公开(公告)号：US5173805A

公开(公告)日：1992-12-22

申请号：US580357

申请日：1990-09-10

申请人： Kazuo Tanaka ,  Keiji Ikemori ,  Masatake Kato

发明人： Kazuo Tanaka ,  Keiji Ikemori ,  Masatake Kato

IPC分类号： G02B7/10 ,  G02B15/16 ,  G02B15/20 ,  G02B15/22

CPC分类号： G02B15/16

摘要： In the disclosed zoom lens three or more zoom components are located on the image side of a stationary component which is stationary during both focusing and zooming. The three or more zoom components are moved during zooming and are provided into a front portion which is moved for focusing, and a rear portion which remains stationary during focusing. The front focusing portion includes at least two components which move together when focusing, but when zooming move relative to each other so as to change the focal length or power of the front portion. This has the advantageous effect of reducing the difference between the amount the front portion needs to move for focusing at the wide angle position and at telephoto position.

摘要翻译： 在所公开的变焦镜头中，三个或更多个变焦部件位于在聚焦和变焦期间都是静止的静止部件的图像侧。 三个或更多个变焦分量在变焦期间被移动，并且被提供到前进部分，该前部部分被移动用于聚焦，以及后部部分在聚焦期间保持静止。 前聚焦部分包括至少两个在聚焦时一起移动的部件，但是当变焦相对于彼此移动时，以改变前部的焦距或功率。 这具有减小前部需要移动用于在广角位置和远摄位置处聚焦的量之间的差异的有利效果。

公开(公告)号：US4826301A

公开(公告)日：1989-05-02

申请号：US926648

申请日：1986-11-03

申请人： Keiji Ikemori

发明人： Keiji Ikemori

IPC分类号： G02B13/18 ,  G02B13/20

CPC分类号： G02B13/20 ,  G02B13/18

摘要： A photographic objective having a soft focus function comprising, from front to rear, a first lens component of positive power, a second lens component having a meniscus-shaped lens of forward convexity, an aperture stop, and a third lens component, the second lens component being axially movable for the purpose of producing a soft focus effect, and a technique of compensating for the image shift resulting from the movement of the soft focus-introducing lens component by automatically readjusting the position of the focusing lens component, are disclosed.

摘要翻译： 具有软焦点功能的照相物镜包括从前到后的正功率的第一透镜部件，具有前凸的弯月面透镜的第二透镜部件，孔径光阑和第三透镜部件，第二透镜 公开了用于产生软焦点效果的轴向可移动部件，以及通过自动重新调整聚焦透镜部件的位置来补偿由于通过软焦点引入透镜部件的移动而产生的图像偏移的技术。

公开(公告)号：US4750821A

公开(公告)日：1988-06-14

申请号：US768408

申请日：1985-08-22

申请人： Hiroshi Yamamoto ,  Keiji Ikemori

发明人： Hiroshi Yamamoto ,  Keiji Ikemori

IPC分类号： G02B7/10 ,  G02B7/04

CPC分类号： G02B7/10

摘要： A zoom lens optical system having the focusing provision at a rear zoom component with an automatic mechanism for varying its axial position as a function of the focal length of the entire system with an object at a constant distance. The automatic mechanism includes a motor whose stator and rotor are formed to hollow cylindrical shapes and a device for producing a driving signal for the motor with the power density thereof varying with the variation of the focal length.

摘要翻译： 一种变焦透镜光学系统，其具有在后变焦部件处的聚焦设置，该自动机构用于随着物体处于恒定距离的整个系统的焦距而改变其轴向位置。 该自动机构包括其定子和转子形成为中空圆柱形状的电动机以及用于产生电动机的驱动信号的装置，其功率密度随着焦距的变化而变化。

公开(公告)号：US4730199A

公开(公告)日：1988-03-08

申请号：US795619

申请日：1985-11-06

申请人： Keiji Ikemori ,  Ichiro Ohnuki ,  Masaharu Eguchi

发明人： Keiji Ikemori ,  Ichiro Ohnuki ,  Masaharu Eguchi

IPC分类号： G02B15/20 ,  G02B5/04 ,  G02B13/00 ,  G02B15/173 ,  G03B19/12

CPC分类号： G03B19/12 ,  G02B15/173 ,  G02B5/04 ,  Y10S358/906

摘要： A photographic apparatus comprising an objective including a front lens unit for forming an image of an object and a rear lens unit, a beam splitter arranged between the front and rear lens units for splitting an optical path, a viewfinder including a roof type prism and an eyepiece and arranged on the optical path split by the beam splitter so as to observe the object image by the front lens unit, and an image receiver on which an object image of different magnification is formed by the objective.

摘要翻译： 一种摄影装置，包括：物镜，其包括用于形成物体的图像的前透镜单元和后透镜单元;布置在用于分割光路的前透镜单元和后透镜单元之间的分束器，包括屋顶型棱镜的取景器和 目镜，并配置在由分束器分割的光路上，以便通过前透镜单元观察物体图像，以及图像接收器，通过该目标形成不同倍率的物体图像。

公开(公告)号：US4707103A

公开(公告)日：1987-11-17

申请号：US828959

申请日：1986-02-12

申请人： Keiji Ikemori ,  Takeshi Koyama

发明人： Keiji Ikemori ,  Takeshi Koyama

IPC分类号： G02B15/177 ,  G02B23/14 ,  G03B3/00 ,  G03B13/08

CPC分类号： G02B15/177 ,  G02B23/145

摘要： An optical system of variable magnification including an image forming lens system having at least one optical member axially movable for varying the image magnification, and a light beam splitting device in the optical path of the lens system, the optical member and the splitting device being arranged to move simultaneously.

摘要翻译： 一种可变倍率的光学系统，包括具有至少一个光学构件的成像透镜系统，所述成像透镜系统具有轴向可移动以改变图像放大率;以及光束分离装置，在所述透镜系统的光路中，所述光学构件和所述分离装置被布置 同时移动

公开(公告)号：US4684223A

公开(公告)日：1987-08-04

申请号：US819991

申请日：1986-01-15

申请人： Keiji Ikemori ,  Masatake Kato

发明人： Keiji Ikemori ,  Masatake Kato

IPC分类号： G02B15/20 ,  G02B15/173 ,  G02B9/64 ,  G02B15/177

CPC分类号： G02B15/173

摘要： In the disclosed zoom lens of the rear focusing type, three lens groups are axially moved for zooming from the wide angle to the telephoto settings or vice versa. A focusing action is imparted into the second or third lens group counting from the front object end, and the latter groups are arranged for moving in one direction during zooming from the wide angle to the telephoto settings.

摘要翻译： 在所公开的后聚焦型变焦镜头中，三个透镜组被轴向移动，用于从广角变焦到远摄设置，反之亦然。 聚焦动作被赋予从前方物体端开始计数的第二或第三透镜组，并且后面的组布置成在从广角变焦到远摄设置的变焦期间沿一个方向移动。

公开(公告)号：US4666257A

公开(公告)日：1987-05-19

申请号：US705565

申请日：1985-02-26

申请人： Tsunefumi Tanaka ,  Keiji Ikemori ,  Nozomu Kitagishi ,  Sadatoshi Takahashi ,  Kikuo Momiyama

发明人： Tsunefumi Tanaka ,  Keiji Ikemori ,  Nozomu Kitagishi ,  Sadatoshi Takahashi ,  Kikuo Momiyama

IPC分类号： G02B13/18 ,  G02B15/173 ,  G02B15/20 ,  G02B9/64 ,  G02B15/14

CPC分类号： G02B15/173

摘要： A compact zoom lens including, from front to rear, a first lens unit of positive power, a second lens unit of negative power, a third lens unit of positive power and, if desired, further a fourth lens unit, with the separations between the first and second units, between the second and third units and between the third and fourth units being made variable to vary the focal length of the entire system, wherein as the focal length is varied from the shortest to the longest value, the first and third units move axially forward, and the third unit is provided with a positive lens having an aspherical surface.

摘要翻译： 一种紧凑型变焦透镜，包括从前到后具有正功率的第一透镜单元，负功率的第二透镜单元，正光焦度的第三透镜单元，以及如果需要的话，还具有第四透镜单元， 在第二单元和第三单元之间以及第三单元和第四单元之间的第一单元和第二单元是可变的，以改变整个系统的焦距，其中当焦距从最短到最长值变化时，第一和第三单元 单元轴向向前移动，并且第三单元设置有具有非球面的正透镜。

公开(公告)号：US4586793A

公开(公告)日：1986-05-06

申请号：US478890

申请日：1983-03-25

申请人： Tsunefumi Tanaka ,  Keiji Ikemori

发明人： Tsunefumi Tanaka ,  Keiji Ikemori

IPC分类号： G02B15/20 ,  G02B15/177 ,  G02B15/22 ,  G02B9/64

CPC分类号： G02B15/177

摘要： A zoom lens having a lst lens component of negative power counting from front, and a 2nd lens component of positive power, with an air separation therebetween being varied to effect zooming, wherein said 2nd component is divided into two components one of which is made movable for focusing, thus minimizing the bulk and size of the entire system, while still achieving good correction of aberrations.

摘要翻译： 具有从正面计数的负功率的第一透镜分量和正功率的第二透镜分量的变焦透镜被变化以实现变焦，其中所述第二分量被分成两个分量，其中一个是可移动的 用于聚焦，从而使整个系统的体积和尺寸最小化，同时仍能实现良好的像差校正。

公开(公告)号：US4456340A

公开(公告)日：1984-06-26

申请号：US319589

申请日：1981-11-09

申请人： Keiji Ikemori

发明人： Keiji Ikemori

IPC分类号： G02B15/12 ,  G02B15/14

CPC分类号： G02B15/12 ,  G02B15/14

摘要： An optical system has a convertible focal length. A positive lens system having a positive refractive power is supplemented by a negative lens system having a negative refractive power between said positive lens system and an image plane to convert the focal length. The front principal point of the aforesaid negative lens system thereby assumes a position rearwardly of the rear principal point thereof, and is made to lie rearwardly of the rear principal point of the aforesaid positive lens system. The overall length of the aforesaid negative lens system is longer than 0.1 times but shorter than 0.5 times the back focus of the aforesaid positive lens system.

摘要翻译： 光学系统具有可转换焦距。 具有正折光力的正透镜系统由在所述正透镜系统和像平面之间具有负折光力的负透镜系统补充以转换焦距。 因此，前述负透镜系统的前主要点位于其后方主点后方的位置，并使其位于上述正透镜系统的后方主点的后方。 上述负透镜系统的总长度大于上述正透镜系统的后焦距的0.1倍但小于0.5倍。

公开(公告)号：US4437746A

公开(公告)日：1984-03-20

申请号：US361838

申请日：1982-03-25

申请人： Keiji Ikemori

发明人： Keiji Ikemori

IPC分类号： G02B5/00 ,  G03B7/099 ,  G03B7/0997 ,  G03B7/00

CPC分类号： G03B7/09972

摘要： In the disclosed device, light radiated from an object image formed on the focal plane by an objective lens is directed to a photo-cell using a condenser lens. The condenser lens has reflection areas formed in portions of the surfaces thereof. According to an embodiment, the surface closer to the oncoming light is mirrored at the central portion and the more remote surface is mirrored marginally. In another embodiment, the more remote area is recessed to receive the photo-cell.

摘要翻译： 在所公开的装置中，通过物镜从形成在焦平面上的物体图像发出的光被引导到使用聚光透镜的光电池。 聚光透镜具有形成在其表面的一部分中的反射区域。 根据一个实施例，靠近迎面而来的光的表面在中心部分被镜像，并且较远的表面被微小地镜像。 在另一个实施例中，更偏远的区域被凹入以接收光电池。