公开(公告)号：US20160291298A1

公开(公告)日：2016-10-06

申请号：US15180390

申请日：2016-06-13

Applicant: OLYMPUS CORPORATION

Inventor： Kazuteru KAWAMURA ,  Kazuyuki IWASA

IPC: G02B15/08 ,  G03B13/32 ,  G03B7/20

CPC classification number: G02B15/08 ,  G02B9/14 ,  G02B9/28 ,  G02B13/00 ,  G03B3/02 ,  G03B7/20 ,  G03B13/32

Abstract: A plurality of imaging optical systems includes at least two imaging optical systems, and each imaging optical system includes an identical diaphragm member. Each imaging optical system includes in order from an object side, a front lens unit having a positive refractive power, a focusing lens unit having a negative refractive power, and a rear lens unit having a positive refractive power. The diaphragm member is disposed near the focusing lens unit. At the time of focusing, only the focusing lens unit moves on an optical axis. Each imaging optical system satisfies the following conditional expression (1), and the plurality of imaging optical systems satisfies the following conditional expressions (2) and (3). 0.5

Abstract translation: 这些成像光学系统包括具有不同焦距的两个成像光学系统。 每个成像光学系统设置有相同的隔膜构件，并且从物体侧依次设置具有正折光力的前侧透镜组（GF），具有负屈光力的聚焦透镜组（Fo） ，以及具有正折射力的后侧透镜组（GR）。 隔膜构件设置在聚焦透镜组（Fo）附近。 只有聚焦透镜组（Fo）沿光轴移动。 每个成像光学系统满足条件表达式（1），即0.5

公开(公告)号：US20190137739A1

公开(公告)日：2019-05-09

申请号：US16238260

申请日：2019-01-02

Applicant: OLYMPUS CORPORATION

Inventor： Kazuteru KAWAMURA ,  Takashi FUJIKURA

IPC: G02B13/02 ,  G02B27/64 ,  G02B13/00 ,  H04N5/232 ,  H04N5/225

Abstract: An image forming lens system includes an aperture stop, and an image-side lens unit group which is disposed on an image side of the aperture stop. The image-side lens unit group includes a first image-side lens unit having a negative refractive power, a second image-side lens unit having a positive refractive power, and a third image-side lens unit having a negative refractive power. Any one of the first image-side lens unit, the second image side lens unit, and the third image-side lens unit is a focusing lens unit which moves along the optical axis at the time of focusing, and the following conditional expression (1) is satisfied: 0.06

公开(公告)号：US20180172958A1

公开(公告)日：2018-06-21

申请号：US15812776

申请日：2017-11-14

Applicant: OLYMPUS CORPORATION

Inventor： Kazuteru KAWAMURA

IPC: G02B13/02 ,  G02B9/26 ,  G03B5/00

CPC classification number: G02B13/02 ,  G02B9/26 ,  G02B9/64 ,  G03B5/00

Abstract: An image forming lens system includes a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, and a third lens unit. The first lens unit includes a front-side lens unit having a positive refractive power and a rear-side lens unit in order from the object side. The second lens unit moves at a time of focusing. The third lens unit includes a positive lens element. Each lens element in the front-side lens unit is a lens element that satisfies following Conditional Expression (a). The rear-side lens unit includes a negative lens element and a positive lens element. The front-side lens unit includes a diffractive lens component having a diffractive lens surface. The diffractive lens component has a positive refractive power. Following Conditional Expression (1) is satisfied: −0.7≤f/fLens  (a) 0.015≤ΔGFGR/f≤0.25  (1).

公开(公告)号：US20170293121A1

公开(公告)日：2017-10-12

申请号：US15479673

申请日：2017-04-05

Applicant: OLYMPUS CORPORATION

Inventor： Kazuteru KAWAMURA

IPC: G02B15/16 ,  G02B15/163 ,  G02B27/00 ,  G02B27/64

CPC classification number: G02B15/16 ,  G02B15/163 ,  G02B15/173 ,  G02B27/0025 ,  G02B27/646

Abstract: A variable magnification optical system includes, sequentially from an object side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, a fourth lens unit, and a fifth lens unit having a positive refractive power, and each of the lens units makes a different movement relatively to a lens unit that is adjacently positioned at least at one of a time of changing magnification, a time of focusing, and a time of image stabilization.

公开(公告)号：US20170199358A1

公开(公告)日：2017-07-13

申请号：US15372328

申请日：2016-12-07

Applicant: OLYMPUS CORPORATION

Inventor： Kazuteru KAWAMURA

IPC: G02B13/02 ,  G03B5/00 ,  G03B13/32 ,  G02B27/64

CPC classification number: G02B13/02 ,  G02B27/646 ,  G03B5/00 ,  G03B13/32 ,  G03B2205/0007

Abstract: A telephoto lens includes a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, and a third lens unit, and the first lens unit includes a front-side lens unit having a positive refractive power and a rear-side lens unit, and the second lens unit moves at the time of focusing, and the third lens unit has a positive lens and a negative lens, and the front-side lens unit includes lenses positioned closer to the object side than a predetermined negative lens that satisfies Conditional Expression (a), and the rear-side lens unit has the predetermined negative lens and a positive lens, and Conditional Expressions (1A) and (14) are satisfied: 0.5≦|f/fLn|  (a), 0.015≦DGFGR/f≦0.25   (1A), and 0.19≦DGFairmax/DGF≦1.0   (14).

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。