公开(公告)号：US07345983B2

公开(公告)日：2008-03-18

申请号：US10949279

申请日：2004-09-27

申请人： Tohru Kimura ,  Eiji Nomura ,  Nobuyoshi Mori

发明人： Tohru Kimura ,  Eiji Nomura ,  Nobuyoshi Mori

IPC分类号： G11B7/00

CPC分类号： G11B7/13925 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1369 ,  G11B7/1378 ,  G11B2007/0006 ,  G11B2007/0013 ,  G11B2007/13727

摘要： An optical pickup apparatus includes: first-third light sources; a packaged multiple light source unit for packaging emitting points of at least two of the first-third light sources in one housing; an objective optical system for converging light fluxes emitted by light sources onto information recording surfaces of at least three kinds of optical disks; and a magnification adjusting optical unit having an actuator and a movable lens group and being arranged in an optical path between the packaged multiple light source unit and the objective optical system, wherein the movable lens group is driven by the actuator along the optical axis so as to change a magnification of the objective optical system according to a wavelength of a light flux emitted by the packaged multiple light source unit.

摘要翻译： 光拾取装置包括：第一至第三光源; 封装的多个光源单元，用于封装在一个外壳中发射至少两个第一三个光源的点; 用于将由光源发射的光束会聚到至少三种光盘的信息记录表面上的物镜光学系统; 以及具有致动器和可移动透镜组并且被布置在所述封装的多个光源单元和所述物镜光学系统之间的光路中的放大率调整光学单元，其中所述可移动透镜组由所述致动器沿着所述光轴驱动，以便 根据由封装的多个光源单元发射的光束的波长来改变物镜光学系统的放大倍率。

公开(公告)号：US07515523B2

公开(公告)日：2009-04-07

申请号：US10859982

申请日：2004-06-04

申请人： Tohru Kimura ,  Nobuyoshi Mori ,  Eiji Nomura

发明人： Tohru Kimura ,  Nobuyoshi Mori ,  Eiji Nomura

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G11B7/1367 ,  G11B7/1374 ,  G11B7/13922

摘要： An optical system utilized in an optical pickup apparatus comprising: an aberration-correcting element made of a plastic material; and a converging lens to converge a light flux emitted from the aberration-correcting element, the converging lens being made of a plastic material, wherein the aberration-correcting element has a first optical surface provided thereon an optical path difference generating structure and has a second optical surface provided thereon a diffractive structure, and the converging lens is a single refractive lens having at least an aspherical surface.

摘要翻译： 一种在光拾取装置中使用的光学系统，包括：由塑料材料制成的像差校正元件; 以及聚光透镜，用于会聚从像差修正元件发出的光束，会聚透镜由塑料材料制成，其中像差修正元件具有设置在其上的光程差产生结构的第一光学表面，并具有第二 在其上设置有衍射结构的光学表面，并且会聚透镜是具有至少非球面的单折射透镜。

公开(公告)号：US20050088952A1

公开(公告)日：2005-04-28

申请号：US10949279

申请日：2004-09-27

申请人： Tohru Kimura ,  Nobuyoshi Mori ,  Eiji Nomura

发明人： Tohru Kimura ,  Nobuyoshi Mori ,  Eiji Nomura

IPC分类号： G11B7/085 ,  G02B9/10 ,  G02B13/18 ,  G11B7/00 ,  G11B7/09 ,  G11B7/095 ,  G11B7/12 ,  G11B7/125 ,  G11B7/135

CPC分类号： G11B7/13925 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1369 ,  G11B7/1378 ,  G11B2007/0006 ,  G11B2007/0013 ,  G11B2007/13727

摘要： An optical pickup apparatus includes: first-third light sources; a packaged multiple light source unit for packaging emitting points of at least two of the first-third light sources in one housing; an objective optical system for converging light fluxes emitted by light sources onto information recording surfaces of at least three kinds of optical disks; and a magnification adjusting optical unit having an actuator and a movable lens group and being arranged in an optical path between the packaged multiple light source unit and the objective optical system, wherein the movable lens group is driven by the actuator along the optical axis so as to change a magnification of the objective optical system according to a wavelength of a light flux emitted by the packaged multiple light source unit.

摘要翻译： 光拾取装置包括：第一至第三光源; 封装的多个光源单元，用于封装在一个外壳中发射至少两个第一三个光源的点; 用于将由光源发射的光束会聚到至少三种光盘的信息记录表面上的物镜光学系统; 以及具有致动器和可移动透镜组并且被布置在所述封装的多个光源单元和所述物镜光学系统之间的光路中的放大率调整光学单元，其中所述可移动透镜组由所述致动器沿着所述光轴驱动，以便 根据由封装的多个光源单元发射的光束的波长来改变物镜光学系统的放大倍率。

公开(公告)号：US20060203692A1

公开(公告)日：2006-09-14

申请号：US11366546

申请日：2006-03-03

申请人： Kohei Ota ,  Nobuyoshi Mori ,  Junji Hashimura ,  Tohru Kimura ,  Kiyono Ikenaka ,  Katsuya Sakamoto ,  Eiji Nomura

发明人： Kohei Ota ,  Nobuyoshi Mori ,  Junji Hashimura ,  Tohru Kimura ,  Kiyono Ikenaka ,  Katsuya Sakamoto ,  Eiji Nomura

IPC分类号： G11B7/00

CPC分类号： G11B7/1367 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

摘要： An optical pickup apparatus includes: a first light source for emitting a first light flux; a second light source for emitting a second light flux; a third light source for emitting a third light flux; and an objective optical unit having a first optical path difference providing structure and a second optical path difference providing structure. Magnifications of the objective optical unit for the first-third light fluxes have almost same value. The first optical path difference providing structure provides a predefined optical path difference and changes a spherical aberration to be one of under-correction and over-correction for all of the first light flux, the second light flux, and the third light flux. The second optical path difference providing structure provides a predefined optical path difference and changes a spherical aberration to be the other of under-correction and over-correction of the spherical aberration only for the second light flux.

摘要翻译： 一种光学拾取装置包括：用于发射第一光通量的第一光源; 用于发射第二光通量的第二光源; 用于发射第三光通量的第三光源; 以及具有第一光程差提供结构和第二光程差提供结构的物镜光学单元。 用于第一至第三光束的物镜光学单元的放大率具有几乎相同的值。 第一光程差提供结构提供预定的光程差，并且将球面像差改变为对于所有第一光通量，第二光通量和第三光通量的校正和过校正之一。 第二光程差提供结构提供预定的光程差，并且将球面像差改变为仅用于第二光通量的球面像差的校正不足和过校正。

公开(公告)号：US08169878B2

公开(公告)日：2012-05-01

申请号：US13089983

申请日：2011-04-19

申请人： Kentarou Nakamura ,  Kohei Ota ,  Nobuyoshi Mori ,  Eiji Nomura

发明人： Kentarou Nakamura ,  Kohei Ota ,  Nobuyoshi Mori ,  Eiji Nomura

IPC分类号： G11B7/00

CPC分类号： G11B7/1374 ,  G02B3/08 ,  G02B27/42 ,  G02B27/4238 ,  G02B27/4283 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/13922 ,  G11B2007/0006

摘要： An optical pickup apparatus according to the present invention includes: a first light source for emitting a first light flux; a second light source for emitting a second light flux; a third light source for emitting a third light flux; and an objective optical element. The objective optical element has an optical surface including at least two areas provided with optical path difference providing structures. The objective optical element converges the first to third light fluxes each passing through the predetermined areas on the objective optical element onto respective information recording surfaces of the first to third optical disks. The optical pickup apparatus provides a wavelength dependency of a spherical aberration so as to correct a change in a spherical aberration due to a refractive index change with a temperature change of the objective optical element.

摘要翻译： 根据本发明的光拾取装置包括：用于发射第一光通量的第一光源; 用于发射第二光通量的第二光源; 用于发射第三光通量的第三光源; 和物镜光学元件。 物镜光学元件具有包括设置有光程差提供结构的至少两个区域的光学表面。 物镜光学元件将通过物镜光学元件上的预定区域的第一至第三光束会聚到第一至第三光盘的相应信息记录表面上。 光学拾取装置提供球面像差的波长依赖性，以便校正由于物镜光学元件的温度变化引起的折射率变化引起的球面像差的变化。

公开(公告)号：US20110194396A1

公开(公告)日：2011-08-11

申请号：US13089983

申请日：2011-04-19

申请人： Kentarou NAKAMURA ,  Kohei Ota ,  Nobuyoshi Mori ,  Eiji Nomura

发明人： Kentarou NAKAMURA ,  Kohei Ota ,  Nobuyoshi Mori ,  Eiji Nomura

IPC分类号： G11B7/135

CPC分类号： G11B7/1374 ,  G02B3/08 ,  G02B27/42 ,  G02B27/4238 ,  G02B27/4283 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/13922 ,  G11B2007/0006

摘要： An optical pickup apparatus according to the present invention includes: a first light source for emitting a first light flux; a second light source for emitting a second light flux; a third light source for emitting a third light flux; and an objective optical element. The objective optical element has an optical surface including at least two areas provided with optical path difference providing structures. The objective optical element converges the first to third light fluxes each passing through the predetermined areas on the objective optical element onto respective information recording surfaces of the first to third optical disks. The optical pickup apparatus provides a wavelength dependency of a spherical aberration so as to correct a change in a spherical aberration due to a refractive index change with a temperature change of the objective optical element.

摘要翻译： 根据本发明的光拾取装置包括：用于发射第一光通量的第一光源; 用于发射第二光通量的第二光源; 用于发射第三光通量的第三光源; 和物镜光学元件。 物镜光学元件具有包括设置有光程差提供结构的至少两个区域的光学表面。 物镜光学元件将通过物镜光学元件上的预定区域的第一至第三光束会聚到第一至第三光盘的相应信息记录表面上。 光学拾取装置提供球面像差的波长依赖性，以便校正由于物镜光学元件的温度变化引起的折射率变化引起的球面像差的变化。

公开(公告)号：US20070211607A1

公开(公告)日：2007-09-13

申请号：US11712959

申请日：2007-03-02

申请人： Kentarou Nakamura ,  Kohei Ota ,  Nobuyoshi Mori ,  Eiji Nomura

发明人： Kentarou Nakamura ,  Kohei Ota ,  Nobuyoshi Mori ,  Eiji Nomura

IPC分类号： G11B7/00

CPC分类号： G11B7/1374 ,  G02B3/08 ,  G02B27/42 ,  G02B27/4238 ,  G02B27/4283 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/13922 ,  G11B2007/0006

摘要： An optical pickup apparatus according to the present invention includes: a first light source for emitting a first light flux; a second light source for emitting a second light flux; a third light source for emitting a third light flux; and an objective optical element. The objective optical element has an optical surface including at least two areas provided with optical path difference providing structures. The objective optical element converges the first to third light fluxes each passing through the predetermined areas on the objective optical element onto respective information recording surfaces of the first to third optical disks. The optical pickup apparatus provides a wavelength dependency of a spherical aberration so as to correct a change in a spherical aberration due to a refractive index change with a temperature change of the objective optical element.

摘要翻译： 根据本发明的光拾取装置包括：用于发射第一光通量的第一光源; 用于发射第二光通量的第二光源; 用于发射第三光通量的第三光源; 和物镜光学元件。 物镜光学元件具有包括设置有光程差提供结构的至少两个区域的光学表面。 物镜光学元件将通过物镜光学元件上的预定区域的第一至第三光束会聚到第一至第三光盘的相应信息记录表面上。 光学拾取装置提供球面像差的波长依赖性，以便校正由于物镜光学元件的温度变化引起的折射率变化引起的球面像差的变化。

公开(公告)号：US20100284262A1

公开(公告)日：2010-11-11

申请号：US12840273

申请日：2010-07-20

申请人： Kentarou Nakamura ,  Kohei Ota ,  Nobuyoshi Mori ,  Eiji Nomura

发明人： Kentarou Nakamura ,  Kohei Ota ,  Nobuyoshi Mori ,  Eiji Nomura

IPC分类号： G11B7/135

CPC分类号： G11B7/1374 ,  G02B3/08 ,  G02B27/42 ,  G02B27/4238 ,  G02B27/4283 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/13922 ,  G11B2007/0006

摘要： An optical pickup apparatus according to the present invention includes: a first light source for emitting a first light flux; a second light source for emitting a second light flux; a third light source for emitting-a third light flux; and an objective optical element. The objective optical element has an optical surface including at least two areas provided with optical path difference providing structures. The objective optical element converges the first to third light fluxes each passing through the predetermined areas on the objective optical element onto respective information recording surfaces of the first to third optical disks. The optical pickup apparatus provides a wavelength dependency of a spherical aberration so as to correct a change in a spherical aberration due to a refractive index change with a temperature change of the objective optical element.

摘要翻译： 根据本发明的光拾取装置包括：用于发射第一光通量的第一光源; 用于发射第二光通量的第二光源; 用于发射第三光通量的第三光源; 和物镜光学元件。 物镜光学元件具有包括设置有光程差提供结构的至少两个区域的光学表面。 物镜光学元件将通过物镜光学元件上的预定区域的第一至第三光束会聚到第一至第三光盘的相应信息记录表面上。 光学拾取装置提供球面像差的波长依赖性，以便校正由于物镜光学元件的温度变化引起的折射率变化引起的球面像差的变化。

公开(公告)号：US07948857B2

公开(公告)日：2011-05-24

申请号：US12840273

申请日：2010-07-20

申请人： Kentarou Nakamura ,  Kohei Ota ,  Nobuyoshi Mori ,  Eiji Nomura

发明人： Kentarou Nakamura ,  Kohei Ota ,  Nobuyoshi Mori ,  Eiji Nomura

IPC分类号： G11B7/00

CPC分类号： G11B7/1374 ,  G02B3/08 ,  G02B27/42 ,  G02B27/4238 ,  G02B27/4283 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/13922 ,  G11B2007/0006

摘要： An optical pickup apparatus according to the present invention includes: a first light source for emitting a first light flux; a second light source for emitting a second light flux; a third light source for emitting-a third light flux; and an objective optical element. The objective optical element has an optical surface including at least two areas provided with optical path difference providing structures. The objective optical element converges the first to third light fluxes each passing through the predetermined areas on the objective optical element onto respective information recording surfaces of the first to third optical disks. The optical pickup apparatus provides a wavelength dependency of a spherical aberration so as to correct a change in a spherical aberration due to a refractive index change with a temperature change of the objective optical element.

摘要翻译： 根据本发明的光拾取装置包括：用于发射第一光通量的第一光源; 用于发射第二光通量的第二光源; 用于发射第三光通量的第三光源; 和物镜光学元件。 物镜光学元件具有包括设置有光程差提供结构的至少两个区域的光学表面。 物镜光学元件将通过物镜光学元件上的预定区域的第一至第三光束会聚到第一至第三光盘的相应信息记录表面上。 光学拾取装置提供球面像差的波长依赖性，以便校正由于物镜光学元件的温度变化引起的折射率变化引起的球面像差的变化。

公开(公告)号：US07672211B2

公开(公告)日：2010-03-02

申请号：US11712920

申请日：2007-03-02

申请人： Kentarou Nakamura ,  Kohei Ota ,  Nobuyoshi Mori ,  Eiji Nomura

发明人： Kentarou Nakamura ,  Kohei Ota ,  Nobuyoshi Mori ,  Eiji Nomura

IPC分类号： G11B7/00

CPC分类号： G11B7/1374 ,  G02B3/08 ,  G02B27/42 ,  G02B27/4238 ,  G02B27/4283 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/13922 ,  G11B2007/0006

摘要： An optical pickup apparatus according to the present invention includes: a first light source for emitting a first light flux; a second light source for emitting a second light flux; a third light source for emitting a third light flux; and an objective optical element. The objective optical element has an optical surface including at least two areas provided with optical path difference providing structures. The objective optical element converges the first to third light fluxes each passing through the predetermined areas on the objective optical element onto respective information recording surfaces of the first to third optical disks. In the optical pickup apparatus, the third light flux which has passed through an optical path difference providing structure forms a first best focus and a second best focus.

摘要翻译： 根据本发明的光拾取装置包括：用于发射第一光通量的第一光源; 用于发射第二光通量的第二光源; 用于发射第三光通量的第三光源; 和物镜光学元件。 物镜光学元件具有包括设置有光程差提供结构的至少两个区域的光学表面。 物镜光学元件将通过物镜光学元件上的预定区域的第一至第三光束会聚到第一至第三光盘的相应信息记录表面上。 在光拾取装置中，通过光程差提供结构的第三光束形成第一最佳聚焦和第二最佳聚焦。