公开(公告)号：US09664881B2

公开(公告)日：2017-05-30

申请号：US14879624

申请日：2015-10-09

Applicant: HOYA CORPORATION

Inventor： Daisuke Koreeda

IPC: G02B13/18 ,  G02B3/02 ,  G02B9/62 ,  G02B13/00 ,  G02B27/00

CPC classification number: G02B13/0045 ,  G02B27/0025

Abstract: An imaging optical system includes a positive first lens element having a convex surface on the object side, a negative second lens element having a concave surface on the image side, a third lens element, a positive fourth lens element, a fifth lens element, and a negative sixth lens element provided with at least one aspherical surface that has inflection points other than at an optical axis thereof. The following conditions (1) and (2) are satisfied: 0.86

公开(公告)号：US09581794B2

公开(公告)日：2017-02-28

申请号：US15010432

申请日：2016-01-29

Applicant: HOYA CORPORATION

Inventor： Koichiro Hayakawa ,  Daisuke Koreeda

IPC: G02B15/14 ,  G02B15/173

CPC classification number: G02B15/173

Abstract: A zoom lens system includes a positive first lens group, a negative second lens group, a positive third lens group and a positive fourth lens group, in that order from the object side. Upon zooming from the short to long focal length extremities, each of the first through fourth lens groups move along the optical axis thereof. The following conditions (1) and (2) are satisfied: 1.05

Abstract translation: 变焦透镜系统从物体侧依次包括正的第一透镜组，负的第二透镜组，正的第三透镜组和正的第四透镜组。 在从短焦距到长焦距四极放大时，第一至第四透镜组中的每一个沿着其光轴移动。 满足以下条件（1）和（2）：1.05

公开(公告)号：US08941925B2

公开(公告)日：2015-01-27

申请号：US13854378

申请日：2013-04-01

Applicant: Hoya Corporation

Inventor： Daisuke Koreeda ,  Toshiki Nakamura

IPC: G02B15/14 ,  G02B15/173

CPC classification number: G02B15/14 ,  G02B15/173

Abstract: A zoom lens system includes a positive first lens group, a negative second lens group, a positive third lens group, a negative fourth lens group, and a positive fifth lens group. Upon zooming from the short to long focal length extremities, the distance between the first and second lens groups increases, and the distance between the second and third lens groups decreases. The following conditions are satisfied: 0.30

Abstract translation: 变焦透镜系统包括正的第一透镜组，负的第二透镜组，正的第三透镜组，负的第四透镜组和正的第五透镜组。 在从短焦距到长焦距四肢放大时，第一和第二透镜组之间的距离增加，并且第二和第三透镜组之间的距离减小。 满足以下条件：0.30

公开(公告)号：US08699312B2

公开(公告)日：2014-04-15

申请号：US13954074

申请日：2013-07-30

Applicant: Hoya Corporation

Inventor： Daisuke Koreeda ,  Shuichi Takeuchi

IPC: G11B7/00

CPC classification number: G11B7/1275 ,  G02B5/1895 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

Abstract: An objective optical system for information recording/reproducing, at least one of optical surfaces of the objective optical system comprising a diffraction surface including a first region contributing to converging first, second and third beams and including a diffraction structure formed such that use diffraction orders for the first, second and third beams are 1st-orders and a condition 0.03

Abstract translation: 一种用于信息记录/再现的物镜光学系统，所述物镜光学系统的光学表面中的至少一个包括衍射表面，所述衍射表面包括有助于会聚第一，第二和第三光束的第一区域，并且包括衍射结构， 第一，第二和第三光束为1阶，满足条件0.03 <（λB11-λ1）/λ1<0.40; 第二区域有助于仅会聚第一和第二光束，并且包括形成为使得衍射级数为1级并且条件为-0.35 <（λB12-λB11）/λ1<0.35的衍射结构; 以及第三区域，仅有助于仅会聚第一光束，并且包括衍射结构，所述衍射结构形成为使得第一光束的使用衍射级为奇数阶，并且条件为：-0.23