公开(公告)号：US5436683A

公开(公告)日：1995-07-25

申请号：US305760

申请日：1994-09-14

申请人： Koichi Ohshita ,  Atsushi Shibayama ,  Susumu Sato

发明人： Koichi Ohshita ,  Atsushi Shibayama ,  Susumu Sato

IPC分类号： G03B37/00 ,  G02B15/16 ,  G03B1/50 ,  G03B17/28

CPC分类号： G02B15/161 ,  G03B1/50 ,  G03B37/00 ,  G03B2217/248

摘要： In a phototaking lens with the focal length variable from a predetermined value at the wide-angle end position to another predetermined value at the telephoto end position, a part of lens elements constituting the phototaking lens is rendered movable relative to other lens components. There is provided means for converting the lens, by the relative movement of a part of the lens elements, to a panorama state with a focal length even shorter than that at the wide-angle end position. The phototaking lens is a zoom lens having a first lens group of a positive refractive power and a second lens group of a negative refractive power in the order from the object side, wherein the focal length is varied by a change in the distance between the first and second lens groups, and the panorama state is obtained by a relative movement of the first lens group relative to the second lens group.

摘要翻译： 在焦距从广角端位置的预定值变化到望远端位置处的另一预定值的摄像透镜中，构成摄像透镜的透镜元件的一部分能够相对于其他透镜部件移动。 提供了用于通过一部分透镜元件的相对运动将透镜转换成具有比广角端位置处的焦距更短的焦距的全景状态的装置。 感光透镜是具有正屈光力的第一透镜组和物镜侧的次数的负屈光力的第二透镜组的变焦透镜，其中焦距通过第一和第二像素之间的距离的变化而变化 和第二透镜组，并且通过第一透镜组相对于第二透镜组的相对运动获得全景状态。

公开(公告)号：US06124984A

公开(公告)日：2000-09-26

申请号：US990063

申请日：1997-12-12

申请人： Atsushi Shibayama ,  Koichi Ohshita

发明人： Atsushi Shibayama ,  Koichi Ohshita

IPC分类号： G02B15/177 ,  G02B27/14 ,  G02B15/14 ,  G02B3/02

CPC分类号： G02B15/177

摘要： A variable magnification zoom lens system comprising: in order from the object side, a first lens group having a negative refractive power and a focal length f1; a second lens group having a positive refractive power; and a third lens group having a positive refractive power and a focal length f3 with the first and second lens group arranged to be driven together such that when zooming is performed from the maximum wide-angle state to the maximum telephoto state of the zoom lens system, the first lens group and the second lens group move such that the distance between the first lens group and the second lens group is decreased, and at the same time, the distance between second lens group and the third lens group is increased and with the following condition being fulfilled: 0.4

摘要翻译： 一种可变倍率变焦透镜系统，包括：从物体侧起依次具有负折射力和焦距f1的第一透镜组; 具有正屈光力的第二透镜组; 以及具有正折射力的第三透镜组和焦距f3，其中第一和第二透镜组被布置成被驱动在一起，使得当从变焦透镜系统的最大广角状态到最大远摄状态执行变焦时 第一透镜组和第二透镜组移动使得第一透镜组和第二透镜组之间的距离减小，并且同时第二透镜组和第三透镜组之间的距离增加，并且与 满足以下条件：0.4

公开(公告)号：US5640614A

公开(公告)日：1997-06-17

申请号：US406172

申请日：1995-03-17

申请人： Koichi Ohshita ,  Atsushi Shibayama ,  Susumu Sato

发明人： Koichi Ohshita ,  Atsushi Shibayama ,  Susumu Sato

IPC分类号： G03B37/00 ,  G02B15/16 ,  G03B1/50 ,  G03B17/28 ,  G03B17/02

CPC分类号： G02B15/161 ,  G03B1/50 ,  G03B37/00 ,  G03B2217/248

摘要： In a phototaking lens with the focal length variable from a predetermined value at the wide-angle end position to another predetermined value at the telephoto end position, a part of lens elements constituting the phototaking lens is rendered movable relative to other lens components. There is provided means for converting the lens, by the relative movement of a part of the lens elements, to a panorama state with a focal length even shorter than that at the wide-angle end position. The phototaking lens is a zoom lens having a first lens group of a positive refractive power and a second lens group of a negative refractive power in the order from the object side, wherein the focal length is varied by a change in the distance between the first and second lens groups, and the panorama state is obtained by a relative movement of the first lens group relative to the second lens group.

摘要翻译： 在焦距从广角端位置的预定值变化到望远端位置处的另一预定值的摄像透镜中，构成摄像透镜的透镜元件的一部分能够相对于其他透镜部件移动。 提供了用于通过一部分透镜元件的相对运动将透镜转换成具有比广角端位置处的焦距更短的焦距的全景状态的装置。 感光透镜是具有正屈光力的第一透镜组和物镜侧的次数的负屈光力的第二透镜组的变焦透镜，其中焦距通过第一和第二像素之间的距离的变化而变化 和第二透镜组，并且通过第一透镜组相对于第二透镜组的相对运动获得全景状态。

公开(公告)号：US5949588A

公开(公告)日：1999-09-07

申请号：US9129

申请日：1998-01-20

申请人： Koichi Ohshita ,  Atsushi Shibayama

发明人： Koichi Ohshita ,  Atsushi Shibayama

IPC分类号： G02B13/06 ,  G02B13/04 ,  G02B3/02

CPC分类号： G02B9/12 ,  G02B13/06

摘要： A super-wide angle lens, sequentially from an object side, comprises a first negative lens L1, a second negative lens L2, and a third positive lens L3. The first negative lens L1 with its concave surface toward an image side has an image-side surface with a curvature larger than that on an object-side surface. The second negative lens L2 is disposed at a predetermined spacing from the first negative lens L1 and takes a negative meniscus shape with its convex surface toward the object side. The third positive lens L3 has its convex surface toward the object side.

摘要翻译： 超广角镜头从物体侧顺序地包括第一负透镜L1，第二负透镜L2和第三正透镜L3。 具有朝向图像侧的凹面的第一负透镜L1具有比物体侧表面大的曲率的图像侧表面。 第二负透镜L2以与第一负透镜L1成规定间隔的方式配置，其朝向物侧的凸面朝向负弯月形状。 第三正透镜L3具有朝向物体侧的凸面。

公开(公告)号：US5245375A

公开(公告)日：1993-09-14

申请号：US985491

申请日：1992-11-30

申请人： Koichi Ohshita

发明人： Koichi Ohshita

IPC分类号： G03B13/08 ,  G03B17/20

CPC分类号： G03B13/08 ,  G03B17/20

摘要： In a finder optical system wherein a field frame and a field lens are placed near an objective lens and a real image plane made by the objective lens and a prism having a reflecting surface is disposed between the field frame and an eyepiece, a transmitting surface substantially perpendicular to the optical axis of reflected light reflected by the reflecting surface of the prism is provided on the reflecting surface of the prism or by cutting away the reflecting surface, and an information display system for displaying desired information through that transmitting surface is provided. The information display system is provided at a position optically symmetrical with the field frame.

摘要翻译： 在场景框架和场透镜放置在物镜附近并且由物镜制成的实像和具有反射面的棱镜设置在场框和目镜之间的取景器光学系统中，基本上 垂直于棱镜的反射面反射的反射光的光轴被设置在棱镜的反射面上，或者通过切除反射面而形成，通过该透射面显示期望的信息的信息显示系统。 信息显示系统设置在与场帧光学对称的位置。

公开(公告)号：US5233475A

公开(公告)日：1993-08-03

申请号：US744940

申请日：1991-08-14

申请人： Koichi Ohshita

发明人： Koichi Ohshita

IPC分类号： G03B13/06 ,  G02B5/04 ,  G02B27/00

CPC分类号： G02B27/0018 ,  G02B5/04

摘要： A rectangular prism includes an entrance surface for receiving light, an exit surface from which the light emerges, two reflecting surfaces orthogonal to each other for directing the light ray incident from the entrance surface to the exit surface, and a groove of V-shaped cross-section disposed in the boundary between the entrance surface and the exit surface.

摘要翻译： 矩形棱镜包括用于接收光的入射表面，出射光的出射表面，彼此正交的两个反射表面，用于将从入射表面入射的光线引导到出射表面，以及V形横截面的凹槽 设置在入口表面和出口表面之间的边界处。

公开(公告)号：US5061054A

公开(公告)日：1991-10-29

申请号：US319293

申请日：1989-03-06

申请人： Koichi Ohshita

发明人： Koichi Ohshita

IPC分类号： G03B13/06 ,  G02B5/04 ,  G02B17/04 ,  G02B17/08 ,  G02B23/14 ,  G03B13/02

CPC分类号： G02B23/14 ,  G02B17/045 ,  G02B5/04 ,  G02B23/145

摘要： A Keplerian finder optical system composed of, in succession from the object side, an objective lens of a positive refractive power, a field lens of a positive refractive power positioned in the vicinity of the focal plane of the objective lens, and an eyepiece lens for observing an image of the object formed on the focal plane of the objective lens, comprises a field diaphragm positioned in the vicinity of the focal plane of the objective lens, a first reflecting device with two reflecting faces positioned in the optical path between the objective lens and the field diaphragm, and second reflecting device with two other reflecting faces, positioned between the field diaphragm and the eyepiece lens.

摘要翻译： 开普勒式取景器光学系统，其从物体侧连续地构成正屈光力的物镜，位于物镜的焦平面附近的正折光力的场透镜，以及用于 观察形成在物镜的焦平面上的物体的图像，包括位于物镜的焦平面附近的场光膜，具有位于物镜之间的光路中的两个反射面的第一反射装置 和场隔膜，以及具有位于场隔膜和目镜之间的另外两个反射面的第二反射装置。

公开(公告)号：US5887202A

公开(公告)日：1999-03-23

申请号：US921320

申请日：1997-08-29

申请人： Motoyuki Ohtake ,  Koichi Ohshita

发明人： Motoyuki Ohtake ,  Koichi Ohshita

IPC分类号： G03B3/10 ,  G02B7/08 ,  G02B7/10 ,  G02B7/28 ,  G03B13/34 ,  G03B13/36

CPC分类号： G02B7/102

摘要： A position controlling device in a lens system with a variable focal length with high-precision focusing having a small amount of required recorded information, even when there are large number of divisions of the object distance and of the focal length includes a distance measuring device that detects the object position and transmits photographic distance information. A detecting device detects the movement amount from a standard position of the movable lens group of the lens system when the focal length of the lens system changes. A calculating device calculates the required movement of the focusing lens unit of the lens system, based on the photographic distance information and the movement amount of the movable lens unit. Finally, a controlling device drives the focusing lens unit and performs focusing, based on the required movement calculated by the calculating device. The movable lens unit moves monotonically to the object side or to an image side when the focal length of the lens system is changed. In this manner, the focusing movement required increases monotonically and gradually when the focal length of the lens system changes from the wide-angle end to the telephoto end for a given photographic distance.

摘要翻译： 具有可变焦距的具有可变焦距的透镜系统中的位置控制装置，具有少量所需记录信息的高精度对焦，即使当对象距离和焦距的分割数量大时，也包括距离测量装置， 检测物体位置并发送摄影距离信息。 当透镜系统的焦距变化时，检测装置从透镜系统的可移动透镜组的标准位置检测移动量。 计算装置基于拍摄距离信息和可移动透镜单元的移动量来计算透镜系统的聚焦透镜单元所需的移动。 最后，控制装置根据由计算装置计算的所需运动来驱动聚焦透镜单元并进行聚焦。 当透镜系统的焦距改变时，可移动透镜单元单调地移动到物体侧或图像侧。 以这种方式，当对于给定的摄影距离，当透镜系统的焦距从广角端到远摄端改变时，所需的聚焦运动单调递增地逐渐增加。

公开(公告)号：US5594518A

公开(公告)日：1997-01-14

申请号：US470573

申请日：1995-06-07

申请人： Koichi Ohshita

发明人： Koichi Ohshita

IPC分类号： G03B13/14 ,  G03B3/10 ,  G03B5/04 ,  G03B3/00

CPC分类号： G03B3/10 ,  G03B13/14 ,  G03B5/04

摘要： A camera comprises a photographing lens, a finder having its optical axis disposed substantially in parallel with the optical axis of the photographing lens and a lens drive for moving the photographing lens for focusing, the lens drive including a guide member for rectilinearly moving the photographing lens in a direction set at a predetermined angle to the optical axis of the photographing lens.

摘要翻译： 相机包括拍摄镜头，其光轴基本上与摄影镜头的光轴平行设置的取景器和用于移动用于聚焦的拍摄镜头的镜头驱动器，该镜头驱动器包括用于直线移动拍摄镜头的导向件 在与拍摄镜头的光轴成预定角度的方向上。

公开(公告)号：US5381265A

公开(公告)日：1995-01-10

申请号：US44600

申请日：1993-04-09

申请人： Koichi Ohshita

发明人： Koichi Ohshita

IPC分类号： G02B13/18 ,  G02B15/16 ,  G02B15/177 ,  G02B23/14 ,  G03B13/10

CPC分类号： G02B15/177 ,  G02B23/14 ,  G02B23/145

摘要： A Keplerian zoom finder optical system has an objective lens comprising, in succession from the object side, a first lens unit of negative refractive power, a second lens unit of positive refractive power and a third lens unit of positive refractive power and having positive refractive power as a whole, and an eyepiece of positive refractive power for enlarging and observing the focus image of the objective lens therethrough. The air gap between the first lens unit and the second lens unit is varied to thereby vary finder magnification. The Keplerian zoom finder optical system satisfies a predetermined condition.

摘要翻译： 开普勒缩放取景器光学系统具有物镜，其从物体侧依次包括负屈光力的第一透镜单元，正折光力的第二透镜单元和正折射光焦度的第三透镜单元，具有正的折光力 作为整体，以及用于放大和观察物镜的聚焦图像的正屈光力的目镜。 改变第一透镜单元和第二透镜单元之间的空气间隙，从而改变取景器放大率。 开普勒缩放取景器光学系统满足预定条件。