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公开(公告)号：US4757372A
公开(公告)日：1988-07-12
申请号：US107139
申请日：1987-10-09
CPC分类号： G03B19/12
摘要： A compact SLR camera embodies a zoom taking lens and a diagonal reflecting member along the axis of the taking lens that diverts the optical ray path coming through the lens element forwardly thereof to a viewing screen. The reflecting member is movable along the axis of the taking lens in coordination with the corresponding zooming movement of an adjacent lens element so that the reflecting member and the lens element occupy the same location during different stages of zooming; thereby eliminating the long back focus dictated by the fixed location of the reflecting member in conventional SLR cameras.
摘要翻译： 紧凑型单反相机将沿着拍摄镜头的轴线的变焦拍摄镜头和对角线反射部件转移到通过透镜元件前进的光线路径到观看屏幕。 与相机透镜元件的相应的变焦运动协调起来，反射构件可以沿着拍摄镜头的轴线移动，使得反射构件和透镜元件在不同的变焦阶段期间占据相同的位置; 从而消除了常规单反相机中反射部件的固定位置所规定的长后焦点。
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公开(公告)号：US5745301A
公开(公告)日：1998-04-28
申请号：US358927
申请日：1994-12-19
IPC分类号： G02B13/18 , G02B13/00 , G02B15/16 , G02B15/177 , G02B15/14
CPC分类号： G02B13/0035 , G02B13/009
摘要： Variable power lens systems for use with electronic imaging systems, e.g., systems employing CCDs, are provided. The systems take advantage of the fact that the images detected by electronic imaging systems are small, e.g., the image diagonal can be 5.5 millimeters or less. The lens systems employ thick lens elements, whose diameters and thicknesses are large relative to the image size, and large air spaces between lens elements. The systems also employ weak lens units. In this way, simplified lens designs having excellent optical properties at less cost are provided. In certain embodiments, the lens systems contain only three lens elements, e.g., a negative first lens element, a positive second lens element for zooming, and a positive third lens element, with the first and/or the third lens element serving as a compensator.
摘要翻译： 提供了用于电子成像系统的可变功率透镜系统，例如采用CCD的系统。 这些系统利用电子成像系统检测到的图像很小的事实，例如，图像对角线可以是5.5毫米或更小。 透镜系统使用相对于图像尺寸的直径和厚度较大的透镜元件以及透镜元件之间的大空间。 该系统还采用弱透镜单元。 以这种方式，提供了以较低成本具有优异光学特性的简化透镜设计。 在某些实施例中，透镜系统仅包含三个透镜元件，例如负的第一透镜元件，用于变焦的正的第二透镜元件和正的第三透镜元件，其中第一和/或第三透镜元件用作补偿器 。
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公开(公告)号：US4828372A
公开(公告)日：1989-05-09
申请号：US161070
申请日：1988-02-26
CPC分类号： G02B15/22
摘要： A compact wide-angle zoom lens with short back focus comprises a forwardmost negative power lens unit movable for focusing and compensation during zooming, followed by a positive power variator lens unit comprising a forward positive power lens sub-unit movable for zooming and a rearward lens sub-unit also movable for zooming.
摘要翻译： 具有短后焦距的紧凑型广角变焦镜头包括可在变焦期间进行聚焦和补偿的可移动的用于聚焦和补偿的最前端的负功率透镜单元，其后是正功率变倍透镜单元，包括可移动以用于变焦的前正功率透镜子单元和后透镜 子单元也可移动以进行变焦。
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公开(公告)号：US4307943A
公开(公告)日：1981-12-29
申请号：US178529
申请日：1980-08-15
CPC分类号： G02B15/22
摘要： A zoom lens having capability of focusing to a magnification of 1:2 through movement of only the front focusing group. The power of the focusing group is chosen in relation to the power of the lens at its long focal length to accomplish close focusing with minimal axial travel while providing good aberration correction.
摘要翻译： 具有仅通过前聚焦组的移动而能够聚焦到1:2的倍率的变焦镜头。 聚焦组的功率相对于其长焦距的透镜的功率来选择，以实现最小轴向行程的紧密聚焦，同时提供良好的像差校正。
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公开(公告)号：USRE35775E
公开(公告)日：1998-04-21
申请号：US904373
申请日：1992-06-25
CPC分类号： G02B15/161
摘要： A two lens unit zoom lens of plus, minus configuration where the rear negative group provides the primary variator function and the positive first lens unit consists of a negative sub-unit and a positive sub-unit and where the sub-units may move differentially during zooming.
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公开(公告)号：US5493448A
公开(公告)日：1996-02-20
申请号：US148811
申请日：1993-11-08
CPC分类号： G02B15/16
摘要： A zoom lens having two groups of lens components including from the object side a positive group and a negative group. The positive group includes two lens units, a weak unit, and a positive unit, while the negative group has at least one negative lens component and provides most of the magnification change during zooming.
摘要翻译： 一种具有两组透镜部件的变焦透镜，包括物体侧的正极组和负极组。 正极组包括两个透镜单元，弱单元和正单元，而负组具有至少一个负透镜组件，并且在变焦期间提供大部分放大变化。
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公开(公告)号：US5315440A
公开(公告)日：1994-05-24
申请号：US792504
申请日：1991-11-04
CPC分类号： G02B15/16
摘要： A zoom lens having two groups of lens components including from the object side a positive group and a negative group. The positive group includes two lens units, a weak unit, and a positive unit, while the negative group has at least one negative lens component and provides most of the magnification change during zooming.
摘要翻译： 一种具有两组透镜部件的变焦透镜，包括物体侧的正极组和负极组。 正极组包括两个透镜单元，弱单元和正单元，而负组具有至少一个负透镜组件，并且在变焦期间提供大部分放大变化。
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公开(公告)号：US4936661A
公开(公告)日：1990-06-26
申请号：US288429
申请日：1988-12-22
IPC分类号： G02B15/16
CPC分类号： G02B15/161
摘要： A two lens unit zoom lens of plus, minus configuration where the rear negative group provides the primary variator function and the positive first lens unit consists of a negative sub-unit and a positive sub-unit and where the sub-units may move differentially during zooming.
摘要翻译： 两个透镜单元变焦透镜，其正负组合，其中后负组提供主变倍器功能，正第一透镜单元由负子单元和正子单元组成，并且其中子单元可以在 放大
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公开(公告)号：US4838668A
公开(公告)日：1989-06-13
申请号：US107223
申请日：1987-10-09
IPC分类号： G02B15/22
CPC分类号： G02B15/22
摘要： A zoom taking lens for a photographic single lens reflex (SLR) camera. The lens has an air space between elements of the lens, which air space is large enough to accommodate reflective means for directing rays which have passed through elements of the lens in front of the reflective means, to viewfinder means. By being able to accommodate the reflective means within the length of the lens and with the reflective means being axially movable the back focal length of the lens may be much smaller than is the case in a conventional SLR camera in which the reflective means is movable into and out of the back focal length between the rearmost element of the lens and the film of the camera.
摘要翻译： 用于单反相机（SLR）的变焦镜头。 透镜在透镜的元件之间具有空气空间，该空间足够大以容纳用于将已经穿过反射装置前面的透镜的元件的光线引导到取景器装置的反射装置。 通过能够在透镜的长度内容纳反射装置，并且反射装置可轴向移动，透镜的后焦距可以比常规单反相机的情况小得多，其中反射装置可移动到 并且在镜头的最后面的元件和相机的胶片之间的后焦距之外。
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10.发明授权Objective lens system, relay lens system, and eyepiece lens system for night-vision goggles 失效物镜系统，中继透镜系统和用于夜视镜的目镜系统
公开(公告)号：US4655562A
公开(公告)日：1987-04-07
申请号：US723117
申请日：1985-04-15
CPC分类号： G02B23/16 , G02B23/125 , G02B25/00
摘要： The goggles include a pair of optical assemblies, each having two intersecting optical paths, including a see-through path with a large field of view on a straight line of sight to the viewed object, and a folded path which includes an objective lens set, an intensifier which converts visible and infrared light to a visible intensified light, and an eyepiece lens set, arranged in a loop in a plane perpendicular to the see-through path. Infrared and visible light from the viewed object enters both paths. A dichroic prism combiner at the intersection of the paths reflects intensified light from the folded path into the see-through path and transmits all other light. In one embodiment a dichroic prism separator is disposed at the intersection of the paths forward of the combiner for transmitting a portion of the incoming visible light along the see-through path and reflecting the remainder of the incoming light to the folded path. In another embodiment, the entrance to the folded path is spaced from the see-through path.
摘要翻译： 护目镜包括一对光学组件，每个光学组件具有两个相交的光路，包括在被观察物体的直视线上具有大的视野的透视路径，以及包括物镜组的折叠路径， 将可见光和红外光转换成可见增强光的增强器，以及目镜透镜组，其在垂直于透视通路的平面中以环形排列。 来自被查看对象的红外线和可见光进入两条路径。 在路径交叉处的二向色棱镜组合器将来自折叠路径的增强光反射到透视路径并透射所有其它光。 在一个实施例中，二向色棱镜分离器设置在组合器之前的路径的相交处，用于沿着穿透路径传送一部分入射的可见光，并将入射光的其余部分反射到折叠路径。 在另一个实施例中，折叠路径的入口与透视路径间隔开。
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