公开(公告)号：US20140022647A1

公开(公告)日：2014-01-23

申请号：US14034544

申请日：2013-09-23

Applicant: OLYMPUS CORPORATION ,  OLYMPUS IMAGING CORP.

Inventor： Yasuji OGATA ,  Yasuharu YAMADA ,  Toshio TAKAHASHI ,  Toyoki KON

IPC: G02B13/04

CPC classification number: G02B13/04 ,  G02B15/173 ,  G02B15/177

Abstract: The invention provides a zoom lens, characterized by comprising, a zoom lens, which comprises, in order from an object side thereof: a first lens group of negative refracting power, a second lens group of positive refracting power, a third lens group of negative refracting power, and a fourth lens group of positive refracting power, wherein: upon zooming from a wide-angle end to a telephoto end of the zoom lens, a separation between the respective lens groups changes, upon focusing from a focusing-on-infinity state to a close-range focusing state, the third lens group moves in an optical axis direction, and the conditions (1) and (2) are satisfied at the wide-angle end.

Abstract translation: 本发明提供一种变焦透镜，其特征在于包括：变焦透镜，其从物体侧依次包括：负折射力的第一透镜组，正折射率的第二透镜组，负折射率的第三透镜组 折射力的第四透镜组和正折射率的第四透镜组，其中：在从变焦透镜的广角端到望远端变焦时，各个透镜组之间的间隔在聚焦于无限远时变化 状态到近距离聚焦状态，第三透镜​​组沿光轴方向移动，并且在广角端处满足条件（1）和（2）。

公开(公告)号：US20140185148A1

公开(公告)日：2014-07-03

申请号：US14140346

申请日：2013-12-24

Applicant: OLYMPUS IMAGING CORP.

Inventor： Hirohiko KIMATA ,  Yasuharu YAMADA ,  Kenichi NAGASAWA ,  Hiroshi KODAMA ,  Toshio TAKAHASHI ,  Kento KOKUBU

IPC: G02B15/22

CPC classification number: G02B15/22 ,  G02B15/14 ,  G02B15/173 ,  G02B15/177

Abstract: In a zoom lens of a fixed total length, at the time of changing the magnification from the wide-angle end toward the telephoto end, the first lens group is anchored while the second lens group is moved, and the third and fourth lens groups are moved so as to be located at the object side of the telephoto end relative to the wide-angle end, such that: the interval between the second and third lens groups is decreased at the telephoto end relative to the wide-angle end; the interval between the third and fourth lens groups is increased at the telephoto end relative to the wide-angle end; and the interval between the fourth and fifth lens groups is increased at the telephoto end relative to the wide-angle end, and at the time of focusing a near object point from a remote object point, the second lens group is moved.

Abstract translation: 在固定的总长度的变焦透镜中，在从广角端向望远端改变放大倍数时，第一透镜组在第二透镜组移动的同时被固定，第三和第四透镜组是 相对于广角端部位于长焦端的物体侧，使得第二透镜组和第三透镜组之间的间隔在望远端相对于广角端减小; 第三透镜组和第四透镜组之间的间隔在望远端相对于广角端增加; 并且第四透镜组和第五透镜组之间的间隔在望远端相对于广角端增加，并且在从远程对象点聚焦近物点时，第二透镜组移动。

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：US20190033615A1

公开(公告)日：2019-01-31

申请号：US16149345

申请日：2018-10-02

Applicant: OLYMPUS CORPORATION

Inventor： Kazuteru KAWAMURA ,  Yasuharu YAMADA

IPC: G02B27/64 ,  G02B15/173 ,  G02B9/60 ,  G02B15/16

CPC classification number: G02B27/646 ,  G02B9/60 ,  G02B15/16 ,  G02B15/173

Abstract: A zoom lens includes in order 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, and a first lens component in the predetermined lens unit moves perpendicularly with respect to an optical axis and is fixed at the time of zooming, and a second lens component is disposed, leaving an air space on an image side of the first lens component, and a sign of a refractive power of the second lens component differs from a sign of a refractive power of the first lens component, and the following conditional expression (1) is satisfied. 3.4≤|f1/f3|≤9  (1)

公开(公告)号：US20190243115A1

公开(公告)日：2019-08-08

申请号：US16259482

申请日：2019-01-28

Applicant: OLYMPUS CORPORATION

Inventor： Kento HARA ,  Tadashi HIRATA ,  Yasuharu YAMADA

IPC: G02B21/14 ,  G02B13/18 ,  F21V8/00 ,  G02B27/30

CPC classification number: G02B21/14 ,  G02B6/002 ,  G02B13/18 ,  G02B27/30

Abstract: An information acquisition apparatus includes an illuminating section, an image forming optical system, and an image pickup element. The image forming optical system includes an incidence-side lens unit having a positive refractive power, an aperture section, and an emergence-side lens unit having a positive refractive power. The incidence-side lens unit and the emergence-side lens unit include a plurality of positive lenses and at least one negative lens, and the following conditional expressions (1) to (9) are satisfied: −6

公开(公告)号：US20180017770A1

公开(公告)日：2018-01-18

申请号：US15717816

申请日：2017-09-27

Applicant: OLYMPUS CORPORATION

Inventor： Toyoki KON ,  Kazuteru KAWAMURA ,  Yasuharu YAMADA ,  Tetsuya YANAI ,  Daichi MURAKAMI

IPC: G02B15/163 ,  G02B13/00 ,  G02B15/20 ,  G02B27/64

Abstract: A zoom lens includes in order 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 having a negative refractive power, and a fifth lens unit having a positive refractive power. The first lens unit includes a positive lens, and the second lens unit includes a positive lens, and the following conditional expressions (1), (2), (3), and (4) are satisfied: −0.015≦Tp2G_min_p≦0.015  (1), 70.3≦νd1G_max_p  (2), 1.76≦nd2G_max_p≦2.3  (3), and 0.3≦|f2/f3|≦0.9  (4).