公开(公告)号：US06577452B2

公开(公告)日：2003-06-10

申请号：US10054892

申请日：2002-01-25

申请人： Motoyuki Ohtake ,  Toshinori Take

发明人： Motoyuki Ohtake ,  Toshinori Take

IPC分类号： G02B1522

CPC分类号： G02B15/173

摘要： A variable focal length lens system comprises, from the object side, a positive first lens group, a positive second lens group and a negative third lens group. The lens groups are moved toward the object side such that, when changing from wide angle to telephoto, distance between the first lens group and the second lens group is increased and distance between the second lens group and the third lens group is decreased. An aperture stop disposed in the vicinity of the second lens group moves together with the second lens group; the third lens group is composed of a positive lens with the convex surface facing the image side and a negative lens disposed away from the positive lens toward the image side and having the concave surface facing the object side; and the positive lens is a double aspherical lens and satisfies predetermined conditions.

摘要翻译： 可变焦距透镜系统从物体侧包括正的第一透镜组，正的第二透镜组和负的第三透镜组。 透镜组朝向物体侧移动，使得当从广角变为长焦时，第一透镜组和第二透镜组之间的距离增加，并且第二透镜组和第三透镜组之间的距离减小。 设置在第二透镜组附近的孔径光阑与第二透镜组一起移动; 第三透镜组由具有朝向像侧的凸面的正透镜和从正透镜朝向像侧设置且具有面向物侧的凹面的负透镜构成; 并且正透镜是双非球面透镜，并且满足预定条件。

公开(公告)号：US06556356B2

公开(公告)日：2003-04-29

申请号：US09962351

申请日：2001-09-26

申请人： Motoyuki Ohtake

发明人： Motoyuki Ohtake

IPC分类号： G02B1514

CPC分类号： G02B15/173

摘要： A zoom lens 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, and a fourth lens group having positive refractive power. When the lens system is changed from a wide-angle end to a telephoto end, each lens group is moved to the object side such that the separation between the first lens group and the second lens group increases, the separation between the second lens group and the third lens group decreases, and the separation between the third lens group and the fourth lens group decreases. The fourth lens group is composed of four lens elements arranged, in order from the object, a first positive lens element, a first negative lens element, a second positive lens element, and a second negative lens element.

摘要翻译： 变焦透镜系统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，具有正折光力的第三透镜组和具有正折光力的第四透镜组。 当透镜系统从广角端变为望远端时，每个透镜组移动到物体侧，使得第一透镜组和第二透镜组之间的间隔增加，第二透镜组与第二透镜组之间的间隔 第三透镜组减小，并且第三透镜组和第四透镜组之间的间隔减小。 第四透镜组由从物体依次排列的四个透镜元件组成，第一正透镜元件，第一负透镜元件，第二正透镜元件和第二负透镜元件。

公开(公告)号：US06249389B1

公开(公告)日：2001-06-19

申请号：US09271595

申请日：1999-03-17

申请人： Motoyuki Ohtake

发明人： Motoyuki Ohtake

IPC分类号： G20B1514

CPC分类号： G02B15/173

摘要： A variable-focus lens system that is small in size and permits attainment of high zooming ratio while maintaining high performance. In order from the object side, there are therein a first, positive lens group; a second, negative lens group; a third, positive lens group; a fourth, positive lens group; and a fifth, negative lens group; all of the lens groups move toward the object side in such fashion as to cause the distance between the first and second lens groups to increase, the distance between the second and third lens groups to decrease, the distance between the third and fourth lens groups to increase, and the distance between the fourth and the fifth lens groups to decrease, when the positional state of the lens changes from the extreme wide-angle state to the extreme telephoto state. At this time, the second lens group and the fourth lens group move in integral fashion during a change in the positional state of the lens, an aperture stop is arranged between the second and third lens groups, and the aforesaid third lens group moves during short-distance focusing. Suitable ranges for the widths of the second through fourth lens groups are defined by means of conditional expressions.

摘要翻译： 可变焦距透镜系统，尺寸小，可以实现高变焦比，同时保持高性能。 从物体方向开始，其中存在第一正透镜组; 第二个负透镜组; 第三，正透镜组; 第四，正透镜组; 和第五个负透镜组; 所有透镜组以这样的方式朝向物体侧移动，使得第一和第二透镜组之间的距离增加，第二和第三透镜组之间的距离减小，第三和第四透镜组之间的距离相对于 当透镜的位置状态从极端广角状态变化到极远摄状态时，第四透镜组和第五透镜组之间的距离减小。 此时，第二透镜组和第四透镜组在透镜的位置状态改变期间以一体的方式移动，在第二透镜组和第三透镜组之间布置孔径光阑，并且上述第三透镜组在短时间内移动 对焦。 通过条件表达式来限定第二至第四透镜组的宽度的适当范围。

公开(公告)号：US5999329A

公开(公告)日：1999-12-07

申请号：US980011

申请日：1997-11-26

申请人： Motoyuki Ohtake

发明人： Motoyuki Ohtake

IPC分类号： G02B15/177 ,  G02B15/14

CPC分类号： G02B15/177

摘要： A variable focal length optical system is constituted by, in succession from an object side, a first lens unit G1 having a negative refractive power, a second lens unit G2 having a positive refractive power, a third lens unit G3 having a negative refractive power, and a fourth lens unit G4 having a positive refractive power. When the focal length of the entire lens system is changed while maintaining a constant image plane position, the second lens unit G2 moves in the optical axis direction, the third lens unit G3 moves in the optical axis direction to compensate for variations in image plane position upon movement of the second lens unit G2, and the first lens unit G1 and the fourth lens unit G4 are fixed in position in the optical axis direction. An aperture stop is disposed at a position on the object side of a position closest to the image side of the third lens unit G3, or each of the first to fourth lens units G1 to G4 is constituted by two or less lens elements.

摘要翻译： 可变焦距光学系统由物体侧依次构成具有负屈光力的第一透镜单元G1，具有正折光力的第二透镜单元G2，具有负折光力的第三透镜单元G3， 以及具有正折光力的第四透镜单元G4。 当整个透镜系统的焦距在保持恒定的图像平面位置的同时改变时，第二透镜单元G2沿光轴方向移动，第三透镜​​单元G3沿光轴方向移动以补偿像平面位置的变化 在第二透镜单元G2移动时，第一透镜单元G1和第四透镜单元G4在光轴方向上固定。 孔径光阑设置在最接近第三透镜单元G3的像侧的位置的物体侧的位置，或者第一至第四透镜单元G1至G4中的每一个由两个或更少的透镜元件构成。

公开(公告)号：US5946145A

公开(公告)日：1999-08-31

申请号：US916239

申请日：1997-08-22

申请人： Motoyuki Ohtake

发明人： Motoyuki Ohtake

IPC分类号： G02B15/17 ,  G02B9/12

CPC分类号： G02B15/17

摘要： A compact variable focal length optical system is suitable for high zoom ratio. At least a first lens group having a positive refractive power, a second lens group, and a third lens group having a negative refractive power are provided. At least the first lens group is moved toward an object side of the system to satisfy a particular conditional equation so that a distance between the first and second lens groups is increased and a distance between the second and third lens groups is changed. In certain constructions, a first lens group having a positive refractive power, a second lens group having a negative refractive power positioned adjacent to and on an object side of the first lens group, and a third lens group positioned adjacent to and on an image side of the first lens group are provided. The first lens group includes at least two sub-lens groups. One of the sub-lens groups is moved in a direction almost orthogonal to the optical axis so as to shift an image in a direction almost orthogonal to the optical axis.

摘要翻译： 紧凑型可变焦距光学系统适用于高变焦比。 提供至少具有正屈光力的第一透镜组，第二透镜组和具有负折光力的第三透镜组。 至少第一透镜组朝向系统的物体侧移动以满足特定的条件方程，使得第一和第二透镜组之间的距离增加，并且第二和第三透镜组之间的距离改变。 在某些结构中，具有正屈光力的第一透镜组，具有邻近第一透镜组的物体侧并且位于第一透镜组的物体侧的具有负折光力的第二透镜组以及与像侧邻近定位的第三透镜组 提供第一透镜组。 第一透镜组包括至少两个子透镜组。 子透镜组中的一个在与光轴几乎正交的方向上移动，以使图像沿与光轴几乎正交的方向移动。

公开(公告)号：US5875359A

公开(公告)日：1999-02-23

申请号：US820752

申请日：1997-03-19

申请人： Motoyuki Ohtake ,  Koichi Ohshita

发明人： Motoyuki Ohtake ,  Koichi Ohshita

IPC分类号： G03B13/36 ,  G02B7/08 ,  G02B7/09 ,  G02B7/28 ,  G03B13/12 ,  G03B13/10

CPC分类号： G02B7/28

摘要： In a camera comprising a phototaking lens system and a viewfinder lens system having a different optical axis from that of the phototaking lens system, the camera comprises a drive means, for simultaneously zooming the phototaking lens system and the viewfinder lens system, which simultaneously shifts at least one of the lens groups of the phototaking lens system and at least one of the lens groups of the viewfinder lens system. The drive means simultaneously focuses the phototaking lens system and the viewfinder lens system on an object by simultaneously shifting at least one of the lens groups of the phototaking lens system and at least one of the lens groups of the viewfinder lens system based on the position data of the object.

摘要翻译： 在包括具有与摄像透镜系统的光轴不同的光轴的摄影透镜系统和取景器透镜系统的相机中，照相机包括驱动装置，用于同时变焦拍摄透镜系统和取景器透镜系统，其同时在 摄影透镜系统的透镜组中的至少一个以及取景器透镜系统的至少一个透镜组。 驱动装置通过基于位置数据同时移动摄影透镜系统的透镜组中的至少一个和取景器透镜系统的透镜组中的至少一个，同时将拍摄透镜系统和取景器透镜系统对焦于物体上 的对象。

公开(公告)号：US5831768A

公开(公告)日：1998-11-03

申请号：US540164

申请日：1995-10-06

申请人： Motoyuki Ohtake

发明人： Motoyuki Ohtake

IPC分类号： G02B15/173 ,  G02B27/64

CPC分类号： G02B15/173

摘要： A zoom lens with a high zoom ratio is disclosed which is capable of shifting an image while preventing image deterioration. The zoom lens includes a lens group having, in order from the object, a first sub-lens group, a second sub-lens group, and a third sub-lens group, wherein the lens group moves as an integral unit along the optical axis for zooming from the wide-angle end to the telephoto end. The second sub-lens group has at least one positive lens component and at least one negative lens component and is moveable in a direction substantially perpendicular to the optical axis to shift the image.

摘要翻译： 公开了具有高变焦比的变焦镜头，其能够在防止图像劣化的同时移动图像。 变焦透镜包括从物体起依次具有第一子透镜组，第二子透镜组和第三子透镜组的透镜组，其中透镜组沿着光轴作为整体单元移动 用于从广角端到望远端的放大。 第二子透镜组具有至少一个正透镜部件和至少一个负透镜部件，并且可在基本上垂直于光轴的方向上移动以移动图像。

公开(公告)号：US5781348A

公开(公告)日：1998-07-14

申请号：US692747

申请日：1996-08-06

申请人： Motoyuki Ohtake

发明人： Motoyuki Ohtake

IPC分类号： G02B15/173 ,  G02B15/14 ,  G02B27/64

CPC分类号： G02B15/173

摘要： A compact zoom lens system that moves during zooming from a maximum wide-angle state to a maximum telephoto state also can shift an image to compensate for vibrations (shaking). The zoom lens system comprises first through fifth lens groups. During zooming at least the first lens group and the fifth lens group move toward the object side so that a distance between the first lens group and the second lens group increases; a distance between the second lens group and the third lens group decreases; a distance between the third lens group and the fourth lens group increases; and a distance between the fourth lens group and the fifth lens group decreases. At least one of the lens elements that comprise the fourth lens group is a shift lens group that shifts the image by moving in a direction substantially perpendicular to the optical axis. The zoom lens system also satisfies several conditions.

摘要翻译： 在从最大广角状态到最大望远状态的变焦期间移动的紧凑变焦透镜系统也可以移动图像以补偿振动（振动）。 变焦透镜系统包括第一至第五透镜组。 在变焦期间，至少第一透镜组和第五透镜组朝向物体侧移动，使得第一透镜组和第二透镜组之间的距离增加; 第二透镜组和第三透镜组之间的距离减小; 第三透镜组和第四透镜组之间的距离增加; 并且第四透镜组和第五透镜组之间的距离减小。 包括第四透镜组的透镜元件中的至少一个是通过沿基本上垂直于光轴的方向移动来移动图像的移位透镜组。 变焦镜头系统也满足多种条件。

公开(公告)号：US5764426A

公开(公告)日：1998-06-09

申请号：US715637

申请日：1996-09-18

申请人： Motoyuki Ohtake

发明人： Motoyuki Ohtake

IPC分类号： G02B13/24 ,  G02B15/16 ,  G02B15/177 ,  G02B9/04 ,  G02B13/02

CPC分类号： G02B15/177

摘要： A variable focal length optical system includes, in the following order from an object side, a first lens unit having a negative refractive power and a second lens unit having a positive refractive power, wherein the focal length of an entire lens system changes when a distance between the first lens unit and the second lens unit is changed, and the following condition is satisfied: 0.3

摘要翻译： 可变焦距光学系统按照从物体侧起的顺序包括具有负折光力的第一透镜单元和具有正折光力的第二透镜单元，其中整个透镜系统的焦距在距离 改变第一透镜单元和第二透镜单元之间的距离，并满足以下条件：0.3

公开(公告)号：US5668667A

公开(公告)日：1997-09-16

申请号：US608506

申请日：1996-02-28

申请人： Motoyuki Ohtake

发明人： Motoyuki Ohtake

IPC分类号： G02B15/16 ,  G02B15/163 ,  G02B15/167 ,  G02B15/17 ,  G02B15/173 ,  G02B15/14

CPC分类号： G02B15/163 ,  G02B15/167 ,  G02B15/17 ,  G02B15/173

摘要： Disclosed is a zoom lens comprising at least three movable lens units. The zoom lens comprises a first lens unit disposed closest to an object side and having positive refractive force. The first lens unit includes a positive cemented lens constituted by a positive lens element and a negative lens element, with a concave side of the cemented surface facing the object side. The zoom lens also comprises a last lens unit disposed closest to an image side. Upon zooming from a wide angle end to a telephoto end, at least the first lens unit and the last lens unit move toward the object side so as to increase an air gap between the first lens unit and a lens unit adjacent to the first lens unit on the image side but to decrease an air gap between the last lens unit and a lens unit adjacent to the last lens unit on the object side. The zoom lens satisfies the following condition:0.7

摘要翻译： 公开了一种包括至少三个可移动透镜单元的变焦透镜。 变焦镜头包括最靠近物体侧布置且具有正折射力的第一透镜单元。 第一透镜单元包括由正透镜元件和负透镜元件构成的正胶合透镜，其中胶合表面的凹面面向物侧。 变焦镜头还包括最靠近图像侧设置的最后一个镜头单元。 当从广角端到长焦端变焦时，至少第一透镜单元和最后一个透镜单元朝向物体侧移动，以便增加第一透镜单元和与第一透镜单元相邻的透镜单元之间的气隙 而是减少最后的透镜单元与邻近物体侧的最后一个透镜单元的透镜单元之间的空气间隙。 变焦镜头满足以下条件：0.7