公开(公告)号：US07738185B2

公开(公告)日：2010-06-15

申请号：US10594328

申请日：2006-02-17

申请人： Motoyuki Ohtake ,  Koji Okajima ,  Mitsuhiro Suzaki

发明人： Motoyuki Ohtake ,  Koji Okajima ,  Mitsuhiro Suzaki

IPC分类号： G02B14/15

CPC分类号： G02B15/173

摘要： A zoom lens and imaging apparatus implementing four lens groups including a first lens group G1 having a positive refractive power, a second lens group G2 having a negative refractive power, a third lens group G3 having a positive refractive power, and a fourth lens group G4 having a positive refractive power. When a positional state is varied from a wide-angle-end state to a telephoto-end state, the second lens group is moved to an image side, and the fourth lens group is moved to compensate for image plane variation caused by the movement of the second lens group.

摘要翻译： 一种变焦透镜和成像装置，其实现包括具有正折光力的第一透镜组G1，具有负屈光力的第二透镜组G2，具有正折光力的第三透镜组G3和第四透镜组G4的四个透镜组 具有正的屈光力。 当位置状态从广角端状态变化到长焦端状态时，第二透镜组移动到像侧，第四透镜组被移动以补偿由于移动造成的像平面变化 第二个镜头组。

公开(公告)号：US20110085248A1

公开(公告)日：2011-04-14

申请号：US12923549

申请日：2010-09-28

申请人： Motoyuki Ohtake ,  Masayuki Murata ,  Atsuo Kikuchi

发明人： Motoyuki Ohtake ,  Masayuki Murata ,  Atsuo Kikuchi

IPC分类号： G02B15/14

CPC分类号： G02B15/173 ,  G02B13/18

摘要： Disclosed herein is a variable focal length lens system including a first lens group, a second lens group, a third lens group, a fourth lens group, and a fifth lens group. The first to the fifth lens groups are arranged in order from an object side. The variable focal length lens system satisfies following conditional expressions (1) to (3): 0.95

摘要翻译： 本发明公开了一种包括第一透镜组，第二透镜组，第三透镜​​组，第四透镜组和第五透镜组的可变焦距透镜系统。 第一至第五透镜组从物体侧依次排列。 可变焦距透镜系统满足以下条件表达式（1）至（3）：0.95

公开(公告)号：US07706080B2

公开(公告)日：2010-04-27

申请号：US10589675

申请日：2005-10-04

申请人： Motoyuki Ohtake ,  Shinichi Arita

发明人： Motoyuki Ohtake ,  Shinichi Arita

IPC分类号： G02B15/14

CPC分类号： G02B15/173 ,  G02B27/646

摘要： To provide a zoom lens capable of achieving stable optical quality by inhibiting an effect of assemble errors during manufacturing. A zoom lens includes a positive first lens group G1, a negative second lens group G2, a positive third lens group G3, and a positive fourth lens group G4, which are arranged from an object side in that order, and during variation in lens position from a wide angle end state to a telescopic end state, G1 and G3 are fixed, G2 is moved toward an image side, G4 moves so as to compensate fluctuations in image-surface position due to the shift of G2, and an aperture diaphragm S is fixed adjacent to the object side of G3, etc. G2 includes a negative meniscus lens L21 with a concave surface opposing the image side and a cemented lens L22 of a biconcave lens and a positive lens with a convex surface opposing the object side, which are arranged from the object side in that order, and the negative meniscus lens is a compound lens of a glass lens and a resin lens PL formed adjacent to the image side of the glass lens, the lens surface adjacent to the image side of the resin lens is aspheric, and the conditional equation (1) below is satisfied: n2>1.75,   (1) where n2 is the average refractive index of glass constituting G2.

摘要翻译： 提供能够通过抑制制造过程中组装误差的影响而能够实现稳定的光学质量的变焦透镜。 变焦透镜包括从物体侧依次布置的正的第一透镜组G1，负的第二透镜组G2，正的第三透镜组G3和正的第四透镜组G4，以及在透镜位置的变化 从广角端状态到伸缩端状态，G1和G3是固定的，G2朝向图像侧移动，G4移动以补偿由于G2的偏移引起的图像表面位置的波动，以及孔径光阑S 被固定在G3的物体侧附近，G2包括具有与图像侧相对的凹面的负弯月形透镜L21和双凸透镜的胶合透镜L22和具有与物侧相对的凸面的正透镜， 从物体侧依次排列，负弯月形透镜是与玻璃透镜的像侧相邻形成的玻璃透镜和树脂透镜PL的复合透镜，与树脂的像侧相邻的透镜面 镜头是非球面的，而t 满足以下条件式（1）：n2> 1.75，（1）其中n2是构成G2的玻璃的平均折射率。

公开(公告)号：US20090109545A1

公开(公告)日：2009-04-30

申请号：US10589675

申请日：2005-10-04

申请人： Motoyuki Ohtake ,  Shinichi Arita

发明人： Motoyuki Ohtake ,  Shinichi Arita

IPC分类号： G02B15/16

CPC分类号： G02B15/173 ,  G02B27/646

摘要： To provide a zoom lens capable of achieving stable optical quality by inhibiting an effect of assemble errors during manufacturing. A zoom lens includes a positive first lens group G1, a negative second lens group G2, a positive third lens group G3, and a positive fourth lens group G4, which are arranged from an object side in that order, and during variation in lens position from a wide angle end state to a telescopic end state, G1 and G3 are fixed, G2 is moved toward an image side, G4 moves so as to compensate fluctuations in image-surface position due to the shift of G2, and an aperture diaphragm S is fixed adjacent to the object side of G3, etc. G2 includes a negative meniscus lens L21 with a concave surface opposing the image side and a cemented lens L22 of a biconcave lens and a positive lens with a convex surface opposing the object side, which are arranged from the object side in that order, and the negative meniscus lens is a compound lens of a glass lens and a resin lens PL formed adjacent to the image side of the glass lens, the lens surface adjacent to the image side of the resin lens is aspheric, and the conditional equation (1) below is satisfied: n2>1.75,   (1) where n2 is the average refractive index of glass constituting G2.

摘要翻译： 提供能够通过抑制制造过程中组装误差的影响而能够实现稳定的光学质量的变焦透镜。 变焦透镜包括从物体侧依次布置的正的第一透镜组G1，负的第二透镜组G2，正的第三透镜组G3和正的第四透镜组G4，以及在透镜位置的变化 从广角端状态到伸缩端状态，G1和G3是固定的，G2朝向图像侧移动，G4移动以补偿由于G2的偏移引起的图像表面位置的波动，以及孔径光阑S 被固定在G3的物体侧附近，G2包括具有与图像侧相对的凹面的负弯月形透镜L21和双凸透镜的胶合透镜L22和具有与物侧相对的凸面的正透镜， 从物体侧依次排列，负弯月形透镜是与玻璃透镜的像侧相邻形成的玻璃透镜和树脂透镜PL的复合透镜，与树脂的像侧相邻的透镜面 镜头是非球面的，而t 满足下列条件式（1）：<？in-line-formula description =“In-line formula”end =“lead”？> n2> 1.75，（1）<？in-line-formula description =“In 线公式“end =”tail“？>其中n2是构成G2的玻璃的平均折射率。

公开(公告)号：US20090046374A1

公开(公告)日：2009-02-19

申请号：US12216950

申请日：2008-07-14

申请人： Motoyuki Ohtake

发明人： Motoyuki Ohtake

IPC分类号： G02B15/20 ,  G02B15/16

CPC分类号： G02B15/173

摘要： A zoom lens and an imaging apparatus are disclosed. The zoom lens includes, in order from an object side to an image-plane side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power, a fourth lens group having a negative refractive power, and a fifth lens group having a positive refractive power. During a change of a lens zoom position from a maximum wide angle state to a maximum telephoto state, at least the second lens group moves toward an image side, the third lens group moves toward an object side, and the fourth lens group is fixed in an optical-axis direction. An aperture stop is disposed near the object side of the third lens group. The first to fifth lens groups satisfy predetermined conditions.

摘要翻译： 公开了一种变焦透镜和成像装置。 变焦透镜从物体侧到像面侧依次包括具有正屈光力的第一透镜组，具有负屈光力的第二透镜组，具有正折光力的第三透镜组，第四透镜组，第四透镜组 具有负屈光力的透镜组和具有正折光力的第五透镜组。 在将镜头变焦位置从最大广角状态改变为最大望远状态期间，至少第二透镜组朝向图像侧移动，第三透镜​​组朝向物体侧移动，并且将第四透镜组固定在 光轴方向。 孔径光阑设置在第三透镜组的物体侧附近。 第一至第五透镜组满足预定条件。

公开(公告)号：US20090009884A1

公开(公告)日：2009-01-08

申请号：US12007853

申请日：2008-01-16

申请人： Motoyuki Ohtake ,  Atsushi Suzuki

发明人： Motoyuki Ohtake ,  Atsushi Suzuki

IPC分类号： G02B15/14

CPC分类号： G02B15/177

摘要： A zoom lens includes first to third lens groups having negative, positive, and positive refractive powers, respectively. When a lens position state changes from a wide-angle to a telephoto, all lens groups are moved in an optical axis direction so that a distance between the first and second lens groups decreases and a distance between the second and third lens groups increases. A close-distance focusing is accomplished by moving the third lens group. The first lens group is composed of negative and positive lens components. The second lens group is composed of a positive lens component, and a cemented lens composed of a positive lens of biconvex shape, and a negative lens of biconcave shape. The third lens group is composed of a positive lens component in which at least one of object-side and image-side lens surfaces is aspheric. The zoom lens is satisfied a predetermined condition.

摘要翻译： 变焦透镜分别包括具有负的，正的和正的折射光焦度的第一至第三透镜组。 当透镜位置状态从广角变化到长焦时，所有透镜组在光轴方向上移动，使得第一和第二透镜组之间的距离减小，并且第二和第三透镜组之间的距离增加。 通过移动第三透镜组实现近距离对焦。 第一透镜组由负透镜组件和正透镜组件组成。 第二透镜组由正透镜部件和由双凸形状的正透镜组成的胶合透镜和双凹面形状的负透镜组成。 第三透镜组由物镜侧和像侧透镜表面中的至少一个是非球面的正透镜部件组成。 变焦镜头满足预定条件。

公开(公告)号：US20070263299A1

公开(公告)日：2007-11-15

申请号：US11783797

申请日：2007-04-12

申请人： Motoyuki Ohtake

发明人： Motoyuki Ohtake

IPC分类号： G02B9/34

CPC分类号： G02B15/173

摘要： A variable focal length lens system includes: a first lens group having a positive refractive power; a second lens group having a negative refractive power; a third lens group having a positive refractive power; and a fourth lens group having a positive refractive power. As the lens position state changes from a wide-angle end state to a telephoto end state, at least each of the lens groups is mobile, the second lens group moves towards the image side and the third lens group moves towards the object side such that the gap between the first and the second lens group increases, and the gap between the second and the third lens group decreases, while the fourth lens group moves in the direction of the optical axis so as to compensate for changes in the position of the image plane which accompany movements of each of the lens group.

摘要翻译： 可变焦距透镜系统包括：具有正屈光力的第一透镜组; 具有负屈光力的第二透镜组; 具有正屈光力的第三透镜组; 以及具有正屈光力的第四透镜组。 当透镜位置状态从广角端状态变化到长焦端状态时，透镜组中的至少每一个都是可移动的，第二透镜组朝向像侧移动，第三透镜​​组向物体侧移动，使得 第一透镜组和第二透镜组之间的间隙增加，并且第二透镜组和第三透镜组之间的间隙减小，而第四透镜组沿光轴方向移动，以补偿图像位置的变化 伴随每个镜头组的运动的飞机。

公开(公告)号：US20050083584A1

公开(公告)日：2005-04-21

申请号：US10785096

申请日：2004-02-25

申请人： Tomoki Ito ,  Motoyuki Ohtake

发明人： Tomoki Ito ,  Motoyuki Ohtake

IPC分类号： G02B15/173 ,  G02B15/14 ,  G02B9/34

CPC分类号： G02B27/646 ,  G02B15/173

摘要： A zoom lens system having high zoom ratio capable of shifting an image for vibration reduction correction. The system includes, in order from an object, a first lens group having positive power, a second lens group having negative power, a third lens group having positive power, and a fourth lens group having positive power. Each of the first lens group through the fourth lens group moves such that when zooming from a wide-angle end state to a telephoto end state, a distance between the first and the second lens groups increases, a distance between the second and the third lens groups decreases, and a distance between the third and the fourth lens group decreases. The third lens group includes at least two sub-lens groups having positive refractive power. Image shifting carried out by moving either of the two sub-lens groups perpendicularly to the optical axis. Given conditions are satisfied.

摘要翻译： 一种具有高变焦比的变焦透镜系统，能够移动用于减振校正的图像。 该系统从物体起依次包括具有正功率的第一透镜组，具有负功率的第二透镜组，具有正光焦度的第三透镜组和具有正光焦度的第四透镜组。 通过第四透镜组的第一透镜组中的每一个移动，使得当从广角端状态变焦到远摄端状态时，第一和第二透镜组之间的距离增加，第二透镜和第三透镜组之间的距离 组减小，并且第三和第四透镜组之间的距离减小。 第三透镜组包括具有正屈光力的至少两个子透镜组。 通过使两个子透镜组中的任一个垂直于光轴移动来进行图像偏移。 给定条件满意。

公开(公告)号：US06271973B1

公开(公告)日：2001-08-07

申请号：US09442409

申请日：1999-11-18

申请人： Motoyuki Ohtake ,  Satoshi Hayakawa

发明人： Motoyuki Ohtake ,  Satoshi Hayakawa

IPC分类号： G02B1514

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 first lens group having a positive refractive power, a second lens group having a positive refractive power disposed to the image side of the first lens group, and a third lens group having a negative refractive power disposed to the image side of the second lens group are provided. When the system goes from a wide-angle end state to a telephoto end state, the first lens group, the second lens group, and the third lens group are moved toward the object in such a manner that a space between the first lens group and the second lens group is increased, and a space between the second lens group and the third lens group is decreased. In this case, a ratio of the focal length of the first lens group to that of the lens system in the telephoto end state satisfies a particular condition.

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，具有正屈光力的第一透镜组，具有设置在第一透镜组的像侧的正折光力的第二透镜组以及设置在像侧的具有负折光力的第三透镜组 提供第二透镜组。 当系统从广角端状态变为望远端状态时，第一透镜组，第二透镜组和第三透镜组朝向物体移动，使得第一透镜组和第三透镜组之间的空间 第二透镜组增加，并且第二透镜组和第三透镜组之间的空间减小。 在这种情况下，在远摄端状态下，第一透镜组的焦距与透镜系统的焦距的比率满足特定条件。

公开(公告)号：US06215599B1

公开(公告)日：2001-04-10

申请号：US09664553

申请日：2000-09-18

申请人： Motoyuki Ohtake

发明人： Motoyuki Ohtake

IPC分类号： G02B1514

CPC分类号： G02B15/17

摘要： A zoom lens having a high zoom ratio (>4×) and a large aperture ratio (FNO 2.8) and capable of providing close-range focus with only a small amount of aberration fluctuations. The zoom lens comprises either five or six lens groups. An exemplary zoom lens comprises, objectwise to imagewise, a first lens group having positive refractive power, a second lens group having negative refractive power and separated from the first lens group by a first air space, a third lens group having negative refractive power and separated from the second lens group by a second air space, a fourth lens group having positive refractive power and separated from the third lens group by a third air space, and a fifth lens group having a positive refractive power and separated from said fourth lens group by a fourth air space. The zoom lens is designed such that when zooming from the maximum wide-angle state to the maximum telephoto state, at least the second lens group moves imagewise and at least one of the first lens group and said fourth lens group moves so as to increase the first and second air spaces and decrease the third and fourth air spaces. The zoom lens also satisfies one or more of a number of preferred design conditions.

摘要翻译： 具有高变焦比（> 4x）和大孔径比（FNO 2.8）的变焦镜头，并能够仅提供少量像差波动的近距离对焦。 变焦镜头包括五个或六个镜头组。 示例性的变焦透镜包括物镜到成像的具有正折光力的第一透镜组，具有负屈光力并由第一空气间隔与第一透镜组分离的第二透镜组，具有负屈光力并分离的第三透镜组 从第二透镜组通过第二空气空间，具有正折射光焦度的第四透镜组并且由第三空间与第三透镜组分离，第五透镜组具有正折射光焦度并且与所述第四透镜组分离， 第四个空域。 变焦透镜被设计成使得当从最大广角状态变焦到最大望远状态时，至少第二透镜组成像移动，并且第一透镜组和第四透镜组中的至少一个移动，以便增大 第一和第二空域，减少第三和第四空域。 变焦透镜还满足多个优选设计条件中的一个或多个。