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公开(公告)号：US4711534A
公开(公告)日：1987-12-08
申请号：US705567
申请日：1985-02-26
申请人： Takashi Matsushita , Sadatoshi Takahashi , Keiji Ikemori , Nozomu Kitagishi , Tsunefumi Tanaka , Kikuo Momiyama
发明人： Takashi Matsushita , Sadatoshi Takahashi , Keiji Ikemori , Nozomu Kitagishi , Tsunefumi Tanaka , Kikuo Momiyama
IPC分类号： G02B15/16 , G02B15/177 , G02B7/04
CPC分类号： G02B15/177
摘要： A zoom lens including, from front to rear, a first lens unit of negative power and a second lens unit of positive power with the separation therebetween being varied to effect zooming. The first lens unit is moved to effect focusing, wherein with the first lens unit focusing a finite object distance on the wide angle side, the second lens unit moves rearward to obtain focal lengths beyond the zooming range.
摘要翻译： 包括从前到后的具有负功率的第一透镜单元和正功率的第二透镜单元与其间的分离的变焦透镜是变化的，以实现变焦。 移动第一透镜单元以实现聚焦，其中，当第一透镜单元在广角侧聚焦有限物体距离时，第二透镜单元向后移动以获得超出变焦范围的焦距。
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2.发明授权Zoom lens capable of obtaining focal lengths beyond a variable focal length range 失效变焦镜头能够获得超过可变焦距范围的焦距
公开(公告)号：US4830477A
公开(公告)日：1989-05-16
申请号：US724280
申请日：1985-04-17
申请人： Sadatoshi Takahashi , Keiji Ikemori , Nozomu Kitagishi , Tsunefumi Tanaka , Takashi Matsushita , Kikuo Momiyama
发明人： Sadatoshi Takahashi , Keiji Ikemori , Nozomu Kitagishi , Tsunefumi Tanaka , Takashi Matsushita , Kikuo Momiyama
IPC分类号： G02B15/02 , G02B15/173 , G02B15/20
CPC分类号： G02B15/173
摘要： A zoom lens comprising, from front to rear, a first zoom section and a second zoom section, the first zoom section having a plurality of movable lens units which simultaneously move to effect zooming, and the second zoom section having a plurality of axially movable lens units, the light beam exiting from the rearmost unit in the first section enters directly the frontmost unit in the second section, and the refractive powers of the front and rear lens units are made positive and negative respectively, whereby the front and rear lens units are simultaneously moved in such a way that the magnifying power of the rear lens unit remains positive when the focal length of the entire system varies.
摘要翻译： 一种变焦透镜，包括从前到后的第一变焦部分和第二变焦部分，所述第一变焦部分具有同时移动以实现变焦的多个可移动透镜单元，并且所述第二变焦部分具有多个可轴向移动的透镜 在第一部分中从最后面单元排出的光束直接进入第二部分中的最前面的单元，并且前后透镜单元的折射力分别为正负透镜单元， 同时移动，使得当整个系统的焦距变化时，后透镜单元的放大倍率保持为正。
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公开(公告)号：US4639096A
公开(公告)日：1987-01-27
申请号：US657762
申请日：1984-10-04
IPC分类号： G02B15/20 , G02B15/173 , G02B15/14
CPC分类号： G02B15/173
摘要： The disclosed zoom lens is composed of four lens groups. Counting from the front, the first lens group has a positive power, the second a negative power, the third a positive power and the fourth a positive or a negative power. At least the first, third and fourth lens groups are movable for zooming. The zoom lens satisfies the following conditions:-3
摘要翻译： 所公开的变焦镜头由四个透镜组组成。 从前面算起，第一透镜组具有正功率，第二透镜组为负功率，第三为正功率，第四为正功率或负功率。 至少第一，第三和第四透镜组可移动以进行变焦。 变焦透镜满足以下条件：-3 <β3w <-0.8 -0.35
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公开(公告)号：US4629294A
公开(公告)日：1986-12-16
申请号：US622713
申请日：1984-06-20
IPC分类号： G02B15/20 , G02B15/173 , G02B15/14
CPC分类号： G02B15/173
摘要： A zoom lens includes, from front to rear, a positive first component, a negative second component, a positive third component and a positive or negative fourth component. The first, third and fourth components are movable to vary the focal length of the entire system. In the wide angle position, the image modification of the third component contributes to the ratio of the focal length of the third component to the focal length of the fourth component, and the ratio of that fraction of the zoom ration of the entire system which the second component assumes to the zoom ratio of the entire system, satisfies specific conditions such that minimization of the bulk and size of the zoom lens and a stabilized correction of aberrations are achieved.
摘要翻译： 变焦透镜从前到后包括正的第一分量，负的第二分量，正的第三分量和正或负的第四分量。 第一，第三和第四组件可移动以改变整个系统的焦距。 在广角位置，第三分量的图像修正有助于第三分量的焦距与第四分量的焦距的比率，以及整个系统的变焦比率的比率 第二分量假定为整个系统的变焦比，满足特定条件，使得实现变焦透镜的体积和尺寸的最小化以及稳定的像差校正。
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公开(公告)号：US4695133A
公开(公告)日：1987-09-22
申请号：US717376
申请日：1985-03-29
IPC分类号： G02B15/20 , G02B15/173 , G02B15/16
CPC分类号： G02B15/173
摘要： The disclosed zoom lens includes, 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 a fourth lens unit. When zooming, the first and third lens units are axially moved independently of each other, the second lens unit remains stationary, and the fourth lens unit is axially moved but changes the direction of advance at an intermediate point in the zooming range.
摘要翻译： 所公开的变焦镜头包括从前到后的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和第四透镜单元。 当变焦时，第一透镜单元和第三透镜单元彼此独立地轴向移动，第二透镜单元保持静止，并且第四透镜单元轴向移动，但是在变焦范围的中间点改变前进方向。
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公开(公告)号：US4666257A
公开(公告)日：1987-05-19
申请号：US705565
申请日：1985-02-26
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。
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公开(公告)号：US4723142A
公开(公告)日：1988-02-02
申请号：US926808
申请日：1986-10-30
申请人： Kikuo Momiyama , Kazuo Fujibayashi , Keiji Ohtaka
发明人： Kikuo Momiyama , Kazuo Fujibayashi , Keiji Ohtaka
CPC分类号： G02B7/32
摘要： The disclosed device prevents degradation of distance measurement accuracy due to alignment error in the mounting of a detachable lens barrel on a camera body. The lens barrel houses a focusing objective lens and a first distance measurement position is set along the optical path of the objective lens within the lens barrel. A second distance measuring position is set within the camera body. A light projector is positioned at one of the distance measuring positions and projects a measuring beam, and a photo detector is positioned at the other of the distance measuring positions to receive a reflection beam from the object being measured to produce a signal to be used for focus adjustment.
摘要翻译： 所公开的装置防止由于在相机机体上安装可拆卸镜筒而导致对准误差导致的距离测量精度的劣化。 透镜镜筒容纳聚焦物镜，沿镜片镜筒内的物镜的光路设置第一距离测量位置。 在相机机身内设置第二测距位置。 光投射器位于距离测量位置中的一个位置并且投射测量光束，并且光电检测器位于距离测量位置的另一个处，以接收来自被测量物体的反射光束，以产生用于 焦点调整。
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公开(公告)号：US4664485A
公开(公告)日：1987-05-12
申请号：US375302
申请日：1982-05-05
申请人： Kikuo Momiyama , Hiromi Someya
发明人： Kikuo Momiyama , Hiromi Someya
CPC分类号： G02B23/14 , G02B25/001
摘要： An eye-piece constituting part of a finder optical system in a camera is constructed from three lens components, one of which is made axially movable to effect adjusting diopter, wherein the refractive powers and forms of all the components are so properly chosen as to maintain good stability of aberration correction throughout the adjusting diopter range.
摘要翻译： 构成相机中的取景器光学系统的一部分的眼镜由三个透镜部件构成，其中一个镜片部件被制成轴向可移动以实现调节屈光度，其中所有部件的屈光力和形式被如此适当选择以保持 调整屈光度范围内的像差校正稳定性好。
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公开(公告)号：US4188092A
公开(公告)日：1980-02-12
申请号：US892422
申请日：1978-03-31
申请人： Kikuo Momiyama
发明人： Kikuo Momiyama
CPC分类号： G02B13/04
摘要： A retrofocus type lens having an angle of view at least 75.degree. and F number 1:2.0. The lens includes a first lens group of a divergent type, a second lens group of a convergent type and a third lens group of a convergent type. The first lens group includes in the order stated a positive meniscus lens, a negative meniscus lens, a positive meniscus lens and a negative meniscus lens. The second lens group includes a positive lens which is either a single lens or consists of a positive lens and a negative lens cemented to each other and with a front convex face directed toward an object to be photographed. The third lens group includes a positive lens having a rear convex face directed toward an image of the object, a biconcave lens with its front surface radius smaller than its rear surface radius, a positive meniscus lens with a convex surface facing the image and a positive lens. The biconcave lens and the positive meniscus lens are respectively replaceable with cemented doublet lenses. The lens system is characterized in that the first lens group includes meniscus lenses arranged in the order of positive, negative, positive and negative lenses, and particularly in that the third positive meniscus lens serves effectively to correct chromatic distortion aberration and chromatic coma aberration.
摘要翻译： 具有至少75°角和F数1：2.0视角的复焦型透镜。 透镜包括发散型的第一透镜组，会聚型的第二透镜组和会聚型的第三透镜组。 第一透镜组按顺序包括正弯月透镜，负弯月透镜，正弯月透镜和负弯月形透镜。 第二透镜组包括正透镜，其是单透镜，或由正透镜和负透镜彼此粘合，并且具有朝向待拍摄对象的前凸面。 第三透镜组包括具有朝向物体的图像的后凸面的正透镜，其前表面半径小于其后表面半径的双凹透镜，具有面向图像的凸面的正弯月透镜和正 镜片。 双凹透镜和正弯月透镜分别可以用胶合双面透镜替代。 透镜系统的特征在于，第一透镜组包括以正，负，正和负透镜的顺序布置的弯月透镜，特别是第三正弯月透镜有效地校正色失真像差和色差彗差。
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公开(公告)号：US3999840A
公开(公告)日：1976-12-28
申请号：US488733
申请日：1974-07-15
申请人： Kikuo Momiyama
发明人： Kikuo Momiyama
摘要： A retrofocus wide angle objective with the backfocal length being at least two times the overall focal length, comprising in optical alignment, a plurality of negative meniscus lenses of forward convexities, a positive lens, a negative meniscus lens of forward convexity, a bi-convex lens, a negative lens, a positive doublet lens and a positive lens, and the first surface counting from the front being configured in a non-spherical form such that the curvature increases with distance from the optical axis. This non-spherical surface compensates for barrel distortion and negative coma which are introduced by the object-side negative meniscus lenses into the lens system.
摘要翻译： 一种反向焦点广角目标，其背焦长度至少为整个焦距的两倍，包括光学对准，多个正向凸起的负弯月透镜，正透镜，前凸的负弯月形透镜，双凸起 透镜，负透镜，正双透镜和正透镜，并且从前面计数的第一表面被配置为非球形，使得曲率随着距离光轴的距离而增加。 该非球面补偿由物体侧负弯月形透镜引入透镜系统的桶形失真和负彗差。
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