公开(公告)号：US5654829A

公开(公告)日：1997-08-05

申请号：US488914

申请日：1995-06-09

申请人： Motoyuki Ohtake

发明人： Motoyuki Ohtake

IPC分类号： G02B15/20 ,  G02B15/16 ,  G02B15/173 ,  G02B15/14

CPC分类号： G02B15/173 ,  G02B15/16

摘要： In a zoom lens composed of at least a first lens unit G1, a second lens unit G2 and a third lens unit G3 in that order from an object side, a variable magnification-focusing lens unit GF disposed nearer to an image side than the first lens unit is shifted along an optical axis to perform a refractive power varying operation from a wide-angle end to a telephoto end and a focusing operation to a near distance object, and an air gap along the optical axis between the variable magnification-focusing lens unit GF and a lens unit GE adjacent to the variable magnification-focusing lens unit GF is approximately constant at a predetermined photographing distance without depending on variation in effective focal length of the entire lens system.

摘要翻译： 在从物体侧起依次由至少第一透镜单元G1，第二透镜单元G2和第三透镜单元G3构成的变焦透镜中，配置在比第一透镜单元G1更靠近像侧的可变倍率聚焦透镜单元GF 透镜单元沿着光轴移动以执行从广角端到远摄端的折射力变化操作以及对近距离物体的聚焦操作，以及沿着可变倍率聚焦透镜之间的光轴的气隙 单元GF和与可变倍率聚焦透镜单元GF相邻的透镜单元GE在预定的拍摄距离处大致恒定，而不依赖于整个透镜系统的有效焦距的变化。

公开(公告)号：US5390084A

公开(公告)日：1995-02-14

申请号：US247231

申请日：1994-05-23

申请人： Motoyuki Ohtake ,  Koichi Ohshita

发明人： Motoyuki Ohtake ,  Koichi Ohshita

IPC分类号： F21V13/04

CPC分类号： F21V13/04

摘要： An illumination device of this invention includes a flash light source for radiating flash light, a reflector, arranged on a side opposite to an object with respect to the flash light source, for reflecting a light beam radiated from the flash light source, and a refractor for projecting a light beam directly radiated from the flash light source and a light beam reflected by the reflector toward the object. The refractor adopts a Fresnel lens having a rotation-symmetrical shape with respect to its lens optical axis, a surface, on the object side, of the Fresnel lens is a flat surface perpendicular to the lens optical axis, and the other surface of the Fresnel lens is a Fresnel surface. The optical axes of the flash light source and the reflector are coaxial with each other, and define the reference optical axis of the illumination device. The lens optical axis is tilted at a predetermined angle from the reference optical axis, and the lens center of the Fresnel lens is shifted by a predetermined distance from a lens intersection as an intersection between the reference optical axis and the Fresnel lens.

摘要翻译： 本发明的照明装置包括用于辐射闪光的闪光灯源，设置在与闪光光源相对的物体的一侧的反射器，用于反射从闪光光源辐射的光束，以及折射器 用于将从闪光光源直接辐射的光束和由反射器反射的光束投射到物体。 折射器采用相对于其透镜光轴具有旋转对称形状的菲涅尔透镜，菲涅尔透镜的物体侧的表面是与透镜光轴垂直的平坦表面，菲涅耳的另一个表面 镜头是菲涅耳表面。 闪光光源和反射器的光轴彼此同轴，并限定照明装置的基准光轴。 透镜光轴从参考光轴倾斜预定角度，并且菲涅尔透镜的透镜中心作为基准光轴和菲涅尔透镜之间的交点从透镜交点偏移预定距离。

公开(公告)号：US5339123A

公开(公告)日：1994-08-16

申请号：US120019

申请日：1993-09-10

申请人： Isao Soshi ,  Motoyuki Ohtake ,  Hidenori Miyamoto

发明人： Isao Soshi ,  Motoyuki Ohtake ,  Hidenori Miyamoto

IPC分类号： G03B17/24

CPC分类号： G03B17/24 ,  G03B2217/243

摘要： An optical piece for a data imprinting device for a camera having beam incident and beam emerging areas. Beam incident and beam emerging areas have an effective aperture for passing a main beam of light and a peripheral beam refracting surface around and defining the effective aperture. This structure eliminates ghosts or flares generated by light rays passing through the peripheral portion of the optical piece. The peripheral beam refracting surface is equivalent to the surface of a lens having a negative index of refraction or one of the bilateral plane surfaces of a triangular prism with its apex pointing toward the optical axis of the optical piece. The lens geometry is controlled by a set of four inequalities. The effective aperture may use convex, planar or concave shapes.

摘要翻译： 一种用于具有光束入射和光束出射区域的相机的数据记录装置的光学片。 光束入射和射束出射区域具有用于使主光束和周边光束折射表面绕过并限定有效孔径的有效孔径。 该结构消除了通过光学片的周边部分的光线产生的重影或闪光。 周边光束折射面等效于具有负折射率的透镜的表面或三角形棱镜的一个双面平面，其顶点指向光学片的光轴。 透镜几何由一组四个不等式控制。 有效孔可以使用凸形，平面或凹形。

公开(公告)号：US08922907B2

公开(公告)日：2014-12-30

申请号：US13571594

申请日：2012-08-10

申请人： Motoyuki Ohtake ,  Hideki Kai ,  Hiroyuki Matsumoto

发明人： Motoyuki Ohtake ,  Hideki Kai ,  Hiroyuki Matsumoto

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

CPC分类号： G02B15/173 ,  G02B15/14 ,  G02B15/20

摘要： A variable focal length lens system including: 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 sequentially arranged from a side where an object is present. An aperture stop is disposed between the second and third lens groups. The first to fourth lens groups are so moved that the distance between the first and second lens groups increases, the distance between the second and third lens groups decreases, and the distance between the third and fourth lens groups decreases when a lens position setting is changed from a wide angle end state to a telescopic end state. The third lens group includes a negative lens and a positive lens disposed on the image side thereof. The variable focal length lens system satisfies the conditional expression, 0.35

摘要翻译： 一种可变焦距透镜系统，包括：具有正光焦度的第一透镜组; 具有负功率的第二透镜组; 具有正功率的第三透镜组; 以及从存在物体的一侧顺序排列的具有正功率的第四透镜组。 孔径光阑设置在第二和第三透镜组之间。 第一至第四透镜组被移动，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，并且当透镜位置设置改变时第三透镜组与第四透镜组之间的距离减小 从广角端状态到伸缩端状态。 第三透镜组包括位于其像侧的负透镜和正透镜。 可变焦距透镜系统满足条件表达式0.35

公开(公告)号：US20110157721A1

公开(公告)日：2011-06-30

申请号：US12972770

申请日：2010-12-20

申请人： Motoyuki Ohtake

发明人： Motoyuki Ohtake

IPC分类号： G02B7/10

CPC分类号： G02B7/102 ,  G02B15/173 ,  G03B17/04

摘要： A lens barrel includes: a variable focal length lens system including at least three movable lens groups; and guiding means for moving the variable focal length lens system forward and backward in an optical axis direction. The variable focal length lens system includes at least first, second and third lens groups having positive, negative and positive refracting power, respectively, arranged in this order from an object side. When a lens position setting is changed from a wide angle end state to a telescopic end state, at least the first and third lens groups are moved toward the object side such that air separation between the first and second lens groups monotonously increases and air separation between the second and third lens groups monotonously decreases. The guiding means includes a fixed frame, a rotating frame, a rectilinear guiding frame, a first guide frame, and a second guide frame.

摘要翻译： 透镜镜筒包括：可变焦距透镜系统，包括至少三个可移动透镜组; 以及用于在光轴方向上前后移动可变焦距透镜系统的引导装置。 可变焦距透镜系统包括分别从物体侧依次排列的具有正，负和正折射率的至少第一，第二和第三透镜组。 当透镜位置设置从广角端状态改变为伸缩端状态时，至少第一透镜组和第三透镜组朝向物体侧移动，使得第一和第二透镜组之间的空气分离单调增加， 第二和第三透镜组单调减少。 引导装置包括固定框架，旋转框架，直线引导框架，第一引导框架和第二引导框架。

公开(公告)号：US07911697B2

公开(公告)日：2011-03-22

申请号：US12801120

申请日：2010-05-24

申请人： Motoyuki Ohtake ,  Ken Tanaka ,  Tsutomu Naitou ,  Takuya Tsutsumi ,  Eiji Yano ,  Tatsuyuki Takahashi

发明人： Motoyuki Ohtake ,  Ken Tanaka ,  Tsutomu Naitou ,  Takuya Tsutsumi ,  Eiji Yano ,  Tatsuyuki Takahashi

IPC分类号： G02B27/64

CPC分类号： G02B15/173 ,  G02B27/646

摘要： A lens includes a front group including a plurality of lens groups; and a rear group that is provided on an image side of the front group and that includes a negative lens and a positive lens. The positive lens has a flat lens surface on its image side, and is tiltable about a spherical center of its object side lens surface that is convex on the object side. When a lens system is inclined, the positive lens is tilted in relation to the optical axis of the lens system based on: a focal length of the overall lens system; an angle of the optical axis of the lens system after being inclined in relation to the optical axis before being inclined; a distance between the image side lens surface of the positive lens and the image plane; and a refractive index of the positive lens.

摘要翻译： 透镜包括：包括多个透镜组的前组; 以及设置在前组的图像侧并且包括负透镜和正透镜的后组。 正透镜在其像侧具有平坦的透镜表面，并且可以在其物体侧的凸面的物体侧透镜表面的球面中心倾斜。 当透镜系统倾斜时，正透镜相对于透镜系统的光轴倾斜，基于：整个透镜系统的焦距; 在倾斜之前相对于光轴倾斜后的透镜系统的光轴的角度; 正透镜的像侧透镜表面与像平面之间的距离; 和正透镜的折射率。

公开(公告)号：US20100220399A1

公开(公告)日：2010-09-02

申请号：US12654930

申请日：2010-01-08

申请人： Motoyuki Ohtake

发明人： Motoyuki Ohtake

IPC分类号： G02B15/16

CPC分类号： G02B15/173

摘要： A variable focal distance lens system includes 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, which are sequentially disposed from an object side to an image side. The system satisfies −0.65

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射光焦度的第四透镜组，其从 物体侧到图像侧。 系统满足-0.65 <（R33-R34）/（R33±R34）< - 0.25和-1.0 <（R22-R23）/（R22±R23）< - 0.6，其中R33表示最大图像的曲率半径 第三透镜组的胶合透镜的侧表面R34表示设置在最大像侧的第三透镜组的正透镜的物体侧表面的曲率半径，R 22表示图像的曲率半径 设置在最物体侧的第二透镜组的负透镜的侧表面，并且R23表示第二透镜组的胶合透镜的最物体侧表面的曲率半径。

公开(公告)号：US20100220398A1

公开(公告)日：2010-09-02

申请号：US12654934

申请日：2010-01-08

申请人： Motoyuki Ohtake

发明人： Motoyuki Ohtake

IPC分类号： G02B15/16

CPC分类号： G02B15/173

摘要： A variable-focal-length lens system includes first to fifth lens groups having positive, negative, positive, negative, and positive refractive powers, respectively, from the object side. As the lens-position state changes from wide-angle to telephoto, the air space between the first and second lens groups increases, the air space between the second and third lens groups decreases, the air space between the third and fourth lens groups changes, the air space between the fourth and fifth lens groups increases, the first lens group moves monotonously toward the object, the second lens group is fixed in the optical-axis direction, and the third and fourth lens groups move toward the object. Conditions 0.2

摘要翻译： 可变焦距透镜系统包括从物体侧分别具有正，负，正和正折射光焦度的第一至第五透镜组。 当透镜位置状态从广角变化到长焦时，第一和第二透镜组之间的空气空间增加，第二和第三透镜组之间的空气间隙减小，第三和第四透镜组之间的空气空间发生变化， 第四透镜组和第五透镜组之间的空间增加，第一透镜组朝向物体单调移动，第二透镜组在光轴方向上固定，第三透镜​​组和第四透镜组朝向物体移动。 满足条件0.2

公开(公告)号：US07692870B2

公开(公告)日：2010-04-06

申请号：US12216950

申请日：2008-07-14

申请人： Motoyuki Ohtake

发明人： Motoyuki Ohtake

IPC分类号： G02B15/14

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：US20100033836A1

公开(公告)日：2010-02-11

申请号：US12458708

申请日：2009-07-21

申请人： Motoyuki Ohtake

发明人： Motoyuki Ohtake

IPC分类号： G02B15/14

CPC分类号： G02B15/173

摘要： A variable focal length lens system includes: a first lens group having a positive refracting power; a second lens group having a negative refracting power; a third lens group having a positive refracting power; a fourth lens group having a negative refracting power; a fifth lens group having a negative refracting power; and a sixth lens group having a positive refracting power; the first to sixth lens groups being disposed in order from an object side.

摘要翻译： 可变焦距透镜系统包括：具有正折射率的第一透镜组; 具有负折射率的第二透镜组; 具有正折射率的第三透镜组; 具有负折射力的第四透镜组; 具有负折射力的第五透镜组; 和具有正折射率的第六透镜组; 第一至第六透镜组从物体侧依次布置。