公开(公告)号：US20090285080A1

公开(公告)日：2009-11-19

申请号：US12510350

申请日：2009-07-28

申请人： Koichiro WAKABAYASHI ,  Keiko Hirao ,  Mitsuhiro Miyauchi ,  Yutaka Makino ,  Yasuyuki Sugi ,  Yoshikazu Mitsui

发明人： Koichiro WAKABAYASHI ,  Keiko Hirao ,  Mitsuhiro Miyauchi ,  Yutaka Makino ,  Yasuyuki Sugi ,  Yoshikazu Mitsui

IPC分类号： G11B7/135

CPC分类号： G11B7/1369 ,  G11B7/13925 ,  G11B2007/0006

摘要： A pickup lens with a phase compensator is composed of a condenser lens and a phase compensator. At least one surface of the condenser lens has a step-like annular zone structure to compensate wavefront aberration generated when recording and reproducing data on an information recording medium having a substrate thickness of t1 with a laser beam having a wavelength λ1 and wavefront aberration generated when recording and reproducing data on an information recording medium having a substrate thickness of t2 with a laser beam having a wavelength λ2. The phase compensator compensates wavefront aberration generated when recording and reproducing data on an information recording medium having a substrate thickness of t3 with a laser beam having a wavelength λ3.

摘要翻译： 具有相位补偿器的拾取镜头由聚光透镜和相位补偿器组成。 聚光透镜的至少一个表面具有阶梯状环形区域结构，用于补偿当在具有基板厚度t1的信息记录介质上记录和再现数据时产生的波前像差，其中激光束具有波长λ1的激光束和当 在具有波长λ2的激光束的基板厚度为t2的信息记录介质上记录和再现数据。 相位补偿器补偿在具有波长λ3的激光束的基板厚度为t3的信息记录介质上记录和再现数据时产生的波前像差。

公开(公告)号：US20080019256A1

公开(公告)日：2008-01-24

申请号：US11826623

申请日：2007-07-17

申请人： Mitsuhiro Miyauchi ,  Koichiro Wakabayashi ,  Yoshikazu Mitsui ,  Yasuyuki Sugi ,  Yutaka Makino

发明人： Mitsuhiro Miyauchi ,  Koichiro Wakabayashi ,  Yoshikazu Mitsui ,  Yasuyuki Sugi ,  Yutaka Makino

IPC分类号： G02B3/02 ,  G11B7/00 ,  G11B7/135

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

摘要： There is provided an optical pickup system which includes a first light source emitting first light having a wavelength λ1, a second light source emitting second light having a wavelength λ2 longer than the wavelength λ1, a third light source emitting third light having a wavelength λ3 longer than the wavelength λ2, and an objective lens focusing the first light on an information recording surface of a first optical recording medium, focusing the second light on an information recording surface of a second optical recording medium, and focusing the third light on an information recording surface of a third optical recording medium. In the optical pickup system, at least one lens surface of the objective lens is divided into a plurality of concentric sections with an optical axis, having a step at each boundary between the sections, each of the sections has a different aspherical shape and m1>m2>0 and −0.060≦m3≦−0.020 are satisfied where an imaging magnification at the first light is m1, an imaging magnification at the second light is m2, and an imaging magnification at the third light is m3 in the objective lens. This enables a decrease in aberration at the first light and the second light and an increase in object distance at the third light. Further, this step enables the shared use of a photodetector for detecting the first light and a photodetector for detecting the second light.

摘要翻译： 提供了一种光学拾取系统，其包括发射具有波长λ1的第一光的第一光源，发射波长λ2长于波长λ1的第二光的第二光源，发射第三光的第三光源，其具有 波长λ3长于波长λ2，以及将第一光聚焦在第一光学记录介质的信息记录表面上的物镜，将第二光聚焦在第二光学记录介质的信息记录表面上，并将第三个光 在第三光记录介质的信息记录表面上的光。 在光学拾取系统中，物镜的至少一个透镜表面被分成具有光轴的多个同心部分，在各部分之间的每个边界处具有台阶，每个部分具有不同的非球面形状，并且m 1 在第一光的成像倍率为m 1，第二光的成像倍数为m 2，第三光的成像倍率为第二光的成像倍率为m 2时，满足m 2> 0且-0.060 <= m 3 <= - 0.020 m 3在物镜中。 这使得能够减少第一光和第二光的像差以及在第三光下物体距离的增加。 此外，该步骤能够共享使用用于检测第一光的光电检测器和用于检测第二光的光电检测器。

公开(公告)号：US20060083122A1

公开(公告)日：2006-04-20

申请号：US11252804

申请日：2005-10-19

申请人： Koichiro Wakabayashi ,  Keiko Hirao ,  Mitsuhiro Miyauchi ,  Yutaka Makino ,  Yasuyuki Sugi ,  Yoshikazu Mitsui

发明人： Koichiro Wakabayashi ,  Keiko Hirao ,  Mitsuhiro Miyauchi ,  Yutaka Makino ,  Yasuyuki Sugi ,  Yoshikazu Mitsui

IPC分类号： G11B7/00

CPC分类号： G11B7/1369 ,  G11B7/13925 ,  G11B2007/0006

摘要： A pickup lens with a phase compensator is composed of a condenser lens and a phase compensator. At least one surface of the condenser lens has a step-like annular zone structure to compensate wavefront aberration generated when recording and reproducing data on an information recording medium having a substrate thickness of t1 with a laser beam having a wavelength λ1 and wavefront aberration generated when recording and reproducing data on an information recording medium having a substrate thickness of t2 with a laser beam having a wavelength λ2. The phase compensator compensates wavefront aberration generated when recording and reproducing data on an information recording medium having a substrate thickness of t3 with a laser beam having a wavelength λ3.

摘要翻译： 具有相位补偿器的拾取镜头由聚光透镜和相位补偿器组成。 聚光透镜的至少一个表面具有阶梯状环形区域结构，以补偿在具有波长λ1和波前像差的激光束在基板厚度为t 1的信息记录介质上记录和再现数据时产生的波前像差 在具有波长λ2的激光束的基板厚度为t 2的信息记录介质上记录和再现数据时产生的相位补偿器补偿当在具有基板厚度的信息记录介质上记录和再现数据时产生的波前像差 t 3具有波长λ3的激光束。

公开(公告)号：US07586815B2

公开(公告)日：2009-09-08

申请号：US11252804

申请日：2005-10-19

申请人： Koichiro Wakabayashi ,  Keiko Hirao ,  Mitsuhiro Miyauchi ,  Yutaka Makino ,  Yasuyuki Sugi ,  Yoshikazu Mitsui

发明人： Koichiro Wakabayashi ,  Keiko Hirao ,  Mitsuhiro Miyauchi ,  Yutaka Makino ,  Yasuyuki Sugi ,  Yoshikazu Mitsui

IPC分类号： G11B7/00

CPC分类号： G11B7/1369 ,  G11B7/13925 ,  G11B2007/0006

摘要： A pickup lens with a phase compensator is composed of a condenser lens and a phase compensator. At least one surface of the condenser lens has a step-like annular zone structure to compensate wavefront aberration generated when recording and reproducing data on an information recording medium having a substrate thickness of t1 with a laser beam having a wavelength λ1 and wavefront aberration generated when recording and reproducing data on an information recording medium having a substrate thickness of t2 with a laser beam having a wavelength λ2. The phase compensator compensates wavefront aberration generated when recording and reproducing data on an information recording medium having a substrate thickness of t3 with a laser beam having a wavelength λ3.

摘要翻译： 具有相位补偿器的拾取镜头由聚光透镜和相位补偿器组成。 聚光透镜的至少一个表面具有阶梯状环形区域结构，用于补偿当在具有基板厚度t1的信息记录介质上记录和再现数据时产生的波前像差，其中激光束具有波长λ1的激光束和当 在具有波长λ2的激光束的基板厚度为t2的信息记录介质上记录和再现数据。 相位补偿器补偿在具有波长λ3的激光束的基板厚度为t3的信息记录介质上记录和再现数据时产生的波前像差。

公开(公告)号：US07855940B2

公开(公告)日：2010-12-21

申请号：US12510350

申请日：2009-07-28

申请人： Koichiro Wakabayashi ,  Keiko Hirao ,  Mitsuhiro Miyauchi ,  Yutaka Makino ,  Yasuyuki Sugi ,  Yoshikazu Mitsui

发明人： Koichiro Wakabayashi ,  Keiko Hirao ,  Mitsuhiro Miyauchi ,  Yutaka Makino ,  Yasuyuki Sugi ,  Yoshikazu Mitsui

IPC分类号： G11B7/00

CPC分类号： G11B7/1369 ,  G11B7/13925 ,  G11B2007/0006

摘要： A pickup lens with a phase compensator is composed of a condenser lens and a phase compensator. At least one surface of the condenser lens has a step-like annular zone structure to compensate wavefront aberration generated when recording and reproducing data on an information recording medium having a substrate thickness of t1 with a laser beam having a wavelength λ1 and wavefront aberration generated when recording and reproducing data on an information recording medium having a substrate thickness of t2 with a laser beam having a wavelength λ2. The phase compensator compensates wavefront aberration generated when recording and reproducing data on an information recording medium having a substrate thickness of t3 with a laser beam having a wavelength λ3.

摘要翻译： 具有相位补偿器的拾取镜头由聚光透镜和相位补偿器组成。 聚光透镜的至少一个表面具有台阶状的环形区域结构，以补偿当在具有基板厚度t1的信息记录介质上记录和再现数据时产生的波前像差，其中激光束具有波长λ1的激光束和当 在具有波长λ2的激光束的基板厚度为t2的信息记录介质上记录和再现数据。 相位补偿器补偿在具有波长λ3的激光束的基板厚度为t3的信息记录介质上记录和再现数据时产生的波前像差。

公开(公告)号：US07787349B2

公开(公告)日：2010-08-31

申请号：US11405436

申请日：2006-04-18

申请人： Koichiro Wakabayashi ,  Mitsuhiro Miyauchi ,  Yasuyuki Sugi ,  Yutaka Makino

发明人： Koichiro Wakabayashi ,  Mitsuhiro Miyauchi ,  Yasuyuki Sugi ,  Yutaka Makino

IPC分类号： G11B7/00

CPC分类号： G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

摘要： An optical pickup lens focuses laser beams having different wavelengths λ1, λ2 and λ3 on at least three kinds of optical discs. At least one side of the optical pickup lens has a concentric loop zonal structure for compensating wavefront aberration occurring when recording or reproducing an optical disc having a substrate thickness t1 by the laser beam having the wavelength λ1 and wavefront aberration occurring when recording or reproducing an optical disc having a substrate thickness t2 by the laser beam having the wavelength λ2. When recording or reproducing an optical disc having a substrate thickness t3 by the laser beam having the wavelength λ3, a phase difference given to the laser beam having the wavelength λ3 due to the concentric loop zonal structure is about 0.15λ or smaller.

摘要翻译： 光拾取透镜将具有不同波长λ1，λ2和λ3的激光束聚焦在至少三种光盘上。 光学拾取透镜的至少一侧具有同心环状区域结构，用于补偿当记录或再现具有波长λ1的激光束和当记录或再现光学时产生的波前像差而具有基板厚度t1的光盘时发生的波前像差 通过具有波长λ2的激光束具有衬底厚度t2的光盘。 当通过具有波长λ3的激光束记录或再现具有基板厚度t3的光盘时，由于同心环形区域结构而给予具有波长λ3的激光束的相位差为约0.15λ或更小。

公开(公告)号：US20060262707A1

公开(公告)日：2006-11-23

申请号：US11434212

申请日：2006-05-16

申请人： Mitsuhiro Miyauchi ,  Koichiro Wakabayashi ,  Yasuyuki Sugi ,  Yutaka Makino

发明人： Mitsuhiro Miyauchi ,  Koichiro Wakabayashi ,  Yasuyuki Sugi ,  Yutaka Makino

IPC分类号： G11B7/135

CPC分类号： G11B7/1275 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/139 ,  G11B7/13922 ,  G11B2007/0006

摘要： A lens surface of an objective lens is divided into a plurality of zones concentric about an optical axis. The lens surface includes an inner area and an outer area located outside the inner area. The inner area focuses the first light beam on the information recording surface of the first optical recording medium and focuses the second light beam on the information recording surface of the second optical recording medium. The outer area causes the first light beam to become flare and focuses the second light beam on the information recording surface of the second optical recording medium.

摘要翻译： 物镜的透镜表面被分成与光轴同心的多个区域。 透镜表面包括位于内部区域外部的内部区域和外部区域。 内部区域将第一光束聚焦在第一光学记录介质的信息记录表面上，并将第二光束聚焦在第二光学记录介质的信息记录表面上。 外部区域使得第一光束变得耀斑，并将第二光束聚焦在第二光学记录介质的信息记录表面上。

公开(公告)号：US20060245315A1

公开(公告)日：2006-11-02

申请号：US11405436

申请日：2006-04-18

申请人： Koichiro Wakabayashi ,  Mitsuhiro Miyauchi ,  Yasuyuki Sugi ,  Yutaka Makino

发明人： Koichiro Wakabayashi ,  Mitsuhiro Miyauchi ,  Yasuyuki Sugi ,  Yutaka Makino

IPC分类号： G11B7/00

CPC分类号： G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

摘要： An optical pickup lens focuses laser beams having different wavelengths λ1, λ2 and λ3 on at least three kinds of optical discs. At least one side of the optical pickup lens has a concentric loop zonal structure for compensating wavefront aberration occurring when recording or reproducing an optical disc having a substrate thickness t1 by the laser beam having the wavelength λ1 and wavefront aberration occurring when recording or reproducing an optical disc having a substrate thickness t2 by the laser beam having the wavelength λ2. When recording or reproducing an optical disc having a substrate thickness t3 by the laser beam having the wavelength λ3, a phase difference given to the laser beam having the wavelength λ3 due to the concentric loop zonal structure is about 0.15 λ or smaller.

摘要翻译： 光学拾取透镜将具有不同波长λ1，λ2和λ3的激光束聚焦在至少三种光盘上。 光学拾取透镜的至少一侧具有同心环状区域结构，用于补偿当记录或再现具有波长λ1的激光束和在记录或再现光学时产生的波前像差而记录或再现具有基板厚度t1的光盘时发生的波前像差 通过具有波长λ2的激光束具有基板厚度t2的光盘。 当通过具有波长λ3的激光束记录或再现具有基板厚度t3的光盘时，由于同心环带状结构而赋予具有波长λ3的激光束的相位差为约0.15λ或更小。

公开(公告)号：US07606120B2

公开(公告)日：2009-10-20

申请号：US11511302

申请日：2006-08-29

申请人： Yutaka Makino ,  Yasuyuki Sugi

发明人： Yutaka Makino ,  Yasuyuki Sugi

IPC分类号： G11B7/00

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

摘要： An objective lens of this embodiment is used in an optical head in which a distance between a DVD laser and a CD laser is fixed. The objective lens focuses a laser beam emitted from the DVD laser on a DVD by a numerical aperture of 0.60, and focuses a laser beam emitted from the CD laser on a CD by an numerical aperture of 0.47. The wavefront aberration in design for CD is set greater than the wavefront aberration in design for DVD.

摘要翻译： 该实施例的物镜用于固定DVD激光器和CD激光器之间的距离的光学头中。 物镜将从DVD激光器发射的激光束以0.60的数值孔径聚焦在DVD上，并将从CD激光器发射的激光束聚焦在CD上的数值孔径为0.47。 CD设计中的波前像差设置为大于DVD设计中的波前像差。

公开(公告)号：US20090257338A1

公开(公告)日：2009-10-15

申请号：US12382741

申请日：2009-03-23

申请人： Naofumi Ueda ,  Yasuyuki Sugi ,  Yutaka Makino

发明人： Naofumi Ueda ,  Yasuyuki Sugi ,  Yutaka Makino

IPC分类号： G11B7/135 ,  G02B3/08

CPC分类号： G02B5/1895 ,  G11B7/1367 ,  G11B7/1374 ,  G11B7/13922

摘要： A pickup lens has a plurality of ring zones on at least one surface, and steps are formed respectively between the plurality of ring zones. The plurality of steps have step differences causing laser light to have a phase difference to reduce aberration occurring in the pickup lens due to a change in ambient temperature. Further, when a numerical aperture of the pickup lens is NA, a focal length is f (mm) and a working distance is WD (mm), the pickup lens is fabricated to satisfy NA=0.85, 1.1=f=1.8 and WD=0.3.

摘要翻译： 拾取透镜在至少一个表面上具有多个环形区域，并且在多个环形区域之间分别形成台阶。 多个步骤具有使得激光具有相位差以产生由于环境温度变化而在拾取透镜中发生的像差的阶差。 此外，当拾取透镜的数值孔径为NA时，焦距为f（mm），工作距离为WD（mm），拾取透镜被制造成满足NA = 0.85,1.1 = f = 1.8，WD = 0.3。