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公开(公告)号：US11280987B2
公开(公告)日：2022-03-22
申请号：US16542105
申请日：2019-08-15
申请人： FUJIFILM Corporation
发明人： Motoari Ota , Masaru Yonezawa , Takuya Tanaka
IPC分类号： G02B15/14 , G02B15/167
摘要： The zoom lens, in order from the object side, a positive first lens group that does not move during zooming, a negative second lens group that moves during zooming, a negative third lens group that moves during zooming, at least one lens group that moves during zooming, and a rear group that does not move during zooming. All distances between the lens groups adjacent to each other change during zooming. The zoom lens satisfies predetermined conditional expressions.
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公开(公告)号：US10757317B2
公开(公告)日：2020-08-25
申请号：US16451293
申请日：2019-06-25
申请人： FUJIFILM Corporation
发明人： Takuya Tanaka
摘要： A zoom lens has, in order from an object side, a focusing unit including a focusing lens group moving for focusing, a variable magnification unit including at least two variable magnification lens groups moving while changing a mutual interval for variable magnification, an aperture stop, and an image forming unit including an image forming lens group. The image forming unit consists of, in order from the object side, an M1 lens group, an M2N lens group, and an M3 lens group. The M2N lens group is replaceable with an M2E lens group that enlarges an image forming magnification. The M2E lens group satisfies predetermined conditional expressions (1) to (4).
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公开(公告)号：US09753257B2
公开(公告)日：2017-09-05
申请号：US14940145
申请日：2015-11-13
申请人： FUJIFILM Corporation
发明人： Takuya Tanaka
CPC分类号： G02B13/0045 , G02B9/64
摘要： An imaging lens consisting essentially of, in order from the object side, a first lens having a negative refractive power with the object side surface having a concave shape, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens having a negative refractive power with the image side surface having a concave shape with at least one inflection point, in which an aperture stop is provided between the first lens and the fifth lens, and the imaging lens satisfies predetermined conditional expressions. One of the second lens and the third lens has a positive refractive power and the other has a negative refractive power, and one of the fifth lens and the sixth lens has a positive refractive power and the other has a negative refractive power.
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公开(公告)号：US11327280B2
公开(公告)日：2022-05-10
申请号：US16542113
申请日：2019-08-15
申请人： FUJIFILM Corporation
发明人： Motoari Ota , Masaru Yonezawa , Takuya Tanaka
IPC分类号： G02B15/14 , G02B15/167
摘要： The zoom lens consists of, in order from the object side, a positive first lens group that does not move during zooming, a negative second lens group that moves during zooming, a negative third lens group that moves during zooming, at least one lens group that moves during zooming, and a rear group that does not move during zooming. All distances between the lens groups adjacent to each other change during zooming. The zoom lens satisfies predetermined conditional expressions.
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公开(公告)号：US10690894B2
公开(公告)日：2020-06-23
申请号：US16139116
申请日：2018-09-24
申请人： FUJIFILM Corporation
发明人： Takuya Tanaka , Motoari Ota
摘要： A zoom lens consists of, in order from an object side, a positive first lens group, a negative second lens group, a positive third lens group, a positive fourth lens group, and a positive fifth lens group. During zooming from a wide angle end to a telephoto end, the first lens group is fixed relative to an image surface, and distances between the respective lens groups change in predetermined manners. The second lens group consists of predetermined four lens components.
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6.发明授权公开(公告)号：US10269101B2
公开(公告)日：2019-04-23
申请号：US15783439
申请日：2017-10-13
申请人： FUJIFILM Corporation
发明人： Takuya Tanaka , Yousuke Naruse
摘要： A restoration processing unit performs a restoration process based on an optical transfer function of an optical system for a target image. The entire angle of view of the optical system is greater than 90 degrees. A light amount evaluation region of the optical system is a region in which a distance from the center of an image formation plane is not less than 80% of half of the length of a diagonal line of an imaging surface of an imaging element. When a first evaluation wavelength is used, the ratio of the amount of light in the light amount evaluation region to the amount of light in a region of the optical system corresponding to the center of the image formation plane is not less than 25%. When a second evaluation wavelength is used, the value of the MTF of the optical system acquired at half of the Nyquist frequency of the imaging element is not less than 15%.
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公开(公告)号：US10168514B2
公开(公告)日：2019-01-01
申请号：US15843254
申请日：2017-12-15
申请人： FUJIFILM Corporation
发明人： Masaru Yonezawa , Takuya Tanaka
IPC分类号： G02B15/14 , G02B15/167 , G02B15/20
摘要： The zoom lens consists of, in order from the object side, a first lens group that has a positive refractive power and remains stationary during zooming, a plurality of movable lens groups that move during zooming, and a final lens group that has a positive refractive power and remains stationary during zooming. The first lens group consists of, in order from the object side, a first lens group front group that has a negative refractive power and remains stationary during focusing, a first lens group intermediate group that has a positive refractive power and moves during focusing, and a first lens group rear group that has a positive refractive power. The first lens group front group has, successively in order from a position closest to the object side, a negative meniscus lens that is concave toward the image side and a negative lens.
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公开(公告)号：US09715086B2
公开(公告)日：2017-07-25
申请号：US14965879
申请日：2015-12-10
申请人： FUJIFILM Corporation
发明人： Takuya Tanaka
IPC分类号： G02B13/00
CPC分类号： G02B13/0045
摘要： An imaging lens, consisting essentially of six lenses, composed of in order from the object side, a first lens having a positive refractive power with a convex surface on the object side, a second lens having a negative refractive power, a third lens having a convex surface on the object side, a fourth lens having a positive refractive power, a fifth lens having a negative refractive power, and a sixth lens having a negative refractive power, in which predetermined conditional expressions are satisfied.
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公开(公告)号：US09304296B2
公开(公告)日：2016-04-05
申请号：US14230998
申请日：2014-03-31
申请人： FUJIFILM Corporation
发明人： Masato Kondo , Michio Cho , Kazumi Koike , Takuya Tanaka
CPC分类号： G02B13/0045 , G02B9/60 , G02B13/18
摘要： An imaging lens substantially consists of, in order from an object side, five lenses of a first lens that has a positive refractive power and has a meniscus shape which is concave toward an image side, a second lens that has a negative refractive power and has a meniscus shape which is concave toward the image side, a third lens that has a negative refractive power and is concave toward the object side, a fourth lens that has a positive refractive power and has a meniscus shape which is convex toward the image side, and a fifth lens that has a biconcave shape and has an aspheric shape which has at least one extreme point on an image side surface. Further, the imaging lens satisfies predetermined conditional expressions.
摘要翻译： 成像透镜基本上由物体侧依次包括具有正折光力并且具有朝向像侧凹入的弯月形状的第一透镜的五个透镜，具有负折光力并具有负折射光焦度的第二透镜 朝向图像侧凹陷的弯月形状，具有负折光力并且朝向物体侧凹陷的第三透镜，具有正折射光焦度并且具有向图像侧凸出的弯月形状的第四透镜， 以及第五透镜，其具有双凸形状并且具有在像侧表面上具有至少一个极限点的非球面形状。 此外，成像透镜满足预定条件表达式。
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公开(公告)号：US11125985B2
公开(公告)日：2021-09-21
申请号：US16826822
申请日：2020-03-23
申请人： FUJIFILM Corporation
发明人： Takuya Tanaka , Takuya Tanaka
摘要： The zoom lens consists of, in order from an object side, a positive first lens group, a negative second lens group, a third lens group, a positive fourth lens group, and a positive fifth lens group. During zooming, the second lens group, the third lens group, and the fourth lens group move. The second lens group has a negative lens and a cemented lens successively in order from a most object side to an image side. The cemented lens of the second lens group has a first negative lens and a first positive lens successively in order from an object side to an image side. A predetermined conditional expression for the first positive lens is satisfied.
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