公开(公告)号：US20130308034A1

公开(公告)日：2013-11-21

申请号：US13892253

申请日：2013-05-11

Applicant: Olympus Imaging Corp.

Inventor： Yasuji OGATA

IPC: G03B17/56 ,  G02B13/02

CPC classification number: G02B7/021 ,  G02B9/60 ,  G02B13/02 ,  G02B15/12 ,  G02B27/0018 ,  G02B27/0025 ,  G03B17/565 ,  H04N5/2252 ,  H04N5/2254

Abstract: A teleconverter includes a master lens apparatus-side mount on which a master lens apparatus is mounted, a camera body-side mount on which a camera body is mounted, and a converter lens unit that has a negative refracting power for mounting the master lens apparatus thereon to obtain a lens system having a focal length longer than that of the master lens apparatus, the converter lens unit including a first lens group on the master lens apparatus side and a second lens group on the camera body side with an on longest air separation interposed between them, the first lens group has positive refracting power, and the second lens group has negative refracting power, with satisfaction of the following condition (1): −1.53

Abstract translation: 远摄转换器包括其上安装有主镜头装置的主镜头装置侧支架，安装有照相机主体的相机体侧安装件和具有用于安装主镜头装置的负折射力的转换镜头单元 以获得具有比主镜头装置的焦距长的焦距的透镜系统，转换器透镜单元包括主镜头装置侧的第一透镜组和相机主体侧的第二透镜组，具有最长的空气分离 第一透镜组具有正折射率，第二透镜组具有负折射力，满足以下条件（1）：-1.53​​

公开(公告)号：US20150205188A1

公开(公告)日：2015-07-23

申请号：US14673194

申请日：2015-03-30

Applicant: OLYMPUS IMAGING CORP.

Inventor： Yasuji OGATA

IPC: G03B17/56 ,  G02B15/12 ,  G02B13/02

CPC classification number: G02B7/021 ,  G02B9/60 ,  G02B13/02 ,  G02B15/12 ,  G02B27/0018 ,  G02B27/0025 ,  G03B17/565 ,  H04N5/2252 ,  H04N5/2254

Abstract: A teleconverter includes a master lens apparatus-side mount on which a master lens apparatus is mounted, a camera body-side mount on which a camera body is mounted, and a converter lens unit that has a negative refracting power for mounting the master lens apparatus thereon to obtain a lens system having a focal length longer than that of the master lens apparatus, the converter lens unit including a first lens group on the master lens apparatus side and a second lens group on the camera body side with an on longest air separation interposed between them, the first lens group has positive refracting power, and the second lens group has negative refracting power, with satisfaction of the following condition (1): −1.53

Abstract translation: 远摄转换器包括其上安装有主镜头装置的主镜头装置侧支架，安装有照相机主体的相机体侧安装件和具有用于安装主镜头装置的负折射力的转换镜头单元 以获得具有比主镜头装置的焦距长的焦距的透镜系统，转换器透镜单元包括主镜头装置侧的第一透镜组和相机主体侧的第二透镜组，具有最长的空气分离 第一透镜组具有正折射率，第二透镜组具有负折射力，满足以下条件（1）：-1.53​​

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）。