公开(公告)号：US20150062403A1

公开(公告)日：2015-03-05

申请号：US14538912

申请日：2014-11-12

Applicant: OLYMPUS CORPORATION

Inventor： Takuya OTSU

IPC: G02B13/00 ,  G02B7/09 ,  H04N5/232 ,  G02B9/60

CPC classification number: G02B13/0045 ,  G02B7/09 ,  G02B9/60 ,  H04N5/2254 ,  H04N5/23212 ,  H04N5/23293

Abstract: An optical system includes, in order from the object side, an aperture, a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens having a positive refractive power and having a meniscus shape with a convex surface facing the image side, and a fifth lens having a negative refractive power. The optical system satisfies a certain condition.

Abstract translation: 光学系统从物体侧依次包括孔径，具有正折光力的第一透镜，具有负屈光力的第二透镜，具有正折光力的第三透镜，具有正折光力的第四透镜 并且具有面向图像侧的凸面的弯液面形状和具有负屈光力的第五透镜。 光学系统满足一定条件。

公开(公告)号：US20130093938A1

公开(公告)日：2013-04-18

申请号：US13646998

申请日：2012-10-08

Applicant: OLYMPUS CORPORATION

Inventor： Takuya OTSU

IPC: G02B9/60 ,  H04N5/232

CPC classification number: G02B13/0045 ,  G02B7/09 ,  G02B9/60 ,  H04N5/2254 ,  H04N5/23212 ,  H04N5/23293

Abstract: An optical system includes, in order from the object side, an aperture, a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens having a positive refractive power and having a meniscus shape with a convex surface facing the image side, and a fifth lens having a negative refractive power. The optical system satisfies a certain condition.

公开(公告)号：US20130242156A1

公开(公告)日：2013-09-19

申请号：US13789969

申请日：2013-03-08

Applicant: OLYMPUS CORPORATION

Inventor： Takahiro AMANAI ,  Kenichiro ABE ,  Takuya OTSU ,  Takashi FUJIKURA

IPC: G02B13/04

CPC classification number: G02B13/04 ,  G02B15/177

Abstract: A zoom lens includes in order from an object side, a first lens group having a negative refractive power, a second lens group having a positive refractive power, a third lens group having a negative refractive power, and a fourth lens group having a positive refractive power, and at the time of zooming, the first lens group is fixed, the second lens group moves, the third lens group moves, and the fourth lens group is fixed. The first lens group includes in order from the object side, a negative lens, a reflecting optical element, and a positive lens. The second lens group includes in order from the object side, an aperture stop, a positive lens, a cemented lens having a negative refractive power, and a positive lens. The cemented lens includes a positive lens and a negative lens.

Abstract translation: 变焦透镜从物体侧依次包括具有负折光力的第一透镜组，具有正折光力的第二透镜组，具有负折光力的第三透镜组，以及具有正折射率的第四透镜组 电源，并且在变焦时，第一透镜组被固定，第二透镜组移动，第三透镜​​组移动，并且第四透镜组被固定。 第一透镜组从物体侧依次包括负透镜，反射光学元件和正透镜。 第二透镜组从物体侧依次包括孔径光阑，正透镜，具有负屈光力的胶合透镜和正透镜。 胶合透镜包括正透镜和负透镜。