公开(公告)号：US20210333525A1

公开(公告)日：2021-10-28

申请号：US17098948

申请日：2020-11-16

申请人： TAMRON CO., LTD.

发明人： Takahiro MITSUHASHI

IPC分类号： G02B15/14 ,  G02B15/16

摘要： A zoom lens includes a first lens group having a positive refractive power, a second lens group having a negative refractive power, and a rear group having a positive refractive power as a whole in order from an object side. The zoom lens has specific optical characteristics indicated by two expressions.

公开(公告)号：US11143852B2

公开(公告)日：2021-10-12

申请号：US16555273

申请日：2019-08-29

申请人： TAMRON CO., LTD.

发明人： Hisayuki Yamanaka

IPC分类号： G02B15/14 ,  G02B15/173 ,  G02B13/18 ,  G02B13/00 ,  G02B15/20 ,  G02B27/00 ,  G02B13/06 ,  H04N5/232 ,  H04N5/335 ,  G02B7/10 ,  G02B5/00

摘要： To attain the above-described objective, a zoom lens according to the present invention includes sequentially from an object side, a front group which includes at least three lens groups and has positive refractive power as a whole, and a lens group disposed on an image side of the front group, a magnification is changed by a change of a distance on an optical axis between adjacent lens groups, the lens group includes sequentially from an image side, a lens component, a lens component, and a lens component, the lens group is moved to an object side at a time of changing a magnification from a wide-angle end to a telephoto end, focusing is obtained by movement of a part of lens groups in the front group along an optical axis, and a predetermined condition expression is satisfied.

公开(公告)号：US20200285041A1

公开(公告)日：2020-09-10

申请号：US16553940

申请日：2019-08-28

申请人： TAMRON CO., LTD.

发明人： Yasuhiko OBIKANE ,  Yoshito IWASAWA ,  Yuichi IMAMIYA ,  Yuri KOYAMA

IPC分类号： G02B23/24 ,  A61B1/05 ,  G02B13/00 ,  H04N5/225

摘要： 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.

公开(公告)号：US10721398B2

公开(公告)日：2020-07-21

申请号：US15838787

申请日：2017-12-12

申请人： Tamron Co., Ltd.

发明人： Koutarou Joujiki ,  Yasuhiko Obikane

IPC分类号： H04N5/232 ,  G02B23/26 ,  G02B13/18 ,  G02B7/02 ,  G02B17/02 ,  H04N5/225 ,  G02B9/62 ,  G02B13/00

摘要： 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.

公开(公告)号：US20200209598A1

公开(公告)日：2020-07-02

申请号：US16552431

申请日：2019-08-27

申请人： TAMRON CO., LTD.

发明人： Masaki SATO

IPC分类号： G02B15/14

摘要： Provided is an optical system and an imaging apparatus provided with the optical system. The optical system includes: a first lens having negative refractive power; a second lens having negative refractive power; a third lens having positive refractive power; and a fourth lens having positive refractive power, the first lens, the second lens, the third lens, and the fourth lens being disposed in this order from an object side. The optical system satisfies a predetermined condition relating to the focal length of the optical system and the distance on the optical axis between an exit pupil and an imaging plane in the optical system.

公开(公告)号：US09995916B2

公开(公告)日：2018-06-12

申请号：US15587480

申请日：2017-05-05

申请人： Tamron Co., Ltd.

发明人： Toshiya Segawa ,  Lai Wei

IPC分类号： G02B15/14 ,  G02B13/00 ,  G02B15/16 ,  G02B15/173

CPC分类号： G02B13/009 ,  G02B15/16 ,  G02B15/173

摘要： 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.

公开(公告)号：US20170336600A1

公开(公告)日：2017-11-23

申请号：US15587480

申请日：2017-05-05

申请人： Tamron Co., Ltd.

发明人： Toshiya SEGAWA ,  Lai Wei

IPC分类号： G02B13/00 ,  G02B15/16

CPC分类号： G02B13/009 ,  G02B15/16 ,  G02B15/173

摘要： 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.

公开(公告)号：USD794107S1

公开(公告)日：2017-08-08

申请号：US29537994

申请日：2015-08-31

申请人： TAMRON CO., LTD.

设计人： Kinya Tagawa ,  Shota Matsuda

公开(公告)号：US20170082840A1

公开(公告)日：2017-03-23

申请号：US15364588

申请日：2016-11-30

申请人： TAMRON CO., LTD.

发明人： Yoshito IWASAWA ,  Jun Takahashi

IPC分类号： G02B15/173 ,  G02B27/00 ,  G02B5/00 ,  G02B27/64

CPC分类号： G02B15/173 ,  G02B5/005 ,  G02B27/0025 ,  G02B27/646

摘要： 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.

公开(公告)号：US09563041B2

公开(公告)日：2017-02-07

申请号：US14488777

申请日：2014-09-17

申请人： Tamron Co., Ltd.

发明人： Koji Kawaguchi ,  Yuko Watanabe ,  Shingo Fuse ,  Xiang Yu

IPC分类号： G02B13/14 ,  G02B13/04 ,  G02B9/10

CPC分类号： G02B13/14 ,  G02B9/10 ,  G02B13/04

摘要： 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.

摘要翻译： 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。