公开(公告)号：US20190196157A1

公开(公告)日：2019-06-27

申请号：US16231522

申请日：2018-12-23

Applicant: OLYMPUS CORPORATION

Inventor： Kazuteru KAWAMURA ,  Yasuharu YAMADA ,  Toyoki KON ,  Yuki KUBOTA

IPC: G02B13/02 ,  G02B13/06 ,  G02B27/00 ,  G02B7/04

CPC classification number: G02B13/02 ,  G02B7/04 ,  G02B13/06 ,  G02B27/0025

Abstract: A zoom optical system includes a front-side lens unit, an intermediate lens unit, and a rear-side lens unit. The front-side lens unit includes a first front unit and a second front unit, and a distance between the first front unit and the second front unit is wider at a telephoto end than at a wide angle end. The intermediate lens unit includes a first intermediate unit and a second intermediate unit, and a distance between the first intermediate unit and the second intermediate unit is narrower at the telephoto end than at the wide angle end. A distance between the second intermediate unit and a lens unit adjacent to the second intermediate unit varies. The second intermediate unit moves at the time of focusing, and the following conditional expressions (1) and (2) are satisfied: 0.9≤LTLT/LTLW≤1.17  (1) 4.2≤KMBT≤20.0  (2).

公开(公告)号：US20170123193A1

公开(公告)日：2017-05-04

申请号：US15340434

申请日：2016-11-01

Applicant: OLYMPUS CORPORATION

Inventor： Tetsuya YANAI ,  Toyoki KON ,  Daichi MURAKAMI ,  Yuki KUBOTA

IPC: G02B15/173 ,  G02B5/00 ,  G02B27/00 ,  G02B15/20

CPC classification number: G02B15/173 ,  G02B5/005 ,  G02B15/20 ,  G02B27/0025

Abstract: A zoom lens includes, in order from the object side, a first lens unit having a positive focal length, a second lens unit having a negative focal length, a third lens unit having a positive focal length, a fourth lens unit having a negative focal length, and a fifth lens unit having a positive focal length, wherein following Conditional Expressions (1) and (2) are satisfied: 0.3≦D34W/D45W≦1  (1), and 0.2≦(D34W/D45W)/(D34T/D45T)≦0.6  (2).

公开(公告)号：US20200241388A1

公开(公告)日：2020-07-30

申请号：US16259897

申请日：2019-01-28

Applicant: OLYMPUS CORPORATION

Inventor： Akiko MIYAKE ,  Yuki KUBOTA

IPC: G03B13/36 ,  G03B5/04 ,  G03B5/02 ,  G02B7/09 ,  G02B9/64 ,  H04N5/225

Abstract: A macro lens includes an object-side lens unit having a positive refractive power, a first focusing lens unit having a negative refractive power, a second focusing lens unit having a positive refractive power, an aperture stop, an intermediate lens unit which includes a lens component having a positive refractive power, and a wobbling lens unit. The aperture stop and the intermediate lens unit are disposed between the first focusing lens unit and the second focusing lens unit, the aperture stop is adjacent to the lens component having a positive refractive power, and the following conditional expressions (1), (2), and (3) are satisfied: 2