公开(公告)号：US20060291071A1

公开(公告)日：2006-12-28

申请号：US11455147

申请日：2006-06-19

申请人： Motoyuki Ohtake

发明人： Motoyuki Ohtake

IPC分类号： G02B15/14

CPC分类号： G02B15/173 ,  G02B27/646

摘要： A zoom lens is disclosed which is superior in reduction of the lens diameter and can suppress degradation in performance while a high zoom ratio is achieved. The zoom lens is formed as a zoom lens of a four-group configuration having positive, negative, positive and positive groups. The second and fourth lens groups move whereas the first and third lens groups are fixed. An aperture stop is disposed on the object side of the third lens group. The third lens group includes negative and positive sub groups with an air distance left therebetween. The positive sub group is shiftable perpendicularly to the optical axis to shift an image substantially perpendicularly. A conditional expression 1.4

摘要翻译： 公开了一种变焦透镜，其在减小透镜直径方面优越，并且可以在实现高变焦比的同时抑制性能劣化。 变焦透镜形成为具有正，负，正和正组的四组配置的变焦透镜。 第二和第四透镜组移动，而第一和第三透镜组是固定的。 孔径光阑设置在第三透镜组的物体侧。 第三透镜组包括其间具有空气距离的负和正的子组。 正子组可以垂直于光轴移动，以基本上垂直地移动图像。 满足条件表达式1.4 <| f3n | / f3 <3，其中f3n是负子组的焦距，f3是第三透镜组的焦距。

公开(公告)号：US06333822B1

公开(公告)日：2001-12-25

申请号：US09634855

申请日：2000-08-08

申请人： Motoyuki Ohtake

发明人： Motoyuki Ohtake

IPC分类号： G02B1514

CPC分类号： G02B15/167

摘要： A variable focal length lens system includes at least three lens groups, in order from an object side, a first lens group G1, a second lens group G2, and a third lens group G3. When the lens group positions are changed from a wide-angle end state to a telephoto end state, each lens group moves from a state focused at infinity to a state focused at near object, in order from a state focused at infinity in the wide-angle end state to a state focused at near object in the telephoto end state. G2 has an aperture diaphragm S, and lens elements are arranged to both object and image side of the aperture diaphragm S. When the lens group positions are changed from the wide-angle end state to the telephoto end state, G1 and G2 moves such that a moving ratio of G2 to G1 is always same, and G3 moves such that a space between G2 and G3 increases when a focusing state in a predetermined focal length changes from infinity to near object, and the space decrease when a focusing state and a focal length state change from near object in the predetermined focal length state to infinity in the next focal length state.

摘要翻译： 可变焦距透镜系统从物体侧起依次包括至少三个透镜组，第一透镜组G1，第二透镜组G2和第三透镜组G3。 当透镜组位置从广角端状态改变到远摄端状态时，每个透镜组从在无穷远处聚焦的状态从处于无限远处的状态开始， 角度结束状态转换为在远摄端状态下聚焦在近物体处的状态。 G2具有孔径光阑S，并且透镜元件布置在孔径光阑S的物体和像侧两侧。当透镜组位置从广角端状态变为远摄端状态时，G1和G2移动使得 G2到G1的移动比率总是相同的，并且G3移动，使得当预定焦距的聚焦状态从无穷远变为近物体时，G2和G3之间的空间增加，并且当聚焦状态和焦点 长度状态从预定焦距状态下的近物体在下一焦距状态向无穷大改变。

公开(公告)号：US5973814A

公开(公告)日：1999-10-26

申请号：US4828

申请日：1998-01-09

申请人： Motoyuki Ohtake ,  Satoru Yoshizawa

发明人： Motoyuki Ohtake ,  Satoru Yoshizawa

IPC分类号： G02B7/28 ,  G02B15/16 ,  G02B15/173 ,  G02B26/10 ,  G03G15/041 ,  H04N1/04 ,  H04N1/393 ,  G02B26/08

CPC分类号： G02B26/10 ,  G02B15/173 ,  G03G15/041 ,  H04N1/393

摘要： An optical document scanning method and apparatus having a driving system which drives each of the lens groups collectively forming the optical scanning apparatus in an optical axis direction to lens positions corresponding to a given designed-scanning magnification; and a detecting system which detects the actual scanning magnification of the optical scanning system at the lens positions corresponding to the given designed-scanning magnification, whereby to substantially match the actual scanning magnification to the given designed-scanning magnification, the driving system drives each of the lens groups in the optical axis direction by a given amount corresponding to any difference between the actual scanning magnification and the given designed-scanning magnification.

摘要翻译： 一种光学文件扫描方法和装置，具有驱动系统，其将沿光轴方向共同形成光学扫描装置的每个透镜组驱动到对应于给定设计扫描倍率的透镜位置; 以及检测系统，其检测在与给定的设计扫描倍率对应的透镜位置处的光学扫描系统的实际扫描倍率，从而基本上将实际的扫描倍率与给定的设计扫描倍率相匹配，驱动系统驱动 透镜在光轴方向上以对应于实际扫描倍率与给定的设计扫描倍率之间的任何差异的给定量组合。

公开(公告)号：US5880892A

公开(公告)日：1999-03-09

申请号：US904841

申请日：1997-08-01

申请人： Motoyuki Ohtake

发明人： Motoyuki Ohtake

IPC分类号： G02B15/173 ,  G02B15/14

CPC分类号： G02B15/173

摘要： A variable magnification optical system of reduced size and increased zoom ratio is provided. According to one aspect, a positive lens group having positive refractive power which is disposed closest to an object and an end lens group disposed closest to an image are provided. When lens group positions are changed so that the system changes from the wide-angle state to the telephoto state, the positive lens group and the end lens group move toward the object. In this case, a ratio of the moving amount of the positive lens group to that of the end lens group from the wide-angle state to a given state satisfies a particular condition. A simplified barrel structure results when a particular first supporting element for supporting a first lens group which moves along an optical axis and a particular second supporting element for supporting an end lens group located closer to an image than the first lens group are provided. The second supporting element moves integrally with the end lens group along the optical axis. The second supporting element transmits a rotational driving force applied thereto to the first supporting element and moves along the optical axis in accordance with the rotational driving force. The first supporting element moves along the optical axis in accordance with the rotational driving force transmitted thereto via the second supporting element.

摘要翻译： 提供了一种缩小尺寸和增大倍率的可变放大倍数光学系统。 根据一个方面，提供一种具有最靠近物体设置的具有正屈光力的正透镜组和最靠近图像设置的端透镜组。 当透镜组位置改变使得系统从广角状态变为远摄状态时，正透镜组和端透镜组朝向对象移动。 在这种情况下，从广角状态到给定状态的正透镜组的移动量与端部透镜组的移动量的比率满足特定条件。 提供了一种简化的桶形结构，当用于支撑沿着光轴移动的第一透镜组的特定第一支撑元件和用于支撑比第一透镜组更靠近图像的端部透镜组的特定第二支撑元件时。 第二支撑元件沿着光轴与端部透镜组一体移动。 第二支撑元件将施加到其上的旋转驱动力传递到第一支撑元件，并且根据旋转驱动力沿光轴移动。 第一支撑元件根据经由第二支撑元件传递到其上的旋转驱动力沿着光轴移动。

公开(公告)号：US5867325A

公开(公告)日：1999-02-02

申请号：US577467

申请日：1995-12-22

申请人： Motoyuki Ohtake ,  Akihiko Obama

发明人： Motoyuki Ohtake ,  Akihiko Obama

IPC分类号： G02B15/177 ,  G02B15/14 ,  G02B3/02

CPC分类号： G02B15/177

摘要： A small wide-angle zoom lens having good performance, in order from the object side, comprises at least a first lens group G1 having a negative refractive power, a second lens group G2 having a positive refractive power, and a third lens group G3 having a negative refractive power. During zooming from a maximum wide-angle state to a maximum telephoto state, each lens group can move toward the object side so that the distance between the first lens group G1 and the second lens group G2 decreases and the distance between the second lens group G2 and the third lens group G3 decreases. The second lens group can comprise first, second and optional third lens group units. The zoom lens is configured to satisfy various conditions to achieve advantageous results.

摘要翻译： 具有从物体侧起依次具有良好性能的小型广角变焦透镜至少包括具有负屈光力的第一透镜组G1，具有正折光力的第二透镜组G2和具有正屈光力的第三透镜组G3， 负屈光力。 在从最大广角状态到最大望远状态的变焦期间，每个透镜组可以朝向物体侧移动，使得第一透镜组G1和第二透镜组G2之间的距离减小，并且第二透镜组G2 第三透镜组G3减小。 第二透镜组可以包括第一，第二和可选的第三透镜组单元。 变焦镜头被配置为满足各种条件以获得有利的结果。

公开(公告)号：US5828499A

公开(公告)日：1998-10-27

申请号：US960097

申请日：1997-10-27

申请人： Motoyuki Ohtake

发明人： Motoyuki Ohtake

IPC分类号： G02B15/20 ,  G02B15/173 ,  G02B15/14 ,  G02B27/64

CPC分类号： G02B15/173

摘要： A high variable power zoom lens system that performs image formation and also covers a wide-angle area. The zoom lens includes a first lens group having a positive refractive power arranged at the object side, a second lens group having a negative refractive power adjacent to the image side of the first lens group and a third lens group having a positive refractive power adjacent to the image side of the second lens group. The second lens group includes, in order from the object side, a double concave lens component, a positive lens having a convex surface facing the object side and a negative lens with the concave surface facing the object side. The zoom lens system preferably satisfies the following Conditions: 0.8

摘要翻译： 执行图像形成并且还覆盖广角区域的高可变功率变焦透镜系统。 变焦透镜包括具有布置在物体侧的正折光力的第一透镜组，具有与第一透镜组的像侧相邻的负折光力的第二透镜组和具有与第一透镜组相邻的正折光力的第三透镜组 第二透镜组的像侧。 第二透镜组从物体侧依次包括双凹透镜部件，具有面向物侧的凸面的正透镜和具有面向物侧的凹面的负透镜。 变焦透镜系统优选满足以下条件：0.8

公开(公告)号：US5765056A

公开(公告)日：1998-06-09

申请号：US733600

申请日：1996-10-18

申请人： Motoyuki Ohtake ,  Koichi Ohshita

发明人： Motoyuki Ohtake ,  Koichi Ohshita

IPC分类号： G03B13/36 ,  G02B7/02 ,  G02B7/08 ,  G02B7/28 ,  G02B27/64 ,  G03B5/00 ,  G03B13/02 ,  G03B13/14

CPC分类号： G03B13/14 ,  G02B27/64

摘要： A camera having an apparatus for correcting parallax includes viewfinder optical system for viewing an object. A shooting lens system for photographing the object is disposed such that the optical axis of the shooting lens system is different from the optical axis of the viewfinder optical system. The shooting lens system includes a correcting lens group such that image shift is accomplished by decentering the correcting lens group. A focusing lens group, spaced from the correcting lens group, is moveable along the optical axis of the shooting lens system. Parallax that is created by changes in the position of the object is corrected by accomplishing an image shift by the shooting lens system.

摘要翻译： 具有用于校正视差的装置的相机包括用于观看物体的取景器光学系统。 拍摄物体的拍摄镜头系统被设置为使得拍摄镜头系统的光轴与取景器光学系统的光轴不同。 拍摄镜头系统包括校正透镜组，使得通过使校正透镜组偏心来实现图像偏移。 与校正透镜组间隔开的聚焦透镜组可以沿着拍摄透镜系统的光轴移动。 通过拍摄镜头系统的图像偏移来校正由对象的位置的变化产生的视差。

公开(公告)号：US5760968A

公开(公告)日：1998-06-02

申请号：US606937

申请日：1996-02-26

申请人： Motoyuki Ohtake ,  Kenzaburo Suzuki

发明人： Motoyuki Ohtake ,  Kenzaburo Suzuki

IPC分类号： G02B15/17 ,  G02B15/14

CPC分类号： G02B15/17

摘要： To provide a zoom lens in which focussing is possible with a small displacement and which is capable of close range focussing with superior imaging performance. The present invention provides a zoom lens capable of focussing at close range, of the type equipped with at least two lens units having negative refractive powers and arranged so as to be adjacent to each other, wherein focussing on close range objects is accomplished by causing one of the at least two lens units to move along the optical axis; and, the conditions: (.beta.a-.beta.a.sup.-1).sup.-2 0 are satisfied, where .beta.a is the lateral magnification of the close range focussing lens unit at the maximum telephoto state in an infinite focus state, and .beta.b is the lateral magnification of the close range focussing lens unit at the maximum wide-angle state in an infinite focus state.

摘要翻译： 为了提供一种变焦透镜，其中可以以小位移进行聚焦，并且能够以优异的成像性能聚焦。 本发明提供一种能够在近距离聚焦的变焦透镜，该变焦透镜配备有具有负屈光力的至少两个透镜单元并且被布置为彼此相邻，其中聚焦在近距离物体上是通过使一个 所述至少两个透镜单元沿着所述光轴移动; 并且，条件（βa-βa-1）-2 <0.8 beta a /βb> 0满足，其中βa是近距离聚焦透镜单元在无限焦中的最大远摄状态下的横向放大率 状态，βb是近距离聚焦透镜单元在无限焦点状态下处于最大广角状态的横向放大率。

公开(公告)号：US5717526A

公开(公告)日：1998-02-10

申请号：US650815

申请日：1996-05-20

申请人： Motoyuki Ohtake

发明人： Motoyuki Ohtake

IPC分类号： G02B13/18 ,  G02B15/16 ,  G02B15/17 ,  G02B15/14

CPC分类号： G02B15/17

摘要： An optical system includes, in the following order from the object side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a negative refractive power, a fourth lens unit having a positive refractive power, a fifth lens unit having a positive refractive power, and a sixth lens unit having a negative refractive power. At least the first and sixth lens units move toward the object side upon changing the focal length from the maximum wide-angle state to the maximum telephoto state in such a way that the gap between the first and second lens units increases, the gap between the third and fourth lens units decreases, and the gap between the fifth and sixth lens units decreases.

摘要翻译： 光学系统按照从物体侧起的顺序包括具有正折光力的第一透镜单元，具有负屈光力的第二透镜单元，具有负屈光力的第三透镜单元，具有负屈光力的第三透镜单元， 正屈光力，具有正屈光力的第五透镜单元和具有负屈光力的第六透镜单元。 至少第一和第六透镜单元在将焦距从最大广角状态改变到最大远摄状态时朝向物体侧移动，使得第一和第二透镜单元之间的间隙增大， 第三和第四透镜单元减小，并且第五和第六透镜单元之间的间隙减小。

公开(公告)号：US5684639A

公开(公告)日：1997-11-04

申请号：US580844

申请日：1995-12-29

申请人： Motoyuki Ohtake

发明人： Motoyuki Ohtake

IPC分类号： G02B15/20 ,  G02B15/173 ,  G02B15/177 ,  G02B15/22 ,  G02B15/14

CPC分类号： G02B15/177 ,  G02B15/173

摘要： A small zoom lens makes possible short distance focusing with a high zoom ratio and high performance using a simple lens barrel. A focusing second lens unit moves along the optical axis during focusing to the short distance object; a first lens unit is adjacent to and on the object side of the focusing lens unit; and a third lens unit is adjacent to and on the image side of the focusing lens unit. The second unit lens and the third lens unit move integrally together during zooming between a maximum wide-angle state and a maximum telephoto state. The focusing lens unit moves in conjunction with and relative to the second and third lens units. The first or the third lens unit has a positive focal length and the other has a negative focal length. Additionally, the first and third lens units satisfies the following condition: -0.6

摘要翻译： 小型变焦镜头可以实现短距离对焦，具有高变焦比和高性能，使用简单的镜筒。 聚焦第二透镜单元在聚焦到短距离物体期间沿着光轴移动; 第一透镜单元邻近于聚焦透镜单元的物体侧; 并且第三透镜单元邻近聚焦透镜单元的图像侧。 第二单位透镜和第三透镜单元在最大广角状态和最大望远状态之间的变焦期间一体地移动。 聚焦透镜单元与第二和第三透镜单元结合并相对于第二和第三透镜单元移动。 第一或第三透镜单元具有正焦距，另一个具有负焦距。 另外，第一和第三透镜单元满足以下条件：-0.6 <（fa + fb）/（fa-fb）<0.4其中fa =第一透镜单元的焦距，fb =第三透镜单元的焦距 。