公开(公告)号：US20210384971A1

公开(公告)日：2021-12-09

申请号：US17194912

申请日：2021-03-08

Applicant: TAMRON CO., LTD.

Inventor： Yusuke HASHIMOTO ,  Nobuyuki ADACHI ,  Koji KAWAGUCHI ,  Hirofumi MOCHIZUKI ,  Keijiro ABE ,  Yuichi IMAMIYA ,  Hironori TAGUCHI

IPC: H04B10/112 ,  G02B15/00

Abstract: A communication device includes a zoom lens that collects signal light.

公开(公告)号：US20140049845A1

公开(公告)日：2014-02-20

申请号：US14063691

申请日：2013-10-25

Applicant: TAMRON CO., LTD.

Inventor： Nobuyuki ADACHI ,  Yasuhiko Obikane ,  Takahiko Sakai

IPC: G02B13/00

CPC classification number: G02B13/0015 ,  G02B9/12 ,  G02B9/62 ,  G02B9/64 ,  G02B13/00

Abstract: A fixed focus lens comprising, sequentially from an object side, a first lens group having a positive refractive power; a second lens group having a negative refractive power; and a third lens group having a positive refractive power. The first lens group includes an aperture stop. The second lens group is configured by a single lens element. During focusing, the second lens group moves along an optical axis and the first lens group and the third lens group are fixed with respect to an imaging plane.

Abstract translation: 一种固定聚焦透镜，其从物体侧依次具有正屈光力的第一透镜组; 具有负屈光力的第二透镜组; 以及具有正屈光力的第三透镜组。 第一透镜组包括孔径光阑。 第二透镜组由单个透镜元件构成。 在聚焦期间，第二透镜组沿光轴移动，第一透镜组和第三透镜组相对于成像平面固定。