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公开(公告)号：US06961188B2
公开(公告)日：2005-11-01
申请号：US10622914
申请日：2003-07-18
IPC分类号： G02B15/14 , G02B15/16 , G02B15/173 , G02B27/64 , G02C15/14
CPC分类号： G02B15/12 , G02B13/14 , G02B15/161 , G02B15/173 , G02B27/646
摘要： A zoom lens system is disclosed. The zoom lens system forms a final image of an object and a first intermediate real image between the object and the final image. The zoom lens system includes a first optical unit located between the object and the first intermediate real image. The first optical unit comprises at least one optical subunit which is moved to change the size (magnification) of the first intermediate real image. The zoom lens system also includes a second optical unit located between the first intermediate real image and the final image, at least a portion of which is moved to change the size (magnification) of the final image. The zoom lens system provides a wide zoom range of focal lengths with continuous zooming between the focal lengths and optional image stabilization.
摘要翻译： 公开了一种变焦透镜系统。 变焦透镜系统在物体和最终图像之间形成物体的最终图像和第一中间真实图像。 变焦透镜系统包括位于物体和第一中间真实图像之间的第一光学单元。 第一光学单元包括至少一个光学子单元，其被移动以改变第一中间实际图像的尺寸（放大率）。 变焦透镜系统还包括位于第一中间真实图像和最终图像之间的第二光学单元，其中至少一部分被移动以改变最终图像的尺寸（放大率）。 变焦镜头系统提供了焦距的宽变焦范围，可以在焦距和可选图像稳定之间进行连续变焦。
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公开(公告)号：US6122111A
公开(公告)日：2000-09-19
申请号：US44521
申请日：1998-03-19
申请人： Iain A. Neil , Ellis I. Betensky
发明人： Iain A. Neil , Ellis I. Betensky
IPC分类号： G02B15/20 , G02B15/177 , G02B15/14
CPC分类号： G02B15/177
摘要： A high performance zoom lens system formed by multiple focus lens groups, multiple zoom lens groups and single auxiliary lens group aligned in that order on a common optical axis and arranged to collect radiation emanating from an object space and deliver that radiation to an axially stationary real image in an image space, such as on a film plane or video CCD. The multiple focus lens groups comprise a first focus lens group of negative optical power that is axially movable and contains at least one non-spherical, non-plano, optically refractive surface, and a second focus lens group of positive optical power that is axially movable. The multiple zoom lens groups comprise a first zoom lens group of negative optical power that is axially movable, and a second zoom lens group of positive optical power that is axially movable and contains an optical stop or iris. The single auxiliary lens group is of relatively weak positive optical power compared to the other lens groups, is axially stationary and contains at least one non-spherical, non-plano optically refractive surface. The remaining optically refractive surfaces of said zoom lens system being substantially spherical or plano. By axial positioning of said multiple focus lens groups and said multiple zoom lens groups, the zoom lens system provides a high level of optical performance at said real image through its entire and substantial focusing and zooming ranges.
摘要翻译： 由多个聚焦透镜组，多个变焦透镜组和单个辅助透镜组组成的高性能变焦透镜系统，其在该公共光轴上按顺序排列并被布置成收集从对象空间发出的辐射并将该辐射传递到轴向平稳的实际 图像空间中的图像，例如在电影平面或视频CCD上。 多焦点透镜组包括可以轴向移动并且包含至少一个非球面，非平面光学折射表面的负光焦度的第一聚焦透镜组和可以轴向移动的正光焦度的第二聚焦透镜组 。 多个变焦透镜组包括可轴向移动的负光焦度的第一变焦透镜组和可轴向移动并且包含光学停止或虹膜的正光焦度的第二变焦透镜组。 单个辅助透镜组与其他透镜组相比具有相对较弱的正光焦度，其轴向静止并且包含至少一个非球面的非平面光学折射表面。 所述变焦透镜系统的剩余的光学折射表面基本上是球形或平面的。 通过所述多个聚焦透镜组和所述多个变焦透镜组的轴向定位，变焦透镜系统通过其整个和实质的聚焦和变焦范围在所述真实图像处提供高水平的光学性能。
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公开(公告)号：US5576888A
公开(公告)日：1996-11-19
申请号：US566321
申请日：1995-12-01
申请人： Ellis I. Betensky
发明人： Ellis I. Betensky
摘要： Binoculars designed to provide a large aided static field of view are provided. The binoculars are characterized by S/D ratios of above 2.8, where S is the binoculars' aided static field of view calculated by multiplying the binoculars' magnifying power by the binoculars' semi field of view in object space and D is given by tan.sup.-1 [(R.sub.ex +1.5)/13], where R.sub.ex is the radius of the binoculars exit pupil the following expression in which R.sub.ex and the constants 1.5 and 13 are in milliliters. As a result of the increased S/D ratio, the binoculars of the invention minimize the sensation of tunnel vision which normally occurs when binoculars are used and reduce the user's apprehension of missing activities in his or her peripheral vision. In certain embodiments, a movable field lens unit is employed to provide variable power and a negative corrector lens unit is employed for aberration correction and to minimize the size of the binoculars. The binoculars are suitable for mass production and general consumer use.
摘要翻译： 提供了旨在提供大的辅助静态视场的双筒望远镜。 双筒望远镜的特征在于2.8以上的S / D比，其中S是通过将双筒望远镜的放大倍数乘以物镜空间中的双筒望远镜的半视场而计算的双筒望远镜的辅助静态视场，D由tan- 1 [（Rex + 1.5）/ 13]，其中Rex是双目镜出射光瞳的半径，其中Rex和常数1.5和13以毫升为单位。 由于S / D比的增加，本发明的双筒望远镜使通常在使用双筒望远镜时发生的隧道视觉的感觉最小化，并且减少了用户对他或她的周边视觉中缺少的活动的担心。 在某些实施例中，采用可动场透镜单元来提供可变功率，并且使用负校正透镜单元进行像差校正并且使双筒望远镜的尺寸最小化。 双筒望远镜适用于批量生产和一般消费者使用。
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公开(公告)号：US4801196A
公开(公告)日：1989-01-31
申请号：US776140
申请日：1985-09-13
申请人： Ellis I. Betensky
发明人： Ellis I. Betensky
摘要： A wide angle projection lens which comprises from the image end a first lens unit of negative power having at least one aspheric surface, a second positive lens unit comprising at least two elements and a third negative element having an aspheric concave to the image, where the first lens unit provides negative power to the overall lens and serves as an aberration corrector including some field curvature.
摘要翻译： 一种广角投影透镜，其从图像端部包括具有至少一个非球面的负光焦度的第一透镜单元，包括至少两个元件的第二正透镜单元和对图像具有非球面凹面的第三负像元， 第一透镜单元向整个透镜提供负电力，并且用作包括一些场曲率的像差校正器。
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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：US4427883A
公开(公告)日：1984-01-24
申请号：US267632
申请日：1981-05-27
CPC分类号： G01B3/1061 , G01D5/34715 , G01B2003/1069
摘要： The present invention relates to coilable extensible rules or the like. More specifically, the present invention is concerned with a new and improved optical sensing system for extensible tape rules of the type that provide a visual display of the measurment readings, such as the digital tape rule described in the Hildebrandt et al U.S. Pat. No. 4,161,781, the disclosure of which is incorporated herein by reference.
摘要翻译： 本发明涉及可卷绕的可扩展规则等。 更具体地说，本发明涉及一种用于可提供测量读数的视觉显示类型的可扩展磁带规则的新的和改进的光学感测系统，例如Hildebrandt等人的美国专利中描述的数字磁带规则。 第4,161,781号，其公开内容通过引用并入本文。
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公开(公告)号：US4348081A
公开(公告)日：1982-09-07
申请号：US228012
申请日：1981-01-28
申请人： Ellis I. Betensky
发明人： Ellis I. Betensky
摘要： A projection lens for a cathode ray tube comprises three groups. The overall positive power of the lens is provided by the first and second groups. The third group of negative power primarily corrects for Petzval curvature. In one form, the second group comprises a bi-convex element and a positive element. In preferred forms some of the lens surfaces are aspheric.
摘要翻译： 用于阴极射线管的投影透镜包括三组。 透镜的总正功率由第一组和第二组提供。 第三组负功率主要纠正Petzval曲率。 在一种形式中，第二组包括双凸元件和正元件。 在优选形式中，一些透镜表面是非球面的。
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公开(公告)号：US4159165A
公开(公告)日：1979-06-26
申请号：US750829
申请日：1976-12-15
申请人： Ellis I. Betensky , John A. Lawson
发明人： Ellis I. Betensky , John A. Lawson
CPC分类号： G02B15/161
摘要： A zoom lens having a wide field angle and two movable groupings to vary the equivalent focal length, the front grouping comprising a front positive group, a negative group comprising a plurality of negative elements, and a rear positive group. In zooming the rear grouping moves forward to increase the equivalent focal length while the front grouping moves backward to maintain the image plane. The front grouping is independently movable for focusing.
摘要翻译： 具有宽视角的变焦透镜和两个可移动分组以改变等效焦距，前分组包括正正组，包括多个负像元的负组和后正组。 在缩放时，后分组向前移动以增加等效焦距，而前分组向后移动以维持图像平面。 前组可独立移动，用于对焦。
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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：US5677797A
公开(公告)日：1997-10-14
申请号：US192328
申请日：1994-02-04
申请人： Ellis I. Betensky
发明人： Ellis I. Betensky
CPC分类号： G02B13/18 , G02B27/0025 , G02B27/0172 , G02B2027/011
摘要： A method for producing a lens system is provided in which an exact field curvature (EFC) value is determined for at least one principal ray, the EFC value being given by: EFC=-.SIGMA.(n'-n)c/nn' the summation being taken over the surfaces of the system, and for each of the surfaces, n is the index of refraction on the object side of the surface, n' is the index of refraction on the image side of the surface, and c is the curvature of the surface at the intersection of the surface with the principal ray, c being positive if the center of curvature is on the image side of the surface.
摘要翻译： 提供一种用于制造透镜系统的方法，其中为至少一个主光线确定精确的场曲率（EFC）值，EFC值由下式给出：EFC = -SEGMA（n'-n）c / nn'the 并且对于每个表面，n是表面的物体侧的折射率，n'是表面的像侧上的折射率，c是 表面与主光线的交点处的曲面曲率，如果曲率中心在表面的像侧，则为正。
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