-
公开(公告)号：US20150146085A1
公开(公告)日：2015-05-28
申请号：US14513363
申请日：2014-10-14
发明人： Takahiro Hatada
IPC分类号： G02B13/04 , G02B15/16 , G02B15/177
CPC分类号： G02B15/161 , G02B13/06 , G02B15/177
摘要： In an optical system including, in order from an object side to an image side: a front unit (LF) having a negative refractive power; an aperture stop; and a rear unit (LR) having a positive refractive power, the front unit (LF) includes a meniscus-shaped negative lens (g1) closest to the object side, and a focal length (fw) of the entire optical system, a focal length (fg1) of the meniscus-shaped negative lens (g1), and a curvature radius (R2) of a lens surface on the image side of the meniscus-shaped negative lens (g1) are appropriately set.
摘要翻译： 在从物体侧到像侧依次包括具有负屈光力的前单元（LF）的光学系统中， 孔径光阑; 和具有正折光力的后单元（LR），前单元（LF）包括最靠近物侧的弯月形负透镜（g1）和整个光学系统的焦距（fw），焦点 适当地设定弯液面状负透镜（g1）的长度（fg1）和弯液面状负透镜（g1）的像侧的透镜面的曲率半径（R2）。
-
12.发明授权Zoom lens with high optical performance and image pickup apparatus having the same 有权具有高光学性能的变焦镜头和具有该变焦镜头的摄像装置公开(公告)号：US08988785B2
公开(公告)日：2015-03-24
申请号：US13804277
申请日：2013-03-14
发明人： Takahiro Hatada
IPC分类号： G02B15/14 , G02B15/173 , G02B27/64
CPC分类号： G02B15/14 , G02B15/173 , G02B27/646
摘要： A zoom lens comprises a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, and a rear group including at least two lens units and having a positive refractive power as a whole, in order from an object side to an image side. An interval of each of the lens units changes in a zoom operation, the rear group includes a lens unit R having a positive refractive power at the most image side, the lens unit R includes a lens having a concave surface at the image side and having an aspherical surface shape where a negative refractive power becomes stronger with increasing distance from an optical axis, and focal lengths f1, fR, and fw of the first lens unit, the lens unit R, and a whole system at a wide-angle end, respectively, are appropriately set.
摘要翻译： 变焦透镜包括具有正屈光力的第一透镜单元，具有负折光力的第二透镜单元和包括至少两个透镜单元并且具有整体的正折射光焦度的后组，从物侧 到图像侧。 每个透镜单元的间隔在变焦操作中改变，后组包括在最多像侧具有正折射力的透镜单元R，透镜单元R包括在像侧具有凹面的透镜，并且具有 第一透镜单元，透镜单元R以及广角端的整个系统的焦距f1，fR，fw，其中负折射力随着与光轴的距离的增加而变强， 分别适当设定。
-
公开(公告)号：US20220171174A1
公开(公告)日：2022-06-02
申请号：US17535432
申请日：2021-11-24
发明人： Takahiro Hatada
摘要： A zoom lens L0 includes a first lens group L1 and a rear group LR disposed in order from an object side to an image side, the first lens group L1 having a negative refractive power and the rear group LR having a positive refractive power as a whole. The rear group LR includes a partial group LP, a partial group LN, and two or more lens groups between which distances change in zooming. When image blur is corrected, the partial group LN moves in a direction including a component of a direction perpendicular to an optical axis. A lens surface closest to the object side among lens surfaces of the partial group LN and a lens surface closest to the image side among the lens surfaces of the partial group LN are both concave surfaces.
-
公开(公告)号：US20220146801A1
公开(公告)日：2022-05-12
申请号：US17585943
申请日：2022-01-27
发明人： Takahiro Hatada
IPC分类号： G02B15/14
摘要： A zoom lens includes, in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, and a subsequent unit having a positive refractive power as a whole. A distance between adjacent lens units changes during zooming. The first lens unit includes a single lens, and the subsequent unit includes a third lens unit having a positive refractive power closest to the object side in the subsequent unit and a lens unit LP having a positive refractive power closest to the image side among the zoom lenses. During zooming from a wide-angle end to a telephoto end, the second lens unit moves toward the object side. A predetermined condition is satisfied.
-
公开(公告)号：US20200319436A1
公开(公告)日：2020-10-08
申请号：US16836127
申请日：2020-03-31
发明人： Takahiro Hatada
IPC分类号： G02B15/14
摘要： A zoom lens includes, in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, and a subsequent unit having a positive refractive power as a whole. A distance between adjacent lens units changes during zooming. The first lens unit includes a single lens, and the subsequent unit includes a third lens unit having a positive refractive power closest to the object side in the subsequent unit and a lens unit LP having a positive refractive power closest to the image side among the zoom lenses. During zooming from a wide-angle end to a telephoto end, the second lens unit moves toward the object side. A predetermined condition is satisfied.
-
公开(公告)号：US20190271829A1
公开(公告)日：2019-09-05
申请号：US16417302
申请日：2019-05-20
发明人： Takahiro Hatada
IPC分类号： G02B9/62 , G02B15/173 , G02B9/64 , G02B15/14
摘要： A zoom lens includes a first lens unit L1 having positive refractive power, a second lens unit L2 having negative refractive power, and a rear lens group LB including a plurality of lens units and having positive refractive power. The rear lens group LB includes a lens unit LF configured to move during focusing and having negative refractive power, a lens unit LN disposed on the image side of the lens unit LF and having negative refractive power, and a lens unit LP disposed on the image side of the lens unit LN and having the largest positive refractive power among the lens units having positive refractive power. The lens units LP and LN move to the object side in a predetermined locus during zooming from the wide-angle end to the telephoto end, and the lens units LP and LF satisfy a predetermined conditional expression.
-
公开(公告)号：US10353171B2
公开(公告)日：2019-07-16
申请号：US15905449
申请日：2018-02-26
发明人： Takahiro Hatada
IPC分类号： G02B15/14 , G02B9/62 , G02B9/64 , G02B15/173
摘要： A zoom lens includes a first lens unit L1 having positive refractive power, a second lens unit L2 having negative refractive power, and a rear lens group LB including a plurality of lens units and having positive refractive power. The rear lens group LB includes a lens unit LF configured to move during focusing and having negative refractive power, a lens unit LN disposed on the image side of the lens unit LF and having negative refractive power, and a lens unit LP disposed on the image side of the lens unit LN and having the largest positive refractive power among the lens units having positive refractive power. The lens units LP and LN move to the object side in a predetermined locus during zooming from the wide-angle end to the telephoto end, and the lens units LP and LF satisfy a predetermined conditional expression.
-
公开(公告)号：US09207438B2
公开(公告)日：2015-12-08
申请号：US13664829
申请日：2012-10-31
发明人： Takahiro Hatada
CPC分类号： G02B15/17 , G02B15/14 , G02B27/646
摘要： A zoom lens includes, in order from the object side to the image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a negative refractive power, and a rear lens group including a plurality of lens units and having a positive refractive power as a whole. The distances between adjacent lens units are changed during zooming. The third lens unit is moved during focusing. The focal length, fw, of the entire zoom lens system at the wide-angle end; the focal length, ft, of the entire zoom lens system at the telephoto end; the combined focal length, f12w, of the first and second lens units at the wide-angle end; and the combined focal length, f12t, of the first and second lens units at the telephoto end are appropriately set to satisfy predetermined conditions.
摘要翻译： 变焦透镜从物体侧到像侧依次包括具有正折光力的第一透镜单元，具有负屈光力的第二透镜单元，具有负折光力的第三透镜单元和后透镜 其包括多个透镜单元并且整体具有正的折射光焦度。 在变焦期间相邻镜头单元之间的距离发生变化。 聚焦期间第三个透镜单元移动。 整个变焦镜头系统在广角端的焦距fw; 整个变焦镜头系统在望远端的焦距，ft; 在广角端的第一和第二透镜单元的组合焦距f12w; 并且适当地设置在望远端的第一和第二透镜单元的组合焦距f12t以满足预定条件。
-
公开(公告)号：US09036265B2
公开(公告)日：2015-05-19
申请号：US13890621
申请日：2013-05-09
发明人： Takahiro Hatada
CPC分类号： G02B15/12 , G02B15/10 , G02B15/14 , G02B27/646 , H04N5/2254
摘要： An optical system (OL) includes a magnification conversion optical unit (EXT) configured to be insertable and removable at a position between an aperture stop (SP) and an image plane (IP) of the optical system in order to change a focal length of the optical system, a total lens length of the optical system is constant before and after insertion of the magnification conversion optical unit, and a length Lp on an optical axis from the aperture stop to the image plane of the optical system, and a length Le on the optical axis from a lens surface closest to an object side of the magnification conversion optical unit to the image plane when the magnification conversion optical unit is inserted are appropriately set.
摘要翻译： 光学系统（OL）包括倍率转换光学单元（EXT），其被配置为在光学系统的孔径光阑（SP）和像平面（IP）之间的位置处可插入和移除，以便改变光学系统的焦距 光学系统中，光学系统的总透镜长度在放大转换光学单元插入之前和之后是恒定的，并且在光轴上从孔径光阑到光学系统的像面的长度Lp以及长度Le 适当地设定放大倍率转换光学单元插入时从最接近放大倍率转换光学单元的物体侧的透镜表面到像面的光轴。
-
公开(公告)号：US20130208155A1
公开(公告)日：2013-08-15
申请号：US13765107
申请日：2013-02-12
发明人： Takahiro Hatada
IPC分类号： G02B15/14
摘要： A zoom lens includes an imaging lens unit having a positive refractive power and provided nearest to an image-side end, and a focusing lens unit having a positive refractive power and provided on an object side of the imaging lens unit. A distance between the imaging lens unit and the focusing lens unit changes during zooming. The focusing lens unit moves during focusing. The imaging lens unit includes, at a position thereof nearest to an object-side end, a negative meniscus lens component that is concave on the object side thereof.
摘要翻译： 变焦透镜包括具有正折射力并且最靠近图像侧端设置的成像透镜单元和具有正屈光力并设置在成像透镜单元的物体侧的聚焦透镜单元。 成像透镜单元与聚焦透镜单元之间的距离在变焦期间变化。 聚焦镜头单元在聚焦过程中移动。 成像透镜单元在其最靠近物体侧端部的位置处包括在其物体侧上凹入的负弯月形透镜部件。
-
-
-
-
-
-
-
-
-
搜索结果
43 条记录 (耗时 0.022 秒)
