公开(公告)号：US20160139386A1

公开(公告)日：2016-05-19

申请号：US14943550

申请日：2015-11-17

Applicant: OLYMPUS CORPORATION

Inventor： Masaru MOROOKA

IPC: G02B15/22

CPC classification number: G02B13/24

Abstract: This disclosure is directed to an inner focus macrolens. The inner focus macrolens can include sequentially from an object side, a first lens unit, an aperture stop, a second lens unit having a positive refractive power, a third lens unit having a negative refractive power and a fourth lens unit having a positive refractive power, wherein the first lens unit comprises a negative lens as the closest powered lens to the object side and a positive lens, the second lens unit comprises an object side negative lens as the closest powered lens to the object side and a positive lens, the third lens unit comprises a negative lens, and the fourth lens unit comprises a positive lens.

Abstract translation: 本公开涉及内焦点。 内焦点可以从物体侧依次包括第一透镜单元孔径光阑，具有正屈光力的第二透镜单元，具有负屈光力的第三透镜单元和具有正折光力的第四透镜单元 其中，所述第一透镜单元包括作为物体侧的最靠近的有源透镜的负透镜和正透镜，所述第二透镜单元包括作为物体侧的最靠近的有源透镜的物体侧负透镜和正透镜，第三透镜​​单元 透镜单元包括负透镜，第四透镜单元包括正透镜。

公开(公告)号：US20180031813A1

公开(公告)日：2018-02-01

申请号：US15494687

申请日：2017-04-24

Applicant: OLYMPUS CORPORATION

Inventor： Masaru MOROOKA ,  Kenichi NAGASAWA

IPC: G02B15/22 ,  G02B21/36 ,  G02B21/24 ,  G02B23/24 ,  A61B1/04 ,  H04N5/232 ,  G01J1/08 ,  A61B1/00 ,  A61B1/005 ,  G03B21/14 ,  H04N5/225

CPC classification number: G02B15/22 ,  A61B1/00039 ,  A61B1/00112 ,  A61B1/00188 ,  A61B1/005 ,  A61B1/04 ,  G01J1/08 ,  G02B15/177 ,  G02B21/241 ,  G02B21/361 ,  G02B23/2438 ,  G02B23/2469 ,  G03B21/142 ,  G03B33/12 ,  H04N5/2254 ,  H04N5/2256 ,  H04N5/23293 ,  H04N9/3141 ,  H04N2005/2255

Abstract: A single focal length lens includes a first lens unit having a negative refractive power, an aperture stop, a second lens unit having a positive refractive power, a third lens unit having a negative refractive power, and a fourth lens unit having a positive refractive power, wherein a position of the first lens unit, a position of the second lens unit, and a position of the fourth lens unit are fixed all the time, and at the time of focusing from an object at infinity to an object at a short distance, the third lens unit moves toward the image side, and the following conditional expressions (1), (2), and (3) are satisfied: −5

公开(公告)号：US20180210179A1

公开(公告)日：2018-07-26

申请号：US15927152

申请日：2018-03-21

Applicant: OLYMPUS CORPORATION

Inventor： Kazuteru KAWAMURA ,  Takashi FUJIKURA ,  Kenichi NAGASAWA ,  Masaru MOROOKA

IPC: G02B15/177 ,  G02B5/00 ,  G02B27/00 ,  G02B15/20

CPC classification number: G02B15/177 ,  G02B5/005 ,  G02B15/20 ,  G02B27/0025

Abstract: A zoom lens includes a front unit having a negative refractive power; and a rear unit having a positive refractive power, which includes an aperture stop. The front unit includes a first negative refractive power lens, a second negative refractive power lens, and a third positive refractive power lens. The first lens is nearest to an object, and has a meniscus shape with a convex surface directed toward the object side, and the second lens is on an image side of the first lens, and has a meniscus shape with a convex surface directed toward the object side. The rear unit includes a first lens unit A and a second lens unit B, wherein when zooming from a wide angle end to a telephoto end, a distance between the front unit and the rear unit narrows, and a distance between the first lens unit A and the second lens unit B changes. The first lens unit A includes a first sub-lens unit having a positive refractive power, the aperture stop, and a second sub-lens unit. The second sub-lens unit includes a focusing lens unit, and when focusing, only the focusing lens unit moves along an optical axis, and when zooming, a distance between the first sub-lens unit and the second sub-lens unit changes.

公开(公告)号：US20170068079A1

公开(公告)日：2017-03-09

申请号：US15355951

申请日：2016-11-18

Applicant: OLYMPUS CORPORATION

Inventor： Kazuteru KAWAMURA ,  Takashi FUJIKURA ,  Kenichi NAGASAWA ,  Masaru MOROOKA

IPC: G02B15/177 ,  G02B5/00 ,  G02B27/00

CPC classification number: G02B15/177 ,  G02B5/005 ,  G02B15/20 ,  G02B27/0025

Abstract: A zoom lens includes a front unit having a negative refractive power and a rear unit having a positive refractive power, which includes an aperture stop, and the front unit includes a first lens having a negative refractive power, and the first lens has a meniscus shape of which a convex surface is directed toward the object side, and the rear unit includes a first lens unit A and a second lens unit B, and at the time of zooming from a wide angle end to a telephoto end, a distance between the front unit and the rear unit changes.

Abstract translation: 变焦透镜包括具有负屈光力的前单元和具有正屈光力的后单元，其包括孔径光阑，并且前单元包括具有负屈光力的第一透镜，并且第一透镜具有弯月形状 其中凸面指向物体侧，后部单元包括第一透镜单元A和第二透镜单元B，并且在从广角端到远摄端的变焦时，前方的距离 单元和后置单元发生变化。