公开(公告)号：US5272564A

公开(公告)日：1993-12-21

申请号：US789010

申请日：1991-11-07

申请人： Kenzaburo Suzuki ,  Yoshinari Hamanishi

发明人： Kenzaburo Suzuki ,  Yoshinari Hamanishi

IPC分类号： G02B15/167 ,  G02B15/173 ,  G02B15/20 ,  G02B15/14

CPC分类号： G02B15/173

摘要： Disclosed is a zoom lens of an internal focusing system, comprising: a positive focusing lens group positioned close to an object and incorporating a focusing function; and a zoom variable power optical system including a negative variable power lens group disposed towards an image of the focusing lens group and having such a variable power function as to be movable along an optical axis. The focusing lens group includes, sequentially from an object, a first lens element having a positive refractive power, a second lens element having a positive refractive power and movable along an optical axis and a third lens element having a negative refractive power. Only the second lens element is moved along the optical axis to change a synthetic focal distance of the focusing lens group, thus effecting focusing.

摘要翻译： 本发明公开了一种内部聚焦系统的变焦透镜，包括：靠近物体定位的聚焦透镜组，并具有聚焦功能; 以及变焦可变功率光学系统，包括朝向聚焦透镜组的图像设置的负的可变功率透镜组，并具有可沿光轴移动的可变功率功能。 聚焦透镜组从物体依次包括具有正折射光焦度的第一透镜元件，具有正折光力并可沿光轴移动的第二透镜元件和具有负屈光力的第三透镜元件。 只有第二透镜元件沿着光轴移动以改变聚焦透镜组的合成焦距，从而进行聚焦。

公开(公告)号：US5253112A

公开(公告)日：1993-10-12

申请号：US974482

申请日：1992-11-12

申请人： Kenzaburo Suzuki ,  Yoshinari Hamanishi

发明人： Kenzaburo Suzuki ,  Yoshinari Hamanishi

IPC分类号： G02B15/12 ,  G02B15/08

CPC分类号： G02B15/08

摘要： The rear conversion lens of the present invention is compact and maintains an excellent imaging performance even when it is mounted on a telephoto objective lens the enlargement magnification of whose focal length is relatively high, e.g. about double and whose F-number is of the order of 2-2.8, and moreover does not intercept a light beam even in the fully open state of the aperture. The rear conversion lens of the present invention is an RCL adapted to be mounted on the image side of an objective lens and having negative refractive power for enlarging the combined focal length of itself and the objective lens, and has, in succession from the objective lens side, a first lens unit of positive or negative refractive power, a second lens unit of negative refractive power and a third lens unit of positive refractive power, the first lens unit having a positive lens most adjacent to the object side, and when the air gap between the first lens unit and the second lens unit is D.sub.1 and the air gap between the second lens unit and the third lens unit is D.sub.2 and the on-axis lens thickness from the first surface to the last surface of the RCL is .SIGMA.d and the focal length of the entire RCL system is f.sub.R, the RCL satisfies the following conditions:0.13

摘要翻译： 本发明的后转换透镜是紧凑的，并且即使将其安装在远摄物镜上也能保持优异的成像性能，其焦距的放大倍率比较高，例如 大约为双倍，其F值为2-2.8级，而且即使在光圈的完全打开状态下也不会遮挡光束。 本发明的后转换透镜是适于安装在物镜的像侧并具有负折射力的RCL，用于放大其本身和物镜的组合焦距，并且从物镜 正面或负折射力的第一透镜单元，负折光力的第二透镜单元和正折光力的第三透镜单元，所述第一透镜单元具有与物体侧最相邻的正透镜，并且当空气 第一透镜单元和第二透镜单元之间的间隙为D1，第二透镜单元和第三透镜单元之间的气隙为D2，并且从RCL的第一表面到最后表面的轴上透镜厚度为SIGMA d 并且整个RCL系统的焦距为fR，RCL满足以下条件：0.13

公开(公告)号：US5136430A

公开(公告)日：1992-08-04

申请号：US685142

申请日：1991-04-15

申请人： Yoshinari Hamanishi

发明人： Yoshinari Hamanishi

IPC分类号： G02B15/22 ,  G02B15/167 ,  G02B15/173

CPC分类号： G02B15/173

摘要： An inner focusing type telephoto zoom lens includes a fixed first lens group having a positive refractive power, the first lens group being disposed closest to the object, a second lens group having a negative refractive power, the second lens group being movable along an optical axis for focusing, a fixed third lens group having a positive refractive power, a fourth lens group having a negative refractive power, the fourth lens group being movable along the optical axis for zooming, a fifth lens group having a positive refractive power, the fifth lens group being movable along the optical axis relative to the fourth lens group, and a fixed sixth lens group having a positive refractive power. The zoom lens satisfies the following condition:0.4

摘要翻译： 内聚焦型长焦变焦透镜包括具有正折光力的固定第一透镜组，第一透镜组设置成最靠近物体，具有负折光力的第二透镜组，第二透镜组可沿光轴移动 用于聚焦，具有正折光力的固定第三透镜组，具有负折光力的第四透镜组，第四透镜组可沿光轴移动以进行变焦，具有正折光力的第五透镜组，第五透镜 组可相对于第四透镜组沿光轴移动，以及具有正折光力的固定第六透镜组。 变焦镜头满足以下条件：0.4 <| f2| / f123 <0.9其中f123是第一，第二和第三透镜组的合成焦距，f2表示第二透镜组的焦距。

公开(公告)号：US5126883A

公开(公告)日：1992-06-30

申请号：US599893

申请日：1990-10-19

申请人： Haruo Sato ,  Yoshinari Hamanishi

发明人： Haruo Sato ,  Yoshinari Hamanishi

IPC分类号： G06F13/32

CPC分类号： G06F13/32

摘要： A telephoto zoom lens, when viewed from the object, comprises: a first lens group having positive refracting power; a second lens group having negative refracting power; a third lens group having positive refacting power; a fourth lens group having positive refracting power; and a fifth lens group having negative refacting power, wherein, when magnification is varied from the wide angle end to the telephoto end, an air interval between the first lens group and the second lens group is enlarged, an air interval between the second lens group and the third lens group is reduced, an air interval between the third lens group and the fourth lens group is enlarged and an air interval between the fourth lens group and the fifth lens group is reduced.

摘要翻译： 当从物体观察时，远摄变焦镜头包括：具有正折射力的第一透镜组; 具有负折射力的第二透镜组; 具有正反射功率的第三透镜组; 具有正折射力的第四透镜组; 以及具有负反射能力的第五透镜组，其中当从广角端到远摄端变化时，第一透镜组和第二透镜组之间的空气间隔增大，第二透镜组 并且第三透镜组减小，第三透镜​​组和第四透镜组之间的空气间隔被扩大，并且第四透镜组和第五透镜组之间的空气间隔减小。

公开(公告)号：US4395094A

公开(公告)日：1983-07-26

申请号：US222539

申请日：1981-01-05

申请人： Yoshinari Hamanishi

发明人： Yoshinari Hamanishi

IPC分类号： G02B9/36 ,  G02B9/60 ,  G02B9/62 ,  G02B13/00 ,  G02B27/00 ,  G02B15/14

CPC分类号： G02B13/00 ,  G02B27/0025 ,  G02B9/62

摘要： This specification discloses a large aperture ratio photographic lens with means for correcting aberrations comprising a forward group including at least one negative lens and having a composite positive refractive power, a rearward group also including at least one negative lens and having a composite positive refractive power, and a diaphragm provided between the two groups, characterized in that during the shift from an infinity object photography condition to a short distance object photography condition, focusing is effected by moving both of the two groups toward the object side while enlarging the diaphragm space between the two groups and that the photographic lens satisfies predetermined conditions.

摘要翻译： 本说明书公开了一种具有用于校正像差的装置的大孔径比摄影透镜，该像差包括包括至少一个负透镜并具有复合正折光力的正射组，还包括至少一个负透镜并且具有复合正折光力的后组， 以及设置在两组之间的隔膜，其特征在于，在从无限远物体摄影条件向短距离物体摄影条件的移动期间，通过将两组朝向物体侧移动，同时将 两组，并且摄影透镜满足预定条件。

公开(公告)号：US5257137A

公开(公告)日：1993-10-26

申请号：US855665

申请日：1992-03-23

申请人： Fumio Suzuki ,  Yoshinari Hamanishi

发明人： Fumio Suzuki ,  Yoshinari Hamanishi

IPC分类号： G02B9/64 ,  G02B13/00 ,  G02B9/34 ,  G02B15/14

CPC分类号： G02B13/00

摘要： A lens for an underwater camera is comprised of a first lens unit having no refractive power or having weak refractive power, a second lens unit comprising a forward unit having negative refractive power and a rearward unit having positive refractive power, and having weak refractive power, a third lens unit having positive refractive power, and a fourth lens unit having negative refractive power, the first lens unit being fixed relative to the image plane, the second lens unit and the third lens unit being axially moved together on the optical axis toward the object side relative to the fourth lens unit.

摘要翻译： 一种用于水下摄像机的透镜由不具有屈光力或具有弱屈光力的第一透镜单元组成，第二透镜单元包括具有负屈光力的正射单元和具有正折光力的后向单元，并且具有弱折射力， 具有正折光力的第三透镜单元和具有负屈光力的第四透镜单元，第一透镜单元相对于像面固定，第二透镜单元和第三透镜单元在光轴上一起轴向移动到 物体侧相对于第四透镜单元。

公开(公告)号：US4653871A

公开(公告)日：1987-03-31

申请号：US685300

申请日：1984-12-24

申请人： Yoshinari Hamanishi

发明人： Yoshinari Hamanishi

IPC分类号： G02B15/12 ,  G02B15/08 ,  G02B15/02 ,  G02B9/40 ,  G02B9/60

CPC分类号： G02B15/08

摘要： A rear conversion lens is composed of a front lens group comprising three lenses of positive, negative and positive from the object side and a rear lens group comprising two lenses of negative and positive from the object side and satisfying certain conditions.

摘要翻译： 后转换透镜由从物体侧包括正，负和正的三个透镜的前透镜组构成，并且后透镜组包括从物体侧起的负和正的两个透镜并满足某些条件。

公开(公告)号：US4641928A

公开(公告)日：1987-02-10

申请号：US593924

申请日：1984-03-27

申请人： Yoshinari Hamanishi

发明人： Yoshinari Hamanishi

IPC分类号： G02B15/167 ,  G02B15/173 ,  G02B15/20

CPC分类号： G02B15/173

摘要： A four-group telephoto zoom lens consists of, in succession from the object side, first group having a positive refracting power and movable on the optical axis of the lens for focusing, second group having a negative refracting power and movable on the optical axis for changing a composite focal distance of an entire system, a third group having a positive refracting power and movable on the optical axis for maintaining image plane at a fixed position and a fourth group as relay lens system having a positive refracting power. The second group consists of a first cemented negative lens component having, in the order from the object side, a positive lens and a negative lens cemented together and a second cemented negative lens component having a negative lens and a positive lens cemented together. The four-group telephoto zoom lens further satisfies a certain condition.

摘要翻译： 四组长焦变焦透镜从物体侧连续地构成，第一组具有正折射力并且可在用于聚焦的透镜的光轴上移动，第二组具有负折射光焦度并且可在光轴上移动 改变整个系统的复合焦距，具有正折射率的第三组，并且可以在光轴上移动以将图像平面保持在固定位置;第四组作为具有正折射力的中继透镜系统。 第二组由第一胶合负透镜部件组成，其从物体侧开始，将正透镜和负透镜胶合在一起，以及具有负透镜和正透镜的第二胶合负透镜部件胶合在一起。 四组长焦变焦镜头进一步满足一定条件。

公开(公告)号：US4514051A

公开(公告)日：1985-04-30

申请号：US641361

申请日：1984-08-15

申请人： Yoshinari Hamanishi

发明人： Yoshinari Hamanishi

IPC分类号： G02B15/12 ,  G02B13/02

CPC分类号： G02B15/12

摘要： A rear conversion lens for a single lens reflex camera, constructed with a front lens group including a positive lens with its surface having a greater curvature facing to the image side, a negative biconcave lens, and a positive lens with its surface having a greater curvature facing to the object side, and a rear lens group including a negative lens, the rear conversion lens being provided between an objective lens and a camera body to extend a composite focal length, and satisfying certain conditions.

摘要翻译： 一种用于单透镜反射相机的后转换透镜，其构造为具有正透镜的前透镜组，其正面透镜的表面具有朝向像侧的较大曲率，负双凹透镜和正透镜，其表面具有较大的曲率 面向物体侧的后透镜组和包括负透镜的后透镜组，后转换透镜设置在物镜和照相机主体之间，以延伸复合焦距并满足某些条件。

公开(公告)号：US5231444A

公开(公告)日：1993-07-27

申请号：US804042

申请日：1991-12-09

申请人： Tsuneo Watanabe ,  Yoshiharu Shiokama ,  Yoshinari Hamanishi

发明人： Tsuneo Watanabe ,  Yoshiharu Shiokama ,  Yoshinari Hamanishi

IPC分类号： G02B7/28 ,  G02B15/08 ,  G03B13/36

CPC分类号： G02B15/08

摘要： A camera system and a rear conversion lens both of which accurately calculate the distance .DELTA.X a focusing lens moves when the rear conversion lens is interposed between an interchangeable lens and the camera body, even when the distance .DELTA.Bf an image surface of the focusing lens shifts, increases, so that a subject can be focused quickly.A factor K.sub.0 for converting the distance the image surface of an interchangeable lens shifts and a factor C.sub.0 for correcting the conversion factor K.sub.0 are stored, and the magnification .beta.c and the focal length fc of the rear conversion lens are also stored independently of the above two factors. The distance .DELTA.X is calculated with precision. The subject can thus be automatically focused smoothly and quickly.

摘要翻译： 相机系统和后转换镜头，即使当后转换透镜插入在可互换镜头和照相机主体之间时，也可以精确地计算聚焦透镜移动的距离DELTA X，即使距离DELTA Bf是聚焦透镜的图像表面 转移，增加，从而可以快速集中一个主题。 存储用于转换可互换镜头的图像表面的距离的因子K0和用于校正转换因子K0的因子C0，并且后转换透镜的倍率βc和焦距fc也独立于上述存储 两个因素。 距离DELTA X精确计算。 因此，可以顺利，快速地自动聚焦对象。