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公开(公告)号：US20190049706A1
公开(公告)日：2019-02-14
申请号：US15962509
申请日：2018-04-25
Applicant: Tamron Co., Ltd.
Inventor： Keisuke Okada
Abstract: An object of the present invention is to provide a zoom lens that can perform favorable correction of chromatic aberration in the entire zoom range, and can have higher performance and a smaller size than conventional ones; and an imaging apparatus including the zoom lens. To achieve the object, provided are a zoom lens and an imaging apparatus including the zoom lens. The zoom lens includes, in order from an object side: a positive first lens group G1; a negative second lens group G2; and a GR group including one or more lens groups. In the zoom lens, changing focal length is performed by varying intervals between the lens groups. The GR group includes convex lenses GpH and GpL satisfying predetermined conditional expressions. The convex lens GpH is the positive lens which is arranged second position or after from the object side in positive lenses in the GR group.
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公开(公告)号：US09995916B2
公开(公告)日：2018-06-12
申请号：US15587480
申请日：2017-05-05
Applicant: Tamron Co., Ltd.
Inventor： Toshiya Segawa , Lai Wei
IPC: G02B15/14 , G02B13/00 , G02B15/16 , G02B15/173
CPC classification number: G02B13/009 , G02B15/16 , G02B15/173
Abstract: A variable magnification optical system according to the present invention includes, in order from an object side: a first lens group having positive refractive power, a second lens group having negative refractive power, a third lens group having positive refractive power, a fourth lens group having positive refractive power, and a following lens group, wherein at least the second lens group is moved so 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 when zooming from a wide angle end to a telephoto end, and a predetermined conditional expression is satisfied.
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公开(公告)号：US20170336600A1
公开(公告)日：2017-11-23
申请号：US15587480
申请日：2017-05-05
Applicant: Tamron Co., Ltd.
Inventor： Toshiya SEGAWA , Lai Wei
CPC classification number: G02B13/009 , G02B15/16 , G02B15/173
Abstract: A variable magnification optical system according to the present invention includes, in order from an object side: a first lens group having positive refractive power, a second lens group having negative refractive power, a third lens group having positive refractive power, a fourth lens group having positive refractive power, and a following lens group, wherein at least the second lens group is moved so 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 when zooming from a wide angle end to a telephoto end, and a predetermined conditional expression is satisfied.
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公开(公告)号：USD794107S1
公开(公告)日：2017-08-08
申请号：US29537994
申请日：2015-08-31
Applicant: TAMRON CO., LTD.
Designer： Kinya Tagawa , Shota Matsuda
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公开(公告)号：US20170150034A1
公开(公告)日：2017-05-25
申请号：US15124531
申请日：2015-03-10
Applicant: Tamron Co., Ltd.
Inventor： Yuichi Ueyama
CPC classification number: H04N5/23212 , G02B7/028 , G02B7/09 , G02B7/36 , G02B13/14 , G03B3/10 , H04N5/33
Abstract: A lens unit and a rear-side focus adjustment system for infrared cameras capable of performing rear-side focus adjustments even when the position of the detection surface of an infrared sensor is unknown in an infrared camera. The lens unit is detachably mounted on a camera body that detects infrared light with an infrared sensor and converts the infrared light to an image signal, the lens unit including a focus adjustment lens and controller. The controller calculates a rear-side focus adjustment amount for causing a rear-side focus position to correspond to the detection surface based on an error between an actually measured focused position of the focus adjustment lens relative to an object at a particular object distance and a theoretically focused position of the focus adjustment lens calculated based on the object distance and controls the position of the focus adjustment lens based on the rear-side focus adjustment amount.
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Patent Agency Ranking
公开(公告)号：US20170082840A1
公开(公告)日：2017-03-23
申请号：US15364588
申请日：2016-11-30
Applicant: TAMRON CO., LTD.
Inventor： Yoshito IWASAWA , Jun Takahashi
IPC: G02B15/173 , G02B27/00 , G02B5/00 , G02B27/64
CPC classification number: G02B15/173 , G02B5/005 , G02B27/0025 , G02B27/646
Abstract: A zoom lens has in order from the object side, at least a foremost, first lens group having positive refractive power, a succeeding, second lens group having negative refractive power, a third lens group having positive refractive power, and a rearmost lens group having negative refractive power. The zoom lens meets requirements as defined in formulas regarding a displacement of the first lens group, a focal length of the zoom lens at the wide-angle end, a focal length of the zoom lens at the telephoto end, a focal length of the first lens group, and a focal length of the third lens group.
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公开(公告)号：US09563041B2
公开(公告)日：2017-02-07
申请号：US14488777
申请日：2014-09-17
Applicant: Tamron Co., Ltd.
Inventor： Koji Kawaguchi , Yuko Watanabe , Shingo Fuse , Xiang Yu
Abstract: An object of the present invention is to provide an optical system for an infrared ray which can provide a bright image, and can be applied to fixed focal length lenses among wide-angle to medium-telephoto. To achieve the object, the optical system for an infrared ray is constituted by a first lens having negative refractive power and a second lens having positive refractive power, these are arranged sequentially from an object side, wherein both the first lens and the second lens are made of an infrared transmitting material that transmits a light beam in an infrared wavelength range of 3 micron-meters or more to 14 micron-meters or less, and at least one of the lenses is made of an infrared transmitting material excluding germanium.
Abstract translation: 本发明的目的是提供一种能够提供亮度图像的红外线光学系统，并且可以应用于广角到中等长焦的固定焦距透镜。 为了实现该目的，用于红外线的光学系统由具有负折光力的第一透镜和具有正折光力的第二透镜构成，它们从物体侧依次布置，其中第一透镜和第二透镜都是 由红外线透射材料制成，透射光束在3微米以上至14微米以下的红外波长范围内，透镜中的至少一个由不含锗的红外线透射材料构成。
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公开(公告)号：US09507169B2
公开(公告)日：2016-11-29
申请号：US14284731
申请日：2014-05-22
Applicant: Tamron Co., Ltd.
Inventor： Yasuhiko Obikane
IPC: G02B27/64 , G02B15/14 , G02B15/22 , G02B15/173
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.
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， 变焦镜头满足条件表达式。
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公开(公告)号：US20160170179A1
公开(公告)日：2016-06-16
申请号：US14830141
申请日：2015-08-19
Applicant: TAMRON CO., LTD.
Inventor： Kotaro JOJIKI
CPC classification number: G02B13/0045 , G02B7/028 , G02B9/60 , G02B27/0075
Abstract: An imaging optical system includes sequentially from an object side a front group configured to include a positive lens disposed at a position nearest a diaphragm; the diaphragm; and a rear group configured to include a negative lens disposed at a position nearest the diaphragm. The imaging optical system satisfies a conditional expression (1) 0.27≦|θ3/θ2|≦1.80, where θ3 represents temperature-dependent variation of relative refractive index for d-line of the negative lens and θ2 represents temperature-dependent variation of relative refractive index for d-line of the positive lens.
Abstract translation: 成像光学系统从物体侧依次包括被配置为包括设置在最靠近光阑的位置处的正透镜的前组; 隔膜; 以及后组，被配置为包括设置在最靠近隔膜的位置处的负透镜。 成像光学系统满足条件表达式（1）0.27＆nlE; | | thetas; 3 /＆Thetas; 2 |＆nlE; 1.80，其中＆3;表示负透镜的d线相对折射率的温度相关变化和 ; 2表示正透镜的d线的相对折射率的温度依赖性变化。
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公开(公告)号：US20150381863A1
公开(公告)日：2015-12-31
申请号：US14751344
申请日：2015-06-26
Applicant: Tamron Co., Ltd.
Inventor： Keisuke Okada , Shingo Abe
CPC classification number: G02B27/646 , G02B9/64 , G02B13/16 , H04N5/23209 , H04N5/23248 , H04N5/23287
Abstract: An optical system including: a first lens group Gf; a vibration control lens group Gvc; and a third lens group Gr, the first lens group Gf, the vibration control lens group Gvc, and the third lens group Gr being provided in order from an object side. The third lens group Gr has at least one lens having negative refractive power, and specified conditional expressions are satisfied.
Abstract translation: 一种光学系统，包括：第一透镜组Gf; 振动控制透镜组Gvc; 第三透镜组Gr，第一透镜组Gf，振动控制透镜组Gvc和第三透镜组Gr从物体侧开始依次设置。 第三透镜组Gr具有至少一个具有负屈光力的透镜，并且满足特定的条件表达式。
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