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公开(公告)号：US11229349B2
公开(公告)日：2022-01-25
申请号：US16495182
申请日：2017-10-11
Applicant: Tamron Co., Ltd.
Inventor： Yasuhiko Obikane
Abstract: A variable magnification optical system capable of realizing a high-resolution observation image display system that can arbitrarily change an observation field of view without changing a working distance of an observation optical system while keeping the observation optical system small in size and an imaging apparatus including the variable magnification optical system.
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公开(公告)号：US11022789B2
公开(公告)日：2021-06-01
申请号：US16553940
申请日：2019-08-28
Applicant: TAMRON CO., LTD.
Inventor： Yasuhiko Obikane , Yoshito Iwasawa , Yuichi Imamiya , Yuri Koyama
Abstract: An observation imaging apparatus includes an insertion unit, an imaging lens, and an image sensor. The imaging lens is disposed in such a manner that an axial principal ray of an observation subject side surface of a lens is tilted with respect to a normal line passing through the center of gravity of a section of the insertion unit, the section passing through the center of an effective imaging range of the image sensor and having the smallest area. A point on the axial principal ray at which the distance between the normal line and the axial principal ray is smallest is located on the image side relative to the observation subject side surface of the lens and on the observation subject side relative to the image sensor. The observation imaging apparatus satisfies a predetermined conditional expression.
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公开(公告)号：US20150378137A1
公开(公告)日：2015-12-31
申请号：US14506398
申请日：2014-10-03
Applicant: Tamron Co., Ltd.
Inventor： Yasuhiko Obikane
CPC classification number: G02B13/24 , G02B9/64 , G02B13/02 , G02B13/18 , G02B27/0025
Abstract: A telephoto-type imaging lens for short-distance imaging which realizes well focused image with a simple structure through the miniaturization and weight reduction of a focusing lens group, reduction of the load on a drive system for focusing and compact structure of the entire optical system; and an imaging device. The imaging lens includes a first lens group having positive refracting power, a second lens group having negative refracting power and a third lens group having positive refracting power are disposed in order from the object side, wherein at least one positive lens constitutes the second lens group, the first lens group and the third lens group are fixed and the second lens group moves to a focusing side in focusing from infinity to a close object.
Abstract translation: 一种用于短距离成像的长焦型成像透镜，其通过聚焦透镜组的小型化和重量减轻实现了具有简单结构的良好聚焦图像，减少了用于聚焦的驱动系统上的负载以及整个光学系统的紧凑结构 ; 和成像装置。 成像透镜包括具有正折射率的第一透镜组，具有负折射力的第二透镜组和具有正折射率的第三透镜组从物体侧依次布置，其中至少一个正透镜构成第二透镜组 第一透镜组和第三透镜组是固定的，并且第二透镜组移动到聚焦侧，从无穷远聚焦到闭合物体。
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Patent Agency Ranking
14.发明授权公开(公告)号：US11218631B2
公开(公告)日：2022-01-04
申请号：US17049454
申请日：2019-08-21
Applicant: TAMRON CO., LTD.
Inventor： Yoshito Iwasawa , Yasuhiko Obikane , Hisashi Kitano , Yuri Koyama , Yuichi Imamiya
Abstract: To provide an image-capturing system capable of maintaining high analysis accuracy while reducing the amount of data related to image acquisition with a simple method. In order to achieve the object, the image-capturing system includes an image-capturing device configured to acquire image data of a subject, and an image-capturing control device configured to control image acquisition by the image-capturing device. The image-capturing control device includes a difference extraction means configured to extract difference data on the basis of any two image data items acquired by the image-capturing device, a change amount extraction means configured to extract change amount data on the basis of any two difference data items extracted by the difference extraction means, and a condition change means configured to change an image acquisition condition in the image-capturing device on the basis of the change amount data extracted by the change amount extraction means.
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公开(公告)号：US20180213151A1
公开(公告)日：2018-07-26
申请号：US15838787
申请日：2017-12-12
Applicant: Tamron Co., Ltd.
Inventor： Koutarou Joujiki , Yasuhiko Obikane
Abstract: An imaging optical system according to the present invention is the imaging optical system composed by arranging a front group, a stop, and a rear group in order from an object side, a lens arranged closest to the stop in the front group is a positive lens, a lens arranged closest to the stop in the rear group is also a positive lens, and specific conditional expressions are satisfied. In addition, an imaging apparatus according to the present invention includes the imaging optical system.
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公开(公告)号：US20170052344A1
公开(公告)日：2017-02-23
申请号：US15235699
申请日：2016-08-12
Applicant: TAMRON CO., LTD.
Inventor： Yasuhiko Obikane
CPC classification number: G02B13/009 , G02B15/16 , G02B15/163 , G02B15/20 , G02B27/0025 , G02B27/646
Abstract: The present invention provides a zoom lens that is compact in general and has an F-number to implement brightness even in the telephoto end side, and an imaging apparatus equipped with the zoom lens. The zoom lens includes, in order from an object side: a first lens group having positive refractive power; a second lens group having positive refractive power; a third lens group having negative refractive power; and a fourth lens group having positive refractive power. At the time of zooming from the wide-angle end state to the telephoto end state, the third lens group moves so that the distance between the second lens group and the third lens group increases, and the distance between the third lens group and the fourth lens group decreases.
Abstract translation: 本发明提供一种致密的变焦透镜，即使在望远端侧也具有实现亮度的F数，以及配备有变焦透镜的成像装置。 变焦透镜从物体侧依次包括具有正折光力的第一透镜组; 具有正屈光力的第二透镜组; 具有负屈光力的第三透镜组; 以及具有正屈光力的第四透镜组。 在从广角端状态变焦到望远端状态时，第三透镜组移动，使得第二透镜组和第三透镜组之间的距离增加，并且第三透镜组与第四透镜组之间的距离 镜头组减少。
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公开(公告)号：US08908297B2
公开(公告)日：2014-12-09
申请号：US14063691
申请日：2013-10-25
Applicant: Tamron Co., Ltd.
Inventor： Nobuyuki Adachi , Yasuhiko Obikane , Takahiko Sakai
CPC classification number: G02B13/0015 , G02B9/12 , G02B9/62 , G02B9/64 , G02B13/00
Abstract: A fixed focus lens comprising, sequentially from an object side, a first lens group having a positive refractive power; a second lens group having a negative refractive power; and a third lens group having a positive refractive power. The first lens group includes an aperture stop. The second lens group is configured by a single lens element. During focusing, the second lens group moves along an optical axis and the first lens group and the third lens group are fixed with respect to an imaging plane.
Abstract translation: 一种固定聚焦透镜，其从物体侧依次具有正屈光力的第一透镜组; 具有负屈光力的第二透镜组; 以及具有正屈光力的第三透镜组。 第一透镜组包括孔径光阑。 第二透镜组由单个透镜元件构成。 在聚焦期间，第二透镜组沿光轴移动，第一透镜组和第三透镜组相对于成像平面固定。
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公开(公告)号：US20140347545A1
公开(公告)日：2014-11-27
申请号：US14284731
申请日：2014-05-22
Applicant: Tamron Co., Ltd.
Inventor： Yasuhiko Obikane
CPC classification number: G02B27/646 , G02B15/14 , G02B15/173 , G02B15/22
Abstract: A zoom lens includes a first lens group having positive refracting power, a second lens group having negative refracting power, a third lens group having positive refracting power, a fourth lens group having negative refracting power and a fifth lens group having negative refracting power in order from an object side, in which the lens groups move in magnification change from a wide angle end to a telephoto end such that a gap between the first lens group and the second lens group increases and a gap between the second lens group and the third lens group decreases, a negative lens group disposed closer to an image focusing side than a diaphragm among all lens groups is set as a focusing lens group, and the focusing lens group moves toward the image focusing side at focusing from infinity to a close object, the zoom lens satisfies a conditional expression, the fifth lens group includes at least a single lens block of a meniscus shape provided with a concave surface at an object side, the single lens block of the meniscus shape has a negative focal distance and satisfies a different conditional expression.
Abstract translation: 变焦透镜包括具有正折射率的第一透镜组，具有负折射力的第二透镜组，具有正折射率的第三透镜组，具有负折射光焦度的第四透镜组和具有负折射光焦度的第五透镜组，具有负折射力的第五透镜组 从物体侧起，透镜组从广角端到远摄端的放大变化，使得第一透镜组和第二透镜组之间的间隙增加，并且第二透镜组和第三透镜之间的间隙 组减小，将设置在所有透镜组中的比聚光侧更靠近图像聚焦侧的负透镜组设置为聚焦透镜组，并且聚焦透镜组在从无穷远到近距离物体聚焦时朝向图像聚焦侧移动， 变焦透镜满足条件表达式，第五透镜组至少包括在物体侧设置有凹面的弯液面的单个透镜块，th 弯月面形状的单透镜块具有负焦距并满足不同的条件表达式。
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