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公开(公告)号：US07418199B2
公开(公告)日：2008-08-26
申请号：US11177277
申请日：2005-07-11
CPC分类号： G03B17/00
摘要： An imaging apparatus including a first lens unit with positive power in which the most object-side surface is concave and the most image-side surface is convex, an aperture stop, a second lens unit with positive power in which the most object-side surface is convex and the most image-side surface is concave, and a third lens unit with positive power; and an image sensor. Air spacing between the second lens unit and the third lens unit assumes the shape of a biconvex air lens. The imaging apparatus satisfies the following condition: 1.4≦|r 2R|/IH≦15.0 where IH is the maximum photographic image height, which is a half of the diagonal length, in an effective imaging area, of the image sensor, and r 2R is the radius of curvature, measured along the optical axis, of the most image-side surface of the second lens unit.
摘要翻译： 一种成像装置，包括具有正电力的第一透镜单元，其中最物体侧表面是凹形的并且最像图像侧表面是凸形的;孔径光阑;具有正光焦度的第二透镜单元，其中最物体侧表面 是凸的，并且最大的图像侧表面是凹的，以及具有正功率的第三透镜单元; 和图像传感器。 第二透镜单元和第三透镜单元之间的空气间隔呈双凸透镜的形状。 成像装置满足以下条件：<？in-line-formula description =“In-line formula”end =“lead”？> 1.4 <= | R2R | / IH <= 15.0 <？in-line-formula description = “直线公式”end =“tail”？>其中IH是图像传感器的有效成像区域中最大摄影图像高度，它是对角线长度的一半，r 2R是曲率半径 ，沿着光轴测量第二透镜单元的最大像侧表面。
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公开(公告)号：US20060024038A1
公开(公告)日：2006-02-02
申请号：US11177277
申请日：2005-07-11
IPC分类号： G03B17/00
CPC分类号： G03B17/00
摘要： An imaging apparatus has a photographing optical system including, in order form the object side, a first lens unit with positive power in which the most object-side surface is concave and the most image-side surface is convex, an aperture stop, a second lens unit with positive power in which the most object-side surface is convex and the most image-side surface is concave, and a third lens unit with positive power; and an image sensor converting an optical image formed by the photographing optical system into an electric signal. Air spacing between the second lens unit and the third lens unit assumes the shape of a biconvex air lens. The imaging apparatus satisfies the following condition: 1.4≦|r2R/IH≦15.0 where IH is the maximum photographic image height, which is a half of the diagonal length, in an effective imaging area, of the image sensor, and r 2R is the radius of curvature, measured along the optical axis, of the most image-side surface of the second lens unit.
摘要翻译： 一种成像装置具有拍摄光学系统，其中依次形成物体侧，具有最大物体侧表面为凹面且最多像侧表面为凸的正光焦度的第一透镜单元，孔径光阑，第二透镜单元 具有最大物体侧表面是凸的并且最多的图像侧表面是凹的正电力的透镜单元和具有正功率的第三透镜单元; 以及将由拍摄光学系统形成的光学图像转换为电信号的图像传感器。 第二透镜单元和第三透镜单元之间的空气间隔呈双凸透镜的形状。 成像装置满足以下条件：<？in-line-formula description =“In-line Formulas”end =“lead”？> 1.4 <= | r2R / IH <= 15.0 <？in-line-formula description =“ 其中IH是图像传感器的有效成像区域中的对角线长度的一半的最大摄影图像高度，r 2R是曲率半径， 沿着光轴测量第二透镜单元的最大像侧表面。
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公开(公告)号：US20090257131A1
公开(公告)日：2009-10-15
申请号：US12384976
申请日：2009-04-09
IPC分类号： G02B15/177
CPC分类号： G02B15/177
摘要： An apparatus has a zoom lens and an image pickup element disposed on the image side of the zoom lens that converts an optical image formed by the zoom lens into an electrical signal. The zoom lens includes, in order from the object side to the image side, a negative first lens unit, a negative second lens unit, a positive third lens unit, and a negative fourth lens unit. During zooming from the wide angle end to the telephoto end, the distance between the first lens unit and the second lens unit changes, the distance between the second lens unit and the third lens unit changes, and the distance between the third lens unit and the fourth lens unit changes, the distance between the second lens unit and the third lens unit being smaller at the telephoto end than at the wide angle end. The first lens unit includes a reflecting surface that deflects the optical path, and the zoom lens satisfies the following condition (1): −100
摘要翻译： 设备具有变焦透镜和设置在变焦透镜的像侧上的图像拾取元件，其将由变焦透镜形成的光学图像转换为电信号。 变焦透镜从物体侧到像侧依次包括负的第一透镜单元，负的第二透镜单元，正的第三透镜单元和负的第四透镜单元。 在从广角端到远摄端的变焦期间，第一透镜单元和第二透镜单元之间的距离改变，第二透镜单元和第三透镜单元之间的距离改变，并且第三透镜单元与第三透镜单元之间的距离 第四透镜单元改变，第二透镜单元和第三透镜单元之间的距离在望远端比在广角端处更小。 第一透镜单元包括使光路偏转的反射面，变焦透镜满足以下条件（1）：-100
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公开(公告)号：US5793532A
公开(公告)日：1998-08-11
申请号：US521067
申请日：1995-08-29
申请人： Kazuteru Kawamura
发明人： Kazuteru Kawamura
IPC分类号： G02B13/18 , G02B15/177 , G02B15/20 , G02B15/14 , G02B3/02
CPC分类号： G02B15/177
摘要： The invention provides a high-performance wide-angle zoom lens system which has a zoom ratio of 2 or more and an angle of view of 65.degree. or more at the wide-angle end and comprises a reduced number of lenses, and so is favorable for reducing the size, weight, and cost of a camera used therewith. This zoom lens system comprises a first lens group G1 of negative power, a second lens group G2, a third lens group G3 of positive power and a fourth lens group G4 of negative power, with the space between the respective lens groups being varied for zooming. The first lens group G1 consists of a negative lens alone, the second and third lens groups G2 and G3 include one independent negative lens and two positive lenses in all, and the fourth lens group G4 comprises one negative lens or alternatively two lenses, positive and negative.
摘要翻译： 本发明提供了一种高广角变焦透镜系统，其在广角端具有2倍以上的变焦倍率和65度以上的视角，并且包括减少数量的透镜，因此有利 用于减小与其一起使用的相机的尺寸，重量和成本。 该变焦透镜系统包括负功率的第一透镜组G1，第二透镜组G2，正光焦度的第三透镜组G3和负功率的第四透镜组G4，各透镜组之间的空间变化以变焦 。 第一透镜组G1由单独的负透镜组成，第二透镜组G2和第三透镜组G3全部包括一个独立的负透镜和两个正透镜，第四透镜组G4包括一个负透镜或两个透镜，其为正和 负。
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公开(公告)号：US5459616A
公开(公告)日：1995-10-17
申请号：US19286
申请日：1993-02-18
申请人： Kazuteru Kawamura , Yasuji Ogata
发明人： Kazuteru Kawamura , Yasuji Ogata
CPC分类号： G02B15/161
摘要： The invention provides a two-unit or positive-negative type of zoom lens that has a zoom range of the order of 38-70 mm, comprises six lens groups or six lenses, and makes use of an aspherical plastic lens for cost reduction and for improving its performance as well. This zoom lens system is constructed from a first unit I of positive power and a second unit II of negative power and is designed to be variable in the air space between both the units for zooming. The first unit I includes a positive meniscus lens L1 convex on the object side, a negative lens L2, a positive lens L3 and a lens L4, and the second unit II includes a positive meniscus lens L5 convex on the image side and a negative meniscus lens L6 convex on the image side. At least L5 consists of a plastic lens having an aspherical surface.
摘要翻译： 本发明提供了具有38-70mm量级的变焦范围的两单元或正负型变焦透镜，包括六个透镜组或六个透镜，并且使用非球面塑料透镜来降低成本，并且 提高其性能。 该变焦透镜系统由正功率的第一单元I和负功率的第二单元II构成，并且被设计为在用于变焦的两个单元之间的空气空间中可变。 第一单元I包括在物体侧凸出的正弯月透镜L1，负透镜L2，正透镜L3和透镜L4，第二单元II包括在像侧凸起的正弯月透镜L5和负弯液面 透镜L6在图像侧凸起。 至少L5由具有非球面的塑料透镜组成。
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公开(公告)号：US08339714B2
公开(公告)日：2012-12-25
申请号：US13248570
申请日：2011-09-29
IPC分类号： G02B15/14
CPC分类号： G02B15/173
摘要： A zoom lens comprising, in order from an object side thereof, a first lens group of positive refracting power, a second lens group of negative refracting power, an aperture stop, a third lens group of positive refracting power, a fourth lens group of negative refracting power, and a fifth lens group of positive refracting power. Upon zooming from the wide-angle end to the telephoto end, at least the first lens group and the aperture stop remain fixed in position, the second and third lens groups move in the optical axis direction, and the separation between each of the lens groups and the aperture stop changes. Upon focusing from a focusing-on-infinity state to a close-range-focusing state, the fourth lens group moves in the optical axis direction, with satisfaction of the following: −0.36
摘要翻译： 一种变焦透镜，其从物体侧起依次具有正折射率的第一透镜组，负折射光焦度的第二透镜组，孔径光阑，正折射率的第三透镜组，负折射率的第四透镜组 屈光力和第五透镜组的正折射力。 当从广角端到望远端变焦时，至少第一透镜组和孔径光阑保持固定就位，第二和第三透镜组沿光轴方向移动，并且每个透镜组之间的间隔 并且孔径光阑改变。 从聚焦无限状态向近距离聚焦状态聚焦时，第四透镜组沿光轴方向移动，满足以下条件：-0.36
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公开(公告)号：US20110235191A1
公开(公告)日：2011-09-29
申请号：US12925470
申请日：2010-10-21
摘要： An imaging optical system has, in order from the object side to the image side thereof, a front lens group, an aperture stop, and a rear lens group. A lens located closest to object side in said front lens group always remains fixed in position, with satisfaction of the following conditions (1) and (2): 1.15≦fb/IHω≦1.7 (1) −4.0≦fn/f≦−1.3 (2) where f is a focal length of the whole imaging optical system, fn is a focal length of a first negative lens in said front lens group, fb is a back focus of the imaging optical system upon focusing on an object point at infinity, and IHω is a distance from an optical axis of a position where a chief ray from a maximum incident half angle of view (ω) upon focusing on an object point at infinity is imaged at the imaging plane.
摘要翻译： 成像光学系统从物体侧到其像侧依次具有前透镜组，孔径光阑和后透镜组。 满足以下条件（1）和（2）：1.15＆nlE; fb /IHω＆nlE; 1.7（1）-4.0＆nlE; fn / f＆nlE中的最靠近所述前透镜组中物体侧的透镜始终保持固定 ; -1.3（2）其中f是整个成像光学系统的焦距，fn是所述前透镜组中的第一负透镜的焦距，fb是在聚焦在物体上时成像光学系统的后焦点 指向无限远，并且IHω是在聚焦在无限远物体上的来自最大入射半视角（ω）的主光线在成像平面成像的位置处的光轴的距离。
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公开(公告)号：US07872809B2
公开(公告)日：2011-01-18
申请号：US12082661
申请日：2008-04-11
IPC分类号： G02B15/14
CPC分类号： G02B15/177
摘要： The invention relates to an optical system that is capable of providing a zoom lens having improved image-formation capability with a reduced number of lenses, and fabricating a slim yet high-performance digital or video camera. The optical system comprises a cemented lens having a cementing surface on its optical axis. Air contact surfaces on the light ray entrance and exit sides of the cemented lens G2 are aspheric, and at least one cementing surface in the cemented lens G2 satisfies condition (1). 6.4
摘要翻译： 本发明涉及一种光学系统，其能够提供具有减少的透镜数量的改进的图像形成能力的变焦透镜，以及制造纤细而高性能的数字或摄像机。 光学系统包括在其光轴上具有固化表面的胶合透镜。 胶合透镜G2的光线入射侧和出射侧的空气接触表面是非球面的，并且胶合透镜G2中的至少一个胶结表面满足条件（1）。 6.4 <|（r / R）| （1）这里r是固井表面的轴向曲率半径，R是固井表面的最大直径。
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公开(公告)号：US20050254139A1
公开(公告)日：2005-11-17
申请号：US11130176
申请日：2005-05-17
CPC分类号： G02B15/14
摘要： The invention relates to an image-formation lens system well balanced among cost reductions, size reductions and performance improvements and an imaging system incorporating that lens system. The image-formation lens system in the imaging system is a zoom lens system that comprises at least three lens groups including a first lens group G1 of positive power, a second lens group G2 of positive power and a third lens group G3 of negative power, wherein zooming is carried out by varying the spacing between adjacent lens groups. The zoom lens system comprises a total of up to 8 lenses, and satisfies the following conditions: 0.07
摘要翻译： 本发明涉及在成本降低，尺寸减小和性能改进之间良好平衡的图像形成透镜系统以及并入该透镜系统的成像系统。 成像系统中的图像形成透镜系统是变焦透镜系统，其包括至少三个透镜组，其包括正功率的第一透镜组G 1，正光焦度的第二透镜组G 2和第三透镜组G 3 负功率，其中通过改变相邻透镜组之间的间距来执行变焦。 变焦透镜系统包括总共多达8个透镜，并且满足以下条件：<？in-line-formula description =“In-line formula”end =“lead”？> 0.07
<？in-line-formula description =”In-line Formulas“ end =“lead”？> - 8％ <8％（3）<？in-line-formula description =“In-line Formulas”end =“tail”？> 在远摄端的变焦透镜系统的d行和g行之间的后焦点位置之间的差异是IH，在图像平面处的最大图像高度，WideFno和TeleFno是F - 分别在广角端和远摄端的变焦透镜系统的d线处，并且DTL 是在28.0°的视角处的d线失真量 广角端。 -
公开(公告)号：US5262897A
公开(公告)日：1993-11-16
申请号：US806335
申请日：1991-12-13
申请人： Kazuteru Kawamura
发明人： Kazuteru Kawamura
IPC分类号： G02B15/177 , G02B23/14 , G02B15/14 , G02B13/18
CPC分类号： G02B15/177 , G02B23/145
摘要： This invention relates to a zoom lens system that is an object lens for taking images which is independent of an objective lens for a viewfinder, said zoom lens system being less likely to vary in the total length by zooming in spite of having a high zoom ratio and being reduced in the total length under every condition from the wide angle to telephoto settings. To achieve this, the present zoom lens system is made up of a first lens unit having a negative refractive power, a second lens unit having a positive refractive power and a third lens unit having a positive refractive power. In zooming from the wide angle to telephoto end the spaces between the respective lens units are variable, and the present lens system satisfies the following condition:f.sub.B
摘要翻译： 本发明涉及一种变焦透镜系统，其是用于拍摄独立于取景器的物镜的图像的物镜，所述变焦透镜系统尽可能通过变焦而不太可能在总长度上变化，尽管具有高变焦比 并且在从广角到远摄设置的每个条件下的总长度减小。 为了实现这一点，本变焦透镜系统由具有负折光力的第一透镜单元，具有正折光力的第二透镜单元和具有正折光力的第三透镜单元组成。 在从广角到远摄端的放大中，各透镜单元之间的空间是可变的，并且本透镜系统满足以下条件：fB
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