公开(公告)号：US20200285041A1

公开(公告)日：2020-09-10

申请号：US16553940

申请日：2019-08-28

Applicant: TAMRON CO., LTD.

Inventor： Yasuhiko OBIKANE ,  Yoshito IWASAWA ,  Yuichi IMAMIYA ,  Yuri KOYAMA

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

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.

公开(公告)号：US20210266457A1

公开(公告)日：2021-08-26

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

IPC: H04N5/232 ,  G02B9/64

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.

公开(公告)号：US20200271896A1

公开(公告)日：2020-08-27

申请号：US16594643

申请日：2019-10-07

Applicant: TAMRON CO., LTD.

Inventor： Takayuki NODA ,  Yasuhiko OBIKANE

IPC: G02B9/60 ,  G02B13/00

Abstract: An imaging optical system includes, in order from an object side, a first lens having negative refractive power, a second lens having positive refractive power, a third lens having positive refractive power, a fourth lens and a fifth lens, with the fourth lens and the fifth lens not cemented, in which a predetermined conditional expressions is satisfied.

公开(公告)号：US20190235210A1

公开(公告)日：2019-08-01

申请号：US16140762

申请日：2018-09-25

Applicant: TAMRON CO., LTD.

Inventor： Seigo NAKAI ,  Yasuhiko OBIKANE

IPC: G02B9/64 ,  G02B27/00 ,  G02B13/06

Abstract: An imaging lens according to the present invention includes a negative first lens, a meniscus-shaped negative second lens having a concave surface facing to an object side, a positive third lens, a positive fourth lens having a convex surface on the object side, a positive fifth lens, a negative sixth lens, and a positive seventh lens arranged in order from the object side. Furthermore, an imaging device according to the present invention includes the imaging lens.

公开(公告)号：US20160124200A1

公开(公告)日：2016-05-05

申请号：US14829976

申请日：2015-08-19

Applicant: TAMRON CO., LTD.

Inventor： Yasuhiko OBIKANE ,  Koichiro YOKOTA

IPC: G02B15/20 ,  G02B27/00 ,  H04N5/225 ,  H04N5/232 ,  G02B13/00 ,  G02B27/64 ,  G02B15/177

CPC classification number: G02B15/20 ,  G02B13/009 ,  G02B15/177 ,  G02B27/0025 ,  G02B27/646

Abstract: A zoom lens includes sequentially from an object side a first lens group having a negative refractive power; a second lens group having a positive refractive power; a third lens group having a negative refractive power; and a fourth lens group having a negative refractive power. The first lens group, the second lens group, the third lens group, and the fourth lens group are moved along an optical axis to zoom from a wide angle end to telephoto end and such that an interval between the first lens group and the second lens group decreases and distances that the second lens group and the fourth lens group are moved are equivalent. The third lens group is moved along the optical axis, toward an image side to focus from a focused state at infinity to a focused state at a minimum object distance.

Abstract translation: 变焦透镜从物体侧依次包括具有负屈光力的第一透镜组; 具有正屈光力的第二透镜组; 具有负屈光力的第三透镜组; 以及具有负屈光力的第四透镜组。 第一透镜组，第二透镜组，第三透镜​​组和第四透镜组沿着光轴移动以从广角端到远摄端变焦，并且使得第一透镜组和第二透镜组之间的间隔 组减少，第二透镜组和第四透镜组移动的距离相等。 第三透镜组沿着光轴朝向图像侧移动，以在无限远的聚焦状态下以最小对象距离聚焦到聚焦状态。