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1. 发明授权

US5706138A Zoom lens system having a high zoom ratio 失效
标题翻译：具有高变焦比的变焦透镜系统
公开(公告)号：US5706138A
公开(公告)日：1998-01-06
申请号：US702044
申请日：1996-08-23
申请人： Tetsuya Abe , Takayuki Ito , Takashi Enomoto
发明人： Tetsuya Abe , Takayuki Ito , Takashi Enomoto
IPC分类号： G02B15/167 , G02B15/17 , G02B15/14
CPC分类号： G02B15/17
摘要： A zoom lens system having a high zoom ratio and a high aperture ratio includes a first lens group having a positive power, a second lens group having a negative power, a third lens group having a negative power, and a fourth lens group having a positive power. The second lens group has a magnification varying function and is moved during a zooming operation. The third lens group has a focus compensating function and is moved during the zooming operation. The fourth lens group has an image forming function and is not moved during the zooming operation.
摘要翻译：具有高变焦比和高开口率的变焦透镜系统包括具有正光焦度的第一透镜组，具有负光焦度的第二透镜组，具有负光焦度的第三透镜组和具有负光焦度的第四透镜组功率。第二透镜组具有倍率变化功能，并且在变焦操作期间移动。第三透镜组具有聚焦补偿功能，并且在变焦操作期间移动。第四透镜组具有图像形成功能，并且在变焦操作期间不移动。

2. 发明授权

US5815323A Fast aspherical zoom lens system 失效
标题翻译：快速非球面变焦镜头系统
公开(公告)号：US5815323A
公开(公告)日：1998-09-29
申请号：US907413
申请日：1997-08-07
申请人： Tetsuya Abe , Takayuki Ito , Takashi Enomoto
发明人： Tetsuya Abe , Takayuki Ito , Takashi Enomoto
IPC分类号： G02B13/18 , G02B15/167 , G02B15/17 , G02B15/14
CPC分类号： G02B15/173
摘要： A fast aspherical zoom lens system includes a positive first lens group, a negative second lens group, a negative third lens group, and a positive fourth lens group, arranged in this order from the object side. The lens system includes at least one aspherical surface. When the zooming operation is carried out, the second and third lens groups are moved. The aspherical surface is located at a position in which the following condition is satisfied: H.sub.ASP /H.sub.MAX
摘要翻译：快速非球面变焦透镜系统包括从物体侧依次排列的正的第一透镜组，负的第二透镜组，负的第三透镜组和正的第四透镜组。透镜系统包括至少一个非球面。当执行变焦操作时，移动第二和第三透镜组。非球面位于满足以下条件的位置：HASP / HMAX <0.35，其中HMAX表示在所有透镜表面的长焦距末端距离光轴最远的近轴光线的高度，HASP 表示在长焦距末端的近轴光线到非球面的高度。

3. 发明授权

US5786943A Zoom lens system having a high zoom ratio 失效
标题翻译：具有高变焦比的变焦透镜系统
公开(公告)号：US5786943A
公开(公告)日：1998-07-28
申请号：US702045
申请日：1996-08-23
申请人： Tetsuya Abe , Takayuki Ito , Takashi Enomoto
发明人： Tetsuya Abe , Takayuki Ito , Takashi Enomoto
IPC分类号： G02B15/167 , G02B15/17 , G02B15/14
CPC分类号： G02B15/17
摘要： First, second, third, and fourth lens groups, from an object side, have positive, negative, negative, and positive power, respectively. Movable second and third lens groups vary magnification and perform focus compensating. The fixed fourth lens group has an image forming function, and includes, from the object side, positive first and second lens sub-groups. The zoom lens satisfies the following relationships: 5.5
摘要翻译：从物体侧的第一，第二，第三和第四透镜组分别具有正，负，负和正功率。可移动的第二和第三透镜组改变放大率并执行聚焦补偿。固定的第四透镜组具有图像形成功能，并且从物体侧包括正的第一和第二透镜子组。变焦透镜满足以下关系：5.5

4. 发明授权

US06172819B2 Zoom lens system 失效
标题翻译：变焦镜头系统
公开(公告)号：US06172819B2
公开(公告)日：2001-01-09
申请号：US09173714
申请日：1998-10-16
申请人： Takashi Enomoto , Takayuki Ito
发明人： Takashi Enomoto , Takayuki Ito
IPC分类号： G02B1514
CPC分类号： G02B15/161
摘要： A zoom lens system which includes a positive first lens group and a negative second lens group, in this order from the object side; wherein zooming is performed by moving the first lens group and the second lens group, and by varying the distance between the first lens group and the second lens group; wherein the zoom lens system satisfies the following condition: −7.0
摘要翻译：一种变焦透镜系统，其从物体侧依次包括正的第一透镜组和负的第二透镜组; 其中通过移动所述第一透镜组和所述第二透镜组并且通过改变所述第一透镜组和所述第二透镜组之间的距离来执行变焦; 其中，所述变焦透镜系统满足以下条件：其中：fT表示在长焦距末端处的整个透镜系统的焦距，f2G表示第二透镜组的焦距。

5. 发明授权

US5877901A Super wide-angle zoom lens 失效
标题翻译：超广角变焦镜头
公开(公告)号：US5877901A
公开(公告)日：1999-03-02
申请号：US761789
申请日：1996-12-06
申请人： Takashi Enomoto , Takayuki Ito
发明人： Takashi Enomoto , Takayuki Ito
IPC分类号： G02B15/16 , G02B15/163 , G02B15/177 , G02B15/14
CPC分类号： G02B13/06 , G02B15/177 , Y10S359/902
摘要： A super wide-angle zoom lens includes at least a negative first lens group and a positive second lens group, in this order from an object side. A zooming operation is carried out by relatively moving the lens groups. When a photographing area is defined by a rectangular area, a boundary of a circular image forming area formed by the zoom lens is at least partially disposed in the rectangular photographing area at the shortest focal length of the zoom lens.
摘要翻译：超广角变焦透镜至少包括负第一透镜组和正第二透镜组，从物体侧开始。通过相对移动透镜组来执行变焦操作。当拍摄区域由矩形区域限定时，由变焦镜头形成的圆形图像形成区域的边界至少部分地设置在变焦镜头的最短焦距的矩形拍摄区域中。

6. 发明授权

US06437922B2 Zoom lens system 失效
标题翻译：变焦镜头系统
公开(公告)号：US06437922B2
公开(公告)日：2002-08-20
申请号：US09769458
申请日：2001-01-26
申请人： Takashi Enomoto , Hiroshi Nomura , Takayuki Ito , Shinichiro Ishii
发明人： Takashi Enomoto , Hiroshi Nomura , Takayuki Ito , Shinichiro Ishii
IPC分类号： G02B1517
CPC分类号： G02B15/161 , G02B15/163
摘要： In a short-focal-length side zooming range, a moveable sub-lens group of a zoom lens system is made stationary at one of the object-side and the image-side end. At the intermediate switching focal length, the moveable sub-lens group is moved to the other of the object-side and the image-side end. In a long-focal-length side zooming range, the moveable sub-lens group is made stationary at the other end, and the zoom lens system satisfies the following condition: mNt−mNw
摘要翻译：在短焦侧变焦范围中，将变焦透镜系统的可移动子透镜组在物体侧和像侧端部之一处静止。在中间切换焦距下，可移动子透镜组移动到物体侧和图像侧端部中的另一个。在长焦侧变焦范围中，可移动子透镜组在另一端被固定，变焦透镜系统满足以下条件：其中，mNt表示最大像平面侧透镜组的横向倍率当可移动子透镜组在一端时的变焦透镜系统; andmNw表示当可移动子透镜组处于另一端时变焦透镜系统的最大像平面侧透镜组的横向倍率

7. 发明授权

US5969880A Zoom lens system 失效
标题翻译：变焦镜头系统
公开(公告)号：US5969880A
公开(公告)日：1999-10-19
申请号：US045110
申请日：1998-03-20
申请人： Sachio Hasushita , Takayuki Ito , Takashi Enomoto
发明人： Sachio Hasushita , Takayuki Ito , Takashi Enomoto
IPC分类号： G02B13/18 , G02B15/16 , G02B15/163 , G02B15/20 , G02B15/14
CPC分类号： G02B15/163
摘要： A zoom lens system comprising at least three lens groups including a positive first lens group, a positive second lens group having at least one negative lens element, and a third lens group having a negative focal length, wherein upon zooming from the shortest focal length toward the longest focal length, all the lens groups are moved toward the object side, and the distance between the first and second lens groups increases and the distance between the second and third lens groups decreases, and wherein the system satisfies the conditions (1) -0.3 0), f.sub.2G designates the focal length of the second lens group (f.sub.2G >0), f.sub.3G designates the focal length of the third lens group (f.sub.3G
摘要翻译：一种变焦透镜系统，包括至少三个透镜组，包括正的第一透镜组，具有至少一个负透镜元件的正的第二透镜组和具有负焦距的第三透镜组，其中，从最短焦距变焦到最长焦距，所有透镜组朝向物体侧移动，并且第一和第二透镜组之间的距离增加，并且第二和第三透镜组之间的距离减小，并且其中系统满足条件（1） - 0.3 0），f2G表示第二透镜组（f2G> 0）的焦距，f3G表示第三透镜组（f3G <0）的焦距，N2Gn表示所有负像素的平均折射率第二透镜的透镜元件g 。。

8. 发明授权

US5815322A Zoom lens system having high zoom ratio 失效
标题翻译：变焦镜头系统具有高变焦比
公开(公告)号：US5815322A
公开(公告)日：1998-09-29
申请号：US907411
申请日：1997-08-07
申请人： Takashi Enomoto , Takayuki Ito
发明人： Takashi Enomoto , Takayuki Ito
IPC分类号： G02B15/167 , G02B15/17 , G02B15/14
CPC分类号： G02B15/173
摘要： A zoom lens system of high zoom ratio includes a first positive lens group, a second negative lens group, a third negative lens group, and a fourth positive lens group, arranged in this order from the object side. The second and third lens groups are moved during zooming while the first and fourth lens groups are stationary during zooming. The lens system satisfies the condition 1
摘要翻译：高倍率的变焦透镜系统包括从物体侧依次排列的第一正透镜组，第二负透镜组，第三负透镜组和第四正透镜组。第二和第三透镜组在变焦期间移动，而第一和第四透镜组在变焦期间是静止的。透镜系统满足条件1 <（D3w-D3T）/ fw <6，其中D3w表示在短焦距端处第三透镜组和第四透镜组之间的距离，D3T表示第三透镜组和长焦距的第四透镜组，fw表示焦距在短焦距处的整个变焦透镜系统的焦距。

9. 发明授权

US5684643A Fast wide-angle lens system 失效
标题翻译：快速广角镜头系统
公开(公告)号：US5684643A
公开(公告)日：1997-11-04
申请号：US698920
申请日：1996-08-16
申请人： Takashi Enomoto , Takayuki Ito
发明人： Takashi Enomoto , Takayuki Ito
IPC分类号： G02B13/04 , G02B9/64
CPC分类号： G02B13/04
摘要： A wide-angle fast lens system includes a front lens group having a negative power, a diaphragm and a rear lens group having a positive power. The front lens group consists of a first sub-lens group and a second sub-lens group having a negative power. The lens system satisfies the following relationships: -0.6
摘要翻译：广角快速透镜系统包括具有负功率的前透镜组，具有正光焦度的光阑和后透镜组。前透镜组由具有负功率的第一子透镜组和第二子透镜组组成。透镜系统满足以下关系：-0.6

10. 发明授权

US06369955B1 Zoom lens system 有权
标题翻译：变焦镜头系统
公开(公告)号：US06369955B1
公开(公告)日：2002-04-09
申请号：US09534307
申请日：2000-03-23
申请人： Takashi Enomoto , Hiroshi Nomura , Takayuki Ito , Shinichiro Ishii
发明人： Takashi Enomoto , Hiroshi Nomura , Takayuki Ito , Shinichiro Ishii
IPC分类号： G02B1514
CPC分类号： G03B3/00 , G02B7/102
摘要： A zoom lens system includes a plurality of lens groups being relatively moveable in order to vary the focal length, and at least one lens group is arranged to be a switching lens group which includes two or more sub-lens groups, and in which one sub-lens group is made moveable, along the optical axis, with respect to the other sub-lens group. In the first focal-length range of the zooming range of the zoom lens system, the moveable sub-lens group and the other sub-lens group maintain the first distance; and in the second focal-length range which covers the first focal-length range and a range different therefrom, the moveable sub-lens group and the other sub-lens group maintain the second distance which is different from the first one.
摘要翻译：变焦透镜系统包括多个可相对移动的透镜组以改变焦距，并且至少一个透镜组被布置为包括两个或更多个子透镜组的切换透镜组，并且其中一个子光学组相对于另一个子透镜组沿光轴可移动。在变焦透镜系统的变焦范围的第一焦距范围内，可移动子透镜组和另一副透镜组保持第一距离; 并且在覆盖第一焦距范围和与其不同的范围的第二焦距范围中，可移动子透镜组和另一副透镜组保持与第一距离不同的第二距离。

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