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公开(公告)号：US08582212B2
公开(公告)日：2013-11-12
申请号：US13136052
申请日：2011-07-20
CPC分类号： G02B13/04 , G02B15/173 , G02B15/177
摘要： The invention provides a zoom lens, characterized by comprising, in order from an object side thereof, a first lens group of positive refracting power, a second lens group of negative refracting power, a third lens group of positive refracting power, and a fourth lens group of negative refracting power, upon zooming from a wide-angle end to a telephoto end of the zoom lens, a separation between the respective lens group changes, a separation between the first lens group and the second lens group becomes narrow, and a separation between the second lens group and the third lens group grows wide; upon focusing from a focusing-on-infinity state to a close-range focusing state, the fourth lens group moves in an optical axis direction; and Conditions (1) and (2) are satisfied at the wide-angle end.
摘要翻译： 本发明提供一种变焦透镜，其特征在于，从物体侧依次包括正折射率的第一透镜组，负折射率的第二透镜组，正折射率的第三透镜组和第四透镜 一组负屈光力，在从变焦镜头的广角端变焦到望远端时，各透镜组变化之间的间隔，第一透镜组和第二透镜组之间的间隔变窄，并且分离 在第二透镜组和第三透镜组之间变宽; 当聚焦从聚焦无限状态到近距离聚焦状态时，第四透镜组沿光轴方向移动; 条件（1）和（2）在广角端满足。
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公开(公告)号：US20120019931A1
公开(公告)日：2012-01-26
申请号：US13136052
申请日：2011-07-20
IPC分类号： G02B15/14
CPC分类号： G02B13/04 , G02B15/173 , G02B15/177
摘要： The invention provides a zoom lens, characterized by comprising, in order from an object side thereof, a first lens group of positive refracting power, a second lens group of negative refracting power, a third lens group of positive refracting power, and a fourth lens group of negative refracting power, upon zooming from a wide-angle end to a telephoto end of the zoom lens, a separation between the respective lens group changes, a separation between the first lens group and the second lens group becomes narrow, and a separation between the second lens group and the third lens group grows wide; upon focusing from a focusing-on-infinity state to a close-range focusing state, the fourth lens group moves in an optical axis direction; and Conditions (1) and (2) are satisfied at the wide-angle end.
摘要翻译： 本发明提供一种变焦透镜，其特征在于，从物体侧依次包括正折射率的第一透镜组，负折射率的第二透镜组，正折射率的第三透镜组和第四透镜 一组负屈光力，在从变焦镜头的广角端变焦到望远端时，各透镜组变化之间的间隔，第一透镜组和第二透镜组之间的间隔变窄，并且分离 在第二透镜组和第三透镜组之间变宽; 当聚焦从聚焦无限状态到近距离聚焦状态时，第四透镜组沿光轴方向移动; 条件（1）和（2）在广角端满足。
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公开(公告)号：US20120212835A1
公开(公告)日：2012-08-23
申请号：US13369777
申请日：2012-02-09
申请人： Hirohiko KIMATA , Yasuharu Yamada , Yasuji Ogata , Kazuteru Kawamura , Kenichi Nagasawa , Hiroshi Kodama , Toshio Takahashi , Kento Kokubu
发明人： Hirohiko KIMATA , Yasuharu Yamada , Yasuji Ogata , Kazuteru Kawamura , Kenichi Nagasawa , Hiroshi Kodama , Toshio Takahashi , Kento Kokubu
CPC分类号： G02B15/22 , G02B15/14 , G02B15/173 , G02B15/177
摘要： In a zoom lens of a fixed total length, at the time of changing the magnification from the wide-angle end toward the telephoto end, the first lens group is anchored while the second lens group is moved, and the third and fourth lens groups are moved so as to be located at the object side of the telephoto end relative to the wide-angle end, such that: the interval between the second and third lens groups is decreased at the telephoto end relative to the wide-angle end; the interval between the third and fourth lens groups is increased at the telephoto end relative to the wide-angle end; and the interval between the fourth and fifth lens groups is increased at the telephoto end relative to the wide-angle end, and at the time of focusing a near object point from a remote object point, the second lens group is moved.
摘要翻译： 在固定的总长度的变焦透镜中，在从广角端向望远端改变放大倍数时，第一透镜组在第二透镜组移动的同时被固定，第三和第四透镜组是 相对于广角端部位于长焦端的物体侧，使得第二透镜组和第三透镜组之间的间隔在望远端相对于广角端减小; 第三透镜组和第四透镜组之间的间隔在望远端相对于广角端增加; 并且第四透镜组和第五透镜组之间的间隔在望远端相对于广角端增加，并且在从远程对象点聚焦近物点时，第二透镜组移动。
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公开(公告)号：US08711489B2
公开(公告)日：2014-04-29
申请号：US13369777
申请日：2012-02-09
IPC分类号： G02B15/14 , G02B15/173
CPC分类号： G02B15/22 , G02B15/14 , G02B15/173 , G02B15/177
摘要： In a zoom lens of a fixed total length, at the time of changing the magnification from the wide-angle end toward the telephoto end, the first lens group is anchored while the second lens group is moved, and the third and fourth lens groups are moved so as to be located at the object side of the telephoto end relative to the wide-angle end, such that: the interval between the second and third lens groups is decreased at the telephoto end relative to the wide-angle end; the interval between the third and fourth lens groups is increased at the telephoto end relative to the wide-angle end; and the interval between the fourth and fifth lens groups is increased at the telephoto end relative to the wide-angle end, and at the time of focusing a near object point from a remote object point, the second lens group is moved.
摘要翻译： 在固定的总长度的变焦透镜中，在从广角端向望远端改变放大倍数时，第一透镜组在第二透镜组移动的同时被固定，第三和第四透镜组是 相对于广角端部位于长焦端的物体侧，使得第二透镜组和第三透镜组之间的间隔在望远端相对于广角端减小; 第三透镜组和第四透镜组之间的间隔在望远端相对于广角端增加; 并且第四透镜组和第五透镜组之间的间隔在望远端相对于广角端增加，并且在从远程对象点聚焦近物点时，第二透镜组移动。
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公开(公告)号：US20050134968A1
公开(公告)日：2005-06-23
申请号：US11016734
申请日：2004-12-21
申请人： Yasuji Ogata
发明人： Yasuji Ogata
IPC分类号： G02B15/14 , G02B15/177
CPC分类号： G02B15/177
摘要： The invention relates to a taking lens system with a leadoff negative lens group wherein entrance of dust into a lens barrel upon focusing is prevented and fluctuations of aberrations with focusing are minimized, and a imaging device that incorporates the same. The taking lens system comprises, in order from an object side thereof, a first lens group G1 having negative refracting power, a second lens group G2 having positive refracting power, an aperture stop S and a third lens group G3 having positive refracting power. Focusing from an infinite distance to a finite distance is performed by setting the second lens group and the third lens group such that the position of the second lens group upon focusing on a finite distance is located on an image side of the taking lens system with respect to the position of the second lens group upon focusing on an infinite distance and the position of the third lens group upon focusing on a finite distance is located on an object side of the taking lens system with respect to the position of the third lens group upon focusing on an infinite distance, while the first lens group remains fixed.
摘要翻译： 本发明涉及一种具有引线负透镜组的摄像透镜系统，其中防止了聚焦时将灰尘入射到镜筒中，并且使聚焦的像差的波动最小化，以及包含其的成像装置。 拍摄镜头系统从物体侧依次包括具有负折射力的第一透镜组G 1，具有正折射力的第二透镜组G 2，孔径光阑S和具有正折射率的第三透镜组G 3 功率。 通过设置第二透镜组和第三透镜组来实现从无限距离到有限距离的聚焦，使得第二透镜组在聚焦在有限距离上的位置位于拍摄镜头系统的图像侧，相对于 在聚焦在无限距离上的第二透镜组的位置，并且第三透镜组在聚焦在有限距离上的位置位于拍摄透镜系统的物体侧相对于第三透镜组的位置对 专注于无限距离，而第一个镜头组保持固定。
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公开(公告)号：US5353160A
公开(公告)日：1994-10-04
申请号：US917999
申请日：1992-07-24
申请人： Yasuji Ogata
发明人： Yasuji Ogata
IPC分类号： G02B15/167 , G02B15/14 , G02B13/18
CPC分类号： G02B15/167
摘要： The present invention provides a three-unit zoom lens system comprising, in order from the object side, a first lens unit G1 consisting of a negative meniscus lens convex on the object side and a positive meniscus lens convex on the object side and having a positive refracting power as a whole, a second lens unit G2 consisting of one positive lens, or one negative lens and one positive lens, and having a positive refracting power as a whole and a third lens unit G3 consisting of one negative lens, said first and second lens units being movable toward each other for zooming from the wide to tele position. This compact zoom lens system comprises 4 or 5 lenses and is of sufficient performance in terms of a zoom ratio of 1.5 to 2.
摘要翻译： 本发明提供一种三单元变焦透镜系统，其从物体侧起依次包括由物体侧凸起的负弯月形透镜和物体侧凸起的正弯月形透镜构成的第一透镜单元G1，具有正 作为整体的屈光力，由一个正透镜或一个负透镜和一个正透镜组成的并具有正折射力的第二透镜单元G2和由一个负透镜组成的第三透镜单元G3，所述第一透镜单元G2 第二透镜单元可相对于彼此移动，以从宽到远的位置变焦。 这种紧凑型变焦透镜系统包括4或5个透镜，并且在1.5至2的变焦比方面具有足够的性能。
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公开(公告)号：US6069743A
公开(公告)日：2000-05-30
申请号：US159223
申请日：1998-09-23
申请人： Tetsuo Nagata , Yasuji Ogata
发明人： Tetsuo Nagata , Yasuji Ogata
CPC分类号： G02B27/4211 , G02B15/173 , G02B27/0037
摘要： The invention relates to a high-performance zoom lens system which can use a diffractive surface therein for use with an image sensor having a number of pixels. The zoom lens system includes at least a first lens group G1 having positive power and a second lens group G2 having negative power between an object side of the system and an aperture stop S. The first lens group G1 includes at least one diffractive surface r.sub.1, and satisfies the following condition:0.001
摘要翻译： 本发明涉及一种高性能变焦透镜系统，其能够使用其中的衍射表面与具有多个像素的图像传感器一起使用。 该变焦透镜系统至少包括具有正光焦度的第一透镜组G1和在该系统的物体侧之间具有负光焦度的第二透镜组G2。第一透镜组G1包括至少一个衍射面r1， 并且满足以下条件：0.001
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公开(公告)号：US5982544A
公开(公告)日：1999-11-09
申请号：US109416
申请日：1998-07-02
申请人： Yasuji Ogata
发明人： Yasuji Ogata
CPC分类号： G02B27/4211 , G02B15/167
摘要： The invention provides a compact yet high-zoom-ratio zoom lens system for use with lens shutter cameras, which is well corrected for aberrations albeit being made up of a small number of lenses. The zoom lens comprises a first lens group G1 of positive refracting power, a second lens group G2 of positive refractive power and a third lens group G3 of negative refracting power. The lens groups move for zooming from the wide angle side to the telephoto side, with a separation between the first and second lens groups becoming wide and a separation between the second and third lens groups becoming narrow. At least one lens group has a diffractive surface therein, and satisfies 1.8
摘要翻译： 本发明提供了一种用于透镜快门摄像机的紧凑型高变焦比变焦透镜系统，其对于由少量透镜构成的像差进行了良好的校正。 变焦透镜包括正折射率的第一透镜组G1，正折光力的第二透镜组G2和负折射光焦度的第三透镜组G3。 透镜组从广角侧向远摄侧移动，第一和第二透镜组之间的间隔变宽并且第二和第三透镜组之间的间隔变窄。 至少一个透镜组在其中具有衍射表面，并且满足1.8 <βT /βW <4.0，其中βT和βW是具有在广角端和远摄端的衍射面的透镜组的横向放大率 镜头系统。
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公开(公告)号：US5663836A
公开(公告)日：1997-09-02
申请号：US583670
申请日：1996-01-15
申请人： Yasuji Ogata
发明人： Yasuji Ogata
IPC分类号： G02B15/177 , G02B15/14 , G02B3/02
CPC分类号： G02B15/177
摘要： A zoom lens system comprising a front lens unit having a negative refractive power and a rear lens unit having a positive refractive power, and configured so as to perform a change of a magnification thereof by varying an airspace reserved between these two lens units. The rear lens unit consists, in order from the object side, of a positive lens component, a positive lens component and a negative lens component which has at least one aspherical surface. The zoom lens system is composed of a small number of lens elements, sufficiently compact, and has high optical performance, a wide field angle and a high vari-focal ratio.
摘要翻译： 一种变焦透镜系统，包括具有负折光力的前透镜单元和具有正折光力的后透镜单元，并且被配置为通过改变在这两个透镜单元之间保留的空间来实现其变倍。 后透镜单元从物体侧依次包括具有至少一个非球面的正透镜部件，正透镜部件和负透镜部件。 变焦透镜系统由少量透镜元件组成，足够紧凑，并且具有高光学性能，宽场角和高变焦比。
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公开(公告)号：US5546236A
公开(公告)日：1996-08-13
申请号：US208836
申请日：1994-03-11
申请人： Yasuji Ogata , Toshiro Baba
发明人： Yasuji Ogata , Toshiro Baba
CPC分类号： G02B13/06
摘要： A wide-angle photographic lens system comprising a front lens unit having a positive refractive power, an aperture stop and a rear lens unit having a positive refractive power or a negative refractive power; the front lens unit comprising at least one positive lens component and at least one negative lens component, whereas said rear lens unit consisting of a positive lens component having a convex surface on the image side. This photographic lens system has a short total length (a length as measured from a first surface to an image side surface of the lens system and a small value of .SIGMA.d (a distance as measured from the first surface to a final surface thereof), and is suited for use with collapsible mount type cameras.
摘要翻译： 一种广角摄影镜头系统，包括具有正折光力的前透镜单元，孔径光阑和具有正折射光焦度或负折射光焦度的后透镜单元; 前透镜单元包括至少一个正透镜部件和至少一个负透镜部件，而所述后透镜单元由在像侧上具有凸面的正透镜部件组成。 该摄影透镜系统具有短的总长度（从透镜系统的第一表面到像侧表面测量的长度以及SIGMA d的小值（从第一表面到其最终表面测量的距离）， 并且适用于可折叠式安装型摄像机。
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