opposed aspherical lens surfaces with a concave surface adjacent to the diaphragm. The lens system satisfies the following relationships: f.sub.0 .multidot..vertline.1/f.sub.R-1 +1/f.sub.R-2 .vertline.

摘要翻译： 从成像对象的顺序构成包括正面透镜组，光圈和后透镜组的成像透镜系统。 前镜组由光学玻璃制成。 后透镜组由具有相邻的非球面透镜表面的单个弯液面塑料透镜制成，具有与隔膜相邻的凹表面。 透镜系统满足以下关系：f0x | 1 / fR-1 + 1 / fR-2 | <0.3-4

公开(公告)号：US5663838A

公开(公告)日：1997-09-02

申请号：US523935

申请日：1995-09-06

申请人： Sachio Hasushita ,  Takayuki Ito

发明人： Sachio Hasushita ,  Takayuki Ito

IPC分类号： G02B13/18 ,  G02B15/16 ,  G02B15/14

CPC分类号： G02B15/161

摘要： A zoom lens system which includes a positive first lens group and a negative second lens group, arranged in this order from an object side so that a distance between the first and second lens groups is changed to alter the focal length. The first lens group includes a first negative sub-lens group, and a first positive sub-lens group. The first negative sub-lens group includes a first negative lens made of glass, and a second negative lens made of plastic. The first positive sub-lens group includes a positive third lens made of glass. The negative second lens group includes a positive fourth lens made of plastic, and a negative fifth lens made of glass lens, in this order from the object side. The zoom lens system satisfies the following relationships:SF1=(r.sub.1-1 +r.sub.1-2)/(r.sub.1-1 -r.sub.1-2).ltoreq.0;andSF2=(r.sub.2-1 +r.sub.2-2)/(r.sub.2-1 -r.sub.2-2)>0where SF1 designates the shaping factor of the first negative lens, SF2 the shaping factor of the second negative lens, and r.sub.1-j the radius of curvature of the j-th surface of the i-th lens, respectively.

摘要翻译： 一种变焦透镜系统，包括从物体侧依次排列的正的第一透镜组和负的第二透镜组，使得第一和第二透镜组之间的距离被改变以改变焦距。 第一透镜组包括第一负子透镜组和第一正子透镜组。 第一负子透镜组包括由玻璃制成的第一负透镜和由塑料制成的第二负透镜。 第一正子透镜组包括由玻璃制成的正第三透镜。 负的第二透镜组从物体侧依次包括由塑料制成的正的第四透镜和由玻璃透镜制成的负的第五透镜。 变焦透镜系统满足以下关系：SF1 =（r1-1 + r1-2）/（r1-1-r1-2） 0其中，SF1表示第一负透镜的整形系数，SF2表示第二负透镜的整形系数，r1-j表示第i透镜的第j表面的曲率半径， 分别。

公开(公告)号：US5602682A

公开(公告)日：1997-02-11

申请号：US280549

申请日：1994-07-26

申请人： Takayuki Ito ,  Takayasu Shishido ,  Hideto Machii

发明人： Takayuki Ito ,  Takayasu Shishido ,  Hideto Machii

IPC分类号： G02B15/02 ,  G02B3/00

CPC分类号： G02B15/02

摘要： An aberration correcting plate for a compatible interchangeable lens which can be detachably attached to a first camera body having a large resultant thickness of filters provided in front of an image pickup device and to a second camera body having a small resultant thickness of filters provided in front of an image pickup device is mounted to a rear end of the compatible interchangeable lens when the rear end is mounted to the second camera body. The aberration correcting plate is made of a parallel-plate whose refractive index N is greater than 1.7 or a lens of negative power. The sum of the thicknesses of the aberration correcting plate and the filters provided in front of the image pickup device of the second camera body is substantially identical to or smaller than the total thickness of the filters provided in front of the image pickup device of the first camera body.

摘要翻译： 一种用于兼容的可互换镜头的像差校正板，其可拆卸地附接到具有设置在图像拾取装置前面的滤光器的大的合成厚度的第一相机主体，以及设置在前面的滤光器的具有较小的滤光片厚度的第二相机主体 当后端安装到第二照相机主体时，图像拾取装置安装到兼容可互换镜头的后端。 像差校正板由折射率N大于1.7的平行板或负功率的透镜构成。 设置在第二照相机机身的图像拾取装置前方的像差校正板和滤光器的厚度的总和大致等于或小于设置在第一照相机的图像拾取装置前面的滤光器的总厚度 相机机身。