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公开(公告)号：US06373640B1
公开(公告)日：2002-04-16
申请号：US09494320
申请日：2000-01-28
IPC分类号： G02B1514
CPC分类号： G02B26/0816 , G02B15/177 , H04N5/2251 , H04N5/2254
摘要： Optical systems for use in digital cameras are provided. The systems can be switched between three optical paths (1,2,3): a first path (1) for through-the-lens (TTL) viewing; a second path (2) for recalling previously taken pictures from a microdisplay (16); and a third path (3) in which pictures are taken using an electronic sensor (15), e.g., a CMOS sensor. The optical systems employ a zoom objective lens unit (10), e.g., a 3:1 zoom, an erector lens unit (12), and an eye lens unit (13). They can also employ an image size adjusting lens unit (11) for equalizing the TTL and recalled images presented to the user. To facilitate integration with the electronic components of a digital camera and to provide a “book” format for the camera, the first and second optical paths (1,2) lie in a single plane and each includes two folding mirrors (17,20 for the first path; 18,20 for the second path) and the third optical path (3) has a single folding mirror (19) so that a portion of that path is in the single plane and a portion is orthogonal to that plane.
摘要翻译： 提供了用于数码相机的光学系统。 可以在三个光路（1,2,3）之间切换系统：用于透镜（TTL）观看的第一路径（1） 用于从微显示器（16）调用先前拍摄的图像的第二路径（2）; 以及使用例如CMOS传感器的电子传感器（15）拍摄照片的第三路径（3）。 光学系统采用变焦物镜单元（10），例如3：1变焦，竖立镜头单元（12）和眼睛透镜单元（13）。 它们还可以使用图像尺寸调整透镜单元（11）来均衡TTL和呈现给用户的回忆图像。 为了便于与数码相机的电子部件集成并且为相机提供“书”格式，第一和第二光路（1,2）位于单个平面中，并且每个包括两个折叠镜（17,20，用于 第一路径; 18,20，用于第二路径），并且第三光路（3）具有单个折叠镜（19），使得该路径的一部分在单个平面中，并且一部分与该平面正交。
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公开(公告)号：US5313330A
公开(公告)日：1994-05-17
申请号：US938381
申请日：1992-08-31
申请人： Ellis I. Betensky
发明人： Ellis I. Betensky
CPC分类号： G02B15/177 , G02B15/161
摘要： Zoom projection lens systems are provided which have 1) an entrance pupil which remains at a substantially fixed position as zooming takes place, and 2) a operative aperture stop, distinct from the system's physical aperture stop, which moves through lens surfaces as zooming takes place. The fixed entrance pupil allows for efficient coupling to a light source throughout the magnification range of the system. Methods which can be used to design and produce zoom lens systems of this type and which employ a pseudo-aperture stop are also disclosed.
摘要翻译： 提供变焦投影透镜系统，其具有1）入射光瞳，其在发生变焦时保持在基本固定的位置，以及2）与系统的物理光阑不同的操作孔径光阑，其随着变焦而移动通过透镜表面 。 固定入射光瞳允许在系统的整个放大范围内有效地耦合到光源。 还公开了可用于设计和生产这种类型的变焦透镜系统并采用伪孔径光阑的方法。
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公开(公告)号：US4991943A
公开(公告)日：1991-02-12
申请号：US329283
申请日：1989-03-27
申请人： Ellis I. Betensky
发明人： Ellis I. Betensky
IPC分类号： G02B15/173
CPC分类号： G02B15/173
摘要： A compact high zoom ratio lens comprising from the object end a front positive stationary lens unit, a negative variating lens unit, a positive variating lens unit and a compensate lens unit, the variating lens units and the compensator lens unit being axially moveable to vary the equivalent focal length of said lens, the compensator group having an object magnification change of less than twenty-five percent over the zoom range of the lens.
摘要翻译： 一种紧凑的高变焦倍率透镜，包括从目标端起的正面正透镜单元，负变量透镜单元，正变倍透镜单元和补偿透镜单元，变化透镜单元和补偿透镜单元可轴向移动以改变 所述透镜的等效焦距，所述补偿组在所述透镜的变焦范围内的物体倍率变化小于百分之二十五。
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公开(公告)号：US4697892A
公开(公告)日：1987-10-06
申请号：US642825
申请日：1984-08-21
申请人： Ellis I. Betensky
发明人： Ellis I. Betensky
摘要： A projection lens for a cathode ray tube display which comprises from the image end, a first group of relatively weak optical power serving primarily to correct aperture dependent aberrations, a second group of strong positive power, and a third negative group having a strongly concave image side surface and which serves as a field flattener and to correct the Petzval curvature of the services of the elements of the other groups. The second group comprises two elements which provide substantially all of the positive power of the lens and which define an air meniscus therebetween with the minor dimension at the optical axis. The optical powers of the second group bear a predetermined ratio and have a minor dimension at the optical axis.
摘要翻译： 一种用于阴极射线管显示器的投影透镜，包括从图像端，主要用于校正孔径相关像差的第一组相对较弱的光学功率，强正功率的第二组和具有强凹图像的第三负组 并且其用作场平压器并且校正其他组的元件的服务的Petzval曲率。 第二组包括两个元件，其提供透镜的基本上所有的正功率，并且在光轴处具有小的尺寸，在其间限定空气弯月面。 第二组的光焦度具有预定比例并且在光轴处具有小尺寸。
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公开(公告)号：US4466708A
公开(公告)日：1984-08-21
申请号：US423735
申请日：1982-09-28
申请人： Ellis I. Betensky
发明人： Ellis I. Betensky
摘要： A zoom lens which will continuous close focus to a magnification of 1:4, comprising three groups where the third group from the object end is stationary, the second group moves axially to vary the equivalent focal length, and the first group moves axially in predetermined relation to the second group to compensate for the variation in focal length, and is also independently movable axially to focus the lens.
摘要翻译： 将变焦镜头连续近距离聚焦至1：4的放大倍率，包括三组，其中第三组从物体端静止，第二组轴向移动以改变等效焦距，第一组轴向移动预定 与第二组的关系以补偿焦距的变化，并且还可以轴向独立地移动以聚焦透镜。
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公开(公告)号：US4394072A
公开(公告)日：1983-07-19
申请号：US213611
申请日：1980-12-05
申请人： Ellis I. Betensky
发明人： Ellis I. Betensky
IPC分类号： G02B15/167 , G02B15/22 , G02B15/18
CPC分类号： G02B15/22
摘要： A new and improved zoom lens comprises four groups. The powers of the groups from the object end to the image end are positive, negative, negative, and positive, respectively. The first group is stationery for zooming but moves for close focusing. The second and third groups move in the same direction for zooming.
摘要翻译： 新的改进的变焦镜头包括四组。 从对象结束到图像结束的组的权力分别为正，负，负和正。 第一组是用于缩放的文具，但移动以进行紧密聚焦。 第二组和第三组在相同的方向移动以进行缩放。
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公开(公告)号：US4300817A
公开(公告)日：1981-11-17
申请号：US70748
申请日：1979-09-05
申请人： Ellis I. Betensky
发明人： Ellis I. Betensky
摘要： A projection lens for cathode ray tube display comprising from the image end an element of relatively weak optical power a bi-convex element of positive power providing substantially all the positive power of the overall lens and a third group comprising a negative element having a concave image side surface serving as a field flattener.
摘要翻译： 一种用于阴极射线管显示器的投影透镜，其特征在于，从所述图像端部构成具有相对较弱的光焦度的元件，具有提供整个透镜的基本上所有正光焦度的正光焦度的双凸元件，以及包括具有凹形图像的负像素的第三组 侧面作为场平整器。
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公开(公告)号：US4015902A
公开(公告)日：1977-04-05
申请号：US627779
申请日：1975-10-31
申请人： Ellis I. Betensky
发明人： Ellis I. Betensky
CPC分类号： G03B27/545
摘要： In a continuous path enlarger having an illumination system for illuminating a very wide continuously moving original and projecting the image thereof onto a much wider sheet of light sensitive recording material moving synchronously with the original, the improvement wherein the illumination system includes a plurality of identical abutting, illumination sources each having a light source and a lens system with the final lens thereof being in the shape of a parallelogram having straight side edges in contact with the adjacent side edges of each adjacent final lens, and with the side edges being at an acute angle to the direction of travel of the recording sheet. Further, the plurality of image areas on the recording sheet preferably overlap each other. Thus, the total amount of light received at any point on the recording sheet passing through an angled edge of one of the plurality of image areas integrates across the width of the exposure area and is sufficient to effect proper exposure of the recording material so that uniformity is achieved over the field of exposure.
摘要翻译： 在具有用于照亮非常宽的连续移动的原稿并将其图像投射到与原稿同步移动的更宽的光敏记录材料片上的照明系统的连续路径放大器中，其中照明系统包括多个相同的邻接 每个具有光源的照明源和透镜系统，其最终透镜为具有与每个相邻最终透镜的相邻侧边缘接触的直边侧边缘的平行四边形的形状，并且侧边缘处于锐度 与记录纸的行进方向成角度。 此外，记录片材上的多个图像区域优选地彼此重叠。 因此，在通过多个图像区域之一的成角度的边缘的记录片材上的任何点处接收的光的总量在曝光区域的宽度上积分，并且足以实现记录材料的适当曝光，使得均匀性 是在曝光领域实现的。
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公开(公告)号：US3961844A
公开(公告)日：1976-06-08
申请号：US460342
申请日：1974-04-12
申请人： Ellis I. Betensky
发明人： Ellis I. Betensky
CPC分类号： G02B9/34
摘要： A lens for a small film format still camera which comprises four lens elements disposed behind the aperture defining means, and includes a double convex convergent lens element, a second double concave divergent lens element, a third double convex convergent element, and a fourth concave-plano lens element.
摘要翻译： 一种用于小胶片格式静止照相机的透镜，其包括设置在孔限定装置后面的四个透镜元件，并且包括双凸会聚透镜元件，第二双凹发散透镜元件，第三双凸收敛元件和第四凹凸收敛元件， 平面透镜元件
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公开(公告)号：US5532875A
公开(公告)日：1996-07-02
申请号：US336424
申请日：1994-11-09
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 and where R.sub.ex and the constants 1.5 and 13 are measured in millimeters. 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来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是双筒望远镜出射光瞳的半径，其中Rex和常数1.5和13以毫米为单位测量。 由于S / D比的增加，本发明的双筒望远镜最小化通常在使用双筒望远镜时通常发生的隧道视觉的感觉，并且减少了用户对他或她的周边视觉中的缺失活动的担心。 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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