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1. 发明授权

US07339749B2 Zoom lens and imaging system incorporating it 有权
标题翻译：变焦镜头与成像系统相结合
公开(公告)号：US07339749B2
公开(公告)日：2008-03-04
申请号：US11328348
申请日：2006-01-10
申请人： Masahiro Katakura
发明人： Masahiro Katakura
IPC分类号： G02B15/14
CPC分类号： G02B15/177
摘要： The invention concerns a zoom lens that has a zoom ratio of the order of 3, and is of sufficiently compact size and improved optical properties. The zoom lens comprises, in order from its object side, a first lens unit having negative refracting power, a second lens unit having positive refracting power and a third lens unit having positive refracting power, wherein the space between adjacent lens units is varied for zooming. The first lens unit consists of, in order from its object side, one positive lens and one negative lens, and the second lens unit consists of, in order from its object side, two positive lenses and one negative lens. The third lens unit consists of one positive lens, and satisfies the following condition. 0.5
摘要翻译：本发明涉及一种变焦倍率为3级的变焦镜头，并且具有足够紧凑的尺寸和改善的光学性能。变焦透镜从其物体侧依次包括具有负折射力的第一透镜单元，具有正折射率的第二透镜单元和具有正折射力的第三透镜单元，其中相邻透镜单元之间的空间变化以变焦。第一透镜单元从其物体侧依次包括一个正透镜和一个负透镜，并且第二透镜单元从其物体侧依次包括两个正透镜和一个负透镜。第三透镜单元由一个正透镜组成，满足以下条件。 <？in-line-formula description =“In-line Formulas”end =“lead”？> 0.5 <（R 1 R 2 -R 2）/（R _{这里R＆lt; 1＆lt; >和R 2分别是第三透镜单元中的正透镜的物体和像侧表面的轴向半径。}

2. 发明授权

US07418199B2 Imaging apparatus 有权
标题翻译：成像设备
公开(公告)号：US07418199B2
公开(公告)日：2008-08-26
申请号：US11177277
申请日：2005-07-11
申请人： Kazuteru Kawamura , Kazuya Nishimura
发明人： Kazuteru Kawamura , Kazuya Nishimura
IPC分类号： G03B17/00 , H04N5/262 , H04N5/255 , G02B13/16 , G02B15/14
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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