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：US4789227A

公开(公告)日：1988-12-06

申请号：US107876

申请日：1987-10-08

申请人： Tsunefumi Tanaka ,  Keiji Ikemori ,  Masatake Kato ,  Kazuo Tanaka

发明人： Tsunefumi Tanaka ,  Keiji Ikemori ,  Masatake Kato ,  Kazuo Tanaka

IPC分类号： G02B15/173 ,  G02B15/00

CPC分类号： G02B15/173

摘要： A zoom lens which performs focusing by using part of a movable lens unit. In zooming, a lens unit V for changing the focal length of the entire system and another lens unit C for maintaining the constant position of an image plane move in certain relation to each other. For all objects in the focusing range, a part of either the aforesaid lens unit V or the aforesaid lens unit C is made to move to effect focusing at any station in the entire zooming range, thereby the zoom lens can be constructed in compact form.

摘要翻译： 通过使用可移动透镜单元的一部分进行聚焦的变焦透镜。 在变焦中，用于改变整个系统的焦距的透镜单元V和用于保持图像平面的恒定位置的另一透镜单元C以一定的关系移动。 对于聚焦范围中的所有物体，使得上述透镜单元V或上述透镜单元C的一部分在整个变焦范围内移动以在任何位置移动以实现聚焦，从而可以以紧凑的形式构造变焦镜头。

公开(公告)号：US4702567A

公开(公告)日：1987-10-27

申请号：US17025

申请日：1987-02-18

申请人： Masatake Kato ,  Keiji Ikemori ,  Tsunefumi Tanaka ,  Kazuo Tanaka

发明人： Masatake Kato ,  Keiji Ikemori ,  Tsunefumi Tanaka ,  Kazuo Tanaka

IPC分类号： G02B15/173 ,  G02B15/18

CPC分类号： G02B15/173

摘要： A zoom lens having a component V which has at least one group of lens elements axially movable mainly for changing image magnification, a component C which has at least one group of lens elements axially movable for compensating for the image shift resulting from the change of image magnification to maintain the constant position of the image plane, and a compound component F positioned on the image side of either, or both, of said component V and said component C to be movable with zooming, and having a plurality of lens groups contributing to a small overall refractive power, whereby the focusing provision is made in at least one of the groups in said compound component F.

摘要翻译： 具有分量V的变焦透镜具有至少一组主要用于改变图像放大率的可轴向移动的透镜元件组; C组件，其具有至少一组轴向可移动的透镜元件，用于补偿由图像变化引起的图像偏移 以保持图像平面的恒定位置，以及位于所述部件V和所述部件C中的任意一方或两者的图像侧上的复合部件F可以变焦地移动，并且具有多个透镜组， 小的总屈光力，由此在所述化合物组分F中的至少一个基团中进行聚焦。

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：US4687302A

公开(公告)日：1987-08-18

申请号：US903901

申请日：1986-09-04

申请人： Keiji Ikemori ,  Tsunefumi Tanaka ,  Masatake Kato

发明人： Keiji Ikemori ,  Tsunefumi Tanaka ,  Masatake Kato

IPC分类号： G02B15/177 ,  G02B15/14

CPC分类号： G02B15/177

摘要： A zoom lens comprising, from front to rear, a negative first component, a positive second component, a positive or negative third component and a positive fourth component. To effect zooming, the first, second and third components are made to axially move in differential relation to each other. This makes it possible to achieve a minimization of the bulk and size of the entire system and a valuable increase in the angle of view field for the wide angle setting.

摘要翻译： 一种变焦透镜，包括从前到后的负的第一分量，正的第二分量，正或负的第三分量和正的第四分量。 为了实现变焦，使第一，第二和第三分量彼此以差分关系轴向移动。 这使得可以实现整个系统的体积和尺寸的最小化以及广角设置的视野范围的有价值的增加。

公开(公告)号：US4630899A

公开(公告)日：1986-12-23

申请号：US532577

申请日：1983-09-15

申请人： Masatake Kato ,  Keiji Ikemori

发明人： Masatake Kato ,  Keiji Ikemori

IPC分类号： G02B15/15 ,  G02B15/173 ,  G02B15/14

CPC分类号： G02B15/173

摘要： In the disclosed zoom lens, a varifocal lens system includes a positive first component at the object end of the system and is movable closer to the object in a telephoto position than in a wide angle position. A diaphragm on the image end of the varifocal lens system is movable during zooming and the location of the diaphragm in the telephoto position is closer to the object than in the wide angle position.

摘要翻译： 在所公开的变焦透镜中，变焦透镜系统包括在系统的物体端处的正的第一分量，并且在远摄位置比在广角位置更靠近物体移动。 变焦透镜系统的图像端上的光阑在变焦期间是可移动的，并且在望远位置处的光阑的位置比在广角位置更接近物体。

公开(公告)号：US4466707A

公开(公告)日：1984-08-21

申请号：US244780

申请日：1981-03-17

申请人： Keiji Ikemori ,  Kazuo Tanaka

发明人： Keiji Ikemori ,  Kazuo Tanaka

IPC分类号： G02B15/02 ,  G02B15/04 ,  G02B15/14

CPC分类号： G02B15/14 ,  G02B15/02 ,  G02B15/04

摘要： A compact variable magnification objective lens system with interchangeable lens components comprising, from front to rear, a first lens component of positive power, a second lens component of negative power and a third lens component of positive power. The focal length of the entire system can be changed by interchanging the second lens component by another lens component having a different refractive power from that of the second lens component and by shifting the first lens component simultaneously.

摘要翻译： 一种具有可互换透镜部件的紧凑型可变倍率物镜系统，包括从前到后的正功率的第一透镜部件，负功率的第二透镜部件和正光焦度的第三透镜部件。 通过将第二透镜部件与具有与第二透镜部件的折射力不同的折射力的另一透镜部件并且同时移动第一透镜部件来交换整个系统的焦距。

公开(公告)号：US4422734A

公开(公告)日：1983-12-27

申请号：US219977

申请日：1980-12-24

申请人： Kazuo Tanaka ,  Keiji Ikemori

发明人： Kazuo Tanaka ,  Keiji Ikemori

IPC分类号： G02B15/12 ,  G02B9/62 ,  G02B9/64 ,  G02B15/10

CPC分类号： G02B9/62 ,  G02B9/64

摘要： Disclosed is a lens system having a principal lens, a photographic film and an auxiliary lens which can be mounted between the principal lens and the photographic lens and has a negative refractive power. The auxiliary lens consisting of a first positive lens having a front surface with large radius and a convex rear surface at the image side, a second bi-concave lens and a third positive lens having a convex front surface at the object side and a rear surface with large radius in sequence from the object side, while the axial distance between the first positive lens and the second bi-concave lens is larger than that between the second bi-concave lens and the third positive lens and the second bi-concave lens and the third positive lens have a negative composed refraction power.

摘要翻译： 公开了一种透镜系统，其具有可以安装在主透镜和摄影透镜之间并具有负折光力的主透镜，照相胶片和辅助透镜。 辅助透镜由具有大半径的前表面和图像侧的凸表面的第一正透镜，第二双凹透镜和在物侧具有凸前表面的第三正透镜组成， 从物体侧起依次具有大的半径，而第一正透镜和第二双凹透镜之间的轴向距离大于第二双凹透镜与第三正透镜和第二双凹透镜之间的轴向距离，以及 第三正透镜具有负折射率。

公开(公告)号：US5576779A

公开(公告)日：1996-11-19

申请号：US320555

申请日：1994-10-11

申请人： Keiji Ikemori ,  Yoshinori Itoh

发明人： Keiji Ikemori ,  Yoshinori Itoh

IPC分类号： G03B13/12 ,  G02B7/10 ,  G02B13/18 ,  G02B15/16 ,  G02B23/14 ,  G03B3/00

CPC分类号： G02B15/177 ,  G02B7/10 ,  G03B13/12 ,  G02B23/145

摘要： A camera system comprising a photographic lens having a plurality of lens units movable along a photographic optical axis when zooming, and a finder optic having a plurality of lens units movable along a finder optical axis when zooming, wherein the amounts of zooming movement of at least one of the lens units of the photographic lens and at least one of the lens units of the finder optic are the same.

摘要翻译： 一种照相机系统，包括具有多个透镜单元的照相镜头，所述照相镜头在变焦时可沿摄影光轴移动;以及取景器光学器件，具有可在放大时沿着取景器光轴移动的多个透镜单元，其中至少 照相镜头的透镜单元之一和取景器光学元件的至少一个透镜单元是相同的。

公开(公告)号：US5270866A

公开(公告)日：1993-12-14

申请号：US797165

申请日：1991-11-26

申请人： Kouji Oizumi ,  Keiji Ikemori ,  Yasuhisa Sato ,  Yasuyuki Yamada ,  Hiroki Nakayama ,  Takashi Matsushita

发明人： Kouji Oizumi ,  Keiji Ikemori ,  Yasuhisa Sato ,  Yasuyuki Yamada ,  Hiroki Nakayama ,  Takashi Matsushita

IPC分类号： G02B15/17 ,  G02B15/14 ,  G02B15/177

CPC分类号： G02B15/177

摘要： A zoom lens comprising, from front to rear, a first lens unit of negative power, a second lens unit of positive power and a third lens unit of negative power, the second and third lens units being moved to effect zooming, and the third lens unit having its focal length f.sub.3 laid in the following range:0.5 f.sub.W

摘要翻译： 一种变焦透镜，包括从前到后具有负功率的第一透镜单元，正功率的第二透镜单元和负功率的第三透镜单元，所述第二和第三透镜单元被移动以实现变焦，并且所述第三透镜 其焦距f3放置在以下范围内的单位：0.5 fW <| f3| <4 fT其中fW和fT是整个系统的最短和最长焦距。