公开(公告)号：US20100135144A1

公开(公告)日：2010-06-03

申请号：US12628555

申请日：2009-12-01

Applicant: Yuichi TAKAHASHI ,  Fumitake SAKAI ,  Yukio HIBINO ,  Koichi MURAMATSU ,  Kazuo MOMOO

Inventor： Yuichi TAKAHASHI ,  Fumitake SAKAI ,  Yukio HIBINO ,  Koichi MURAMATSU ,  Kazuo MOMOO

IPC: G11B7/135

CPC classification number: G11B7/1275 ,  G11B7/1378 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: An optical pickup device according to the present invention comprises: a first mirror for reflecting a first light beam outputted from a first light source and letting a second light beam outputted from a second light source pass therethrough; a first object lens for converging the first light beam reflected by the first mirror on an information recording surface of a recording medium; a second mirror for reflecting the second light beam passing through the first mirror; a second object lens for converging the second light beam reflected by the second mirror on the information recording surface of the recording medium; and an achromatic lens for correcting an axial chromatic aberration of the second object lens generated by wavelength variation of the second light beam, wherein the achromatic lens is provided in an optical path between the first mirror and the second mirror.

Abstract translation: 根据本发明的光拾取装置包括：用于反射从第一光源输出的第一光束并使从第二光源输出的第二光束通过的第一反射镜; 第一物镜，用于将由第一反射镜反射的第一光束会聚在记录介质的信息记录表面上; 用于反射通过第一反射镜的第二光束的第二反射镜; 用于将由第二反射镜反射的第二光束会聚在记录介质的信息记录表面上的第二物镜; 以及用于校正由第二光束的波长变化产生的第二物镜的轴向色差的消色差透镜，其中，所述消色差透镜设置在所述第一反射镜和所述第二反射镜之间的光路中。

公开(公告)号：US08085626B2

公开(公告)日：2011-12-27

申请号：US12628555

申请日：2009-12-01

Applicant: Yuichi Takahashi ,  Fumitake Sakai ,  Yukio Hibino ,  Koichi Muramatsu ,  Kazuo Momoo

Inventor： Yuichi Takahashi ,  Fumitake Sakai ,  Yukio Hibino ,  Koichi Muramatsu ,  Kazuo Momoo

IPC: G11B7/00

CPC classification number: G11B7/1275 ,  G11B7/1378 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: An optical pickup device according to the present invention comprises: a first mirror for reflecting a first light beam outputted from a first light source and letting a second light beam outputted from a second light source pass therethrough; a first object lens for converging the first light beam reflected by the first mirror on an information recording surface of a recording medium; a second mirror for reflecting the second light beam passing through the first mirror; a second object lens for converging the second light beam reflected by the second mirror on the information recording surface of the recording medium; and an achromatic lens for correcting an axial chromatic aberration of the second object lens generated by wavelength variation of the second light beam, wherein the achromatic lens is provided in an optical path between the first mirror and the second mirror.

Abstract translation: 根据本发明的光拾取装置包括：用于反射从第一光源输出的第一光束并使从第二光源输出的第二光束通过的第一反射镜; 第一物镜，用于将由第一反射镜反射的第一光束会聚在记录介质的信息记录表面上; 用于反射通过第一反射镜的第二光束的第二反射镜; 用于将由第二反射镜反射的第二光束会聚在记录介质的信息记录表面上的第二物镜; 以及用于校正由第二光束的波长变化产生的第二物镜的轴向色差的消色差透镜，其中，所述消色差透镜设置在所述第一反射镜和所述第二反射镜之间的光路中。