公开(公告)号：US20060164967A1

公开(公告)日：2006-07-27

申请号：US10562156

申请日：2005-03-25

申请人： Kiyono Ikenaka

发明人： Kiyono Ikenaka

IPC分类号： G11B15/64 ,  G11B17/32

CPC分类号： A01N25/06 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

摘要： An objective lens is used for an optical pickup device that conducts reproducing of information by using a light flux with wavelength λ1 (370 nm≦λ1≦440) for the first optical disc having protective base board thickness t1 (0 mm≦t1≦0.2 mm) and the second optical disc having protective base board thickness t2 (t1

摘要翻译： 物镜用于通过使用具有保护基板厚度t 1（0mm）的第一光盘使用具有波长λ1（370nm <λ1 <440）的光束来进行信息再生的光学拾取装置 <= t 1 <= 0.2mm），第二光盘具有保护基板厚度t 2（t 1

公开(公告)号：US20060023611A1

公开(公告)日：2006-02-02

申请号：US11183608

申请日：2005-07-18

申请人： Mika Wachi ,  Tohru Kimura ,  Kiyono Ikenaka

发明人： Mika Wachi ,  Tohru Kimura ,  Kiyono Ikenaka

IPC分类号： G11B7/00

CPC分类号： G11B7/1367 ,  G11B7/1374

摘要： The present invention provides a compound optical element for an optical pickup apparatus, including: an aspherical lens and a resin layer arranged on at least one optical surface of the aspherical lens and having a phase structure, wherein the compound optical element satisfies a predetermined condition for optical path lengths of a light flux which passes the resin layer. The present invention also provides a compound optical element for an optical pickup apparatus including: a first lens part with a predefined Abbe number; a second lens part with a predefined Abbe number laminated on the first lens part and a phase structure formed on a boundary between the first lens part and air.

摘要翻译： 本发明提供了一种用于光学拾取装置的复合光学元件，包括：非球面透镜和布置在非球面透镜的至少一个光学表面上并具有相位结构的树脂层，其中复合光学元件满足预定条件 通过树脂层的光通量的光路长度。 本发明还提供了一种用于光学拾取装置的复合光学元件，包括：具有预定阿贝数的第一透镜部分; 具有层叠在第一透镜部分上的预定义阿贝数的第二透镜部分和形成在第一透镜部分和空气之间的边界上的相位结构。

公开(公告)号：US20050213472A1

公开(公告)日：2005-09-29

申请号：US11082550

申请日：2005-03-17

申请人： Kiyono Ikenaka ,  Junji Hashimura

发明人： Kiyono Ikenaka ,  Junji Hashimura

IPC分类号： G02B5/18 ,  G02B13/00 ,  G02B13/18 ,  G11B7/00 ,  G11B7/125 ,  G11B7/127 ,  G11B7/135 ,  G11B7/1367 ,  G11B7/1376 ,  G11B7/1392

CPC分类号： G11B7/1367 ,  G11B7/127 ,  G11B7/1376 ,  G11B7/13922 ,  G11B2007/0006

摘要： This invention provides an optical element which has an optical surface in which a first light beam having a wavelength λx and a second light beam having a wavelength λy, which are emitted from light sources, become incident, including a diffraction structure in which a plurality of zone portions are formed, the zone portions being arranged in a radial direction about an optical axis and forming one period by a plurality of zones formed into a staircase shape divided by steps in a section including the optical axis, wherein the plurality of zone portions of said diffraction structure include a first zone portion and a second zone portion whose numbers of zones in one period are different, and of the plurality of zones which form one period, the zones except the zone which gives a largest optical path length to the passing second light beam have at least two different widths in a direction perpendicular to the optical axis, and of the plurality of zones which form the zone portion, two zones which are adjacent to each other via a step are designed to give no actual phase difference to the first light beam to pass the first light beam and give a phase difference to the second light beam to generate a diffraction effect, and an optical pickup device having the optical element.

摘要翻译： 本发明提供了一种光学元件，其具有光学表面，其中具有从光源发射的具有波长长度的第一光束和具有波长长度的第二光束入射，包括衍射结构，其中多个 形成区域部分，沿着光轴的径向布置，并且由形成为包括光轴的部分中的台阶形成为阶梯状的多个区域形成一个周期，其中，多个区域部分 所述衍射结构包括第一区域部分和一个周期中的区域数量不同的第二区域部分，以及形成一个周期的多个区域，除了向通过的第二个区域给出最大光程长度的区域之外的区域 光束在垂直于光轴的方向和形成区域por的多个区域中具有至少两个不同的宽度 通过台阶彼此相邻的两个区域被设计成不向第一光束提供实际的相位差以通过第一光束并且给予第二光束的相位差以产生衍射效应，并且 具有光学元件的光学拾取装置。

公开(公告)号：US07710847B2

公开(公告)日：2010-05-04

申请号：US11713217

申请日：2007-03-02

申请人： Kiyono Ikenaka

发明人： Kiyono Ikenaka

IPC分类号： G11B7/00

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

摘要： An optical pickup apparatus for recording and/or reproducing information for an optical information recording medium, comprising a light converging optical system including a coupling lens and an objective lens, wherein a first diffraction structure is installed on the objective lens, and a second diffraction structure is arranged on the coupling lens, whereby the spherical aberration and chromatic aberration caused by the difference in the thickness of the protective layer are corrected in the light converging optical system as a whole.

摘要翻译： 一种用于记录和/或再现用于光学信息记录介质的信息的光学拾取装置，包括具有耦合透镜和物镜的聚光光学系统，其中第一衍射结构安装在物镜上，第二衍射结构 配置在耦合透镜上，由此在聚光光学系统整体上校正由保护层的厚度差引起的球面像差和色差。

公开(公告)号：US07706237B2

公开(公告)日：2010-04-27

申请号：US11597889

申请日：2005-05-24

申请人： Kiyono Ikenaka

发明人： Kiyono Ikenaka

IPC分类号： G11B7/00

CPC分类号： G11B7/1374 ,  G02B5/18 ,  G02B13/18 ,  G02B27/4238 ,  G02B27/4294 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1392 ,  G11B2007/0006

摘要： An objective lens is provided for an optical pickup apparatus at least reproducing information for a first optical disc, and recording and/or reproducing information for second and a third optical discs. The objective lens includes an optical surface including a common area including a diffractive structure having a cross section in a serrated shape and divided into a plurality of ring-shaped zones. Refractive index differences between media arranged at both side of the optical surface for a light flux with one and the other wavelength satisfy a predetermined condition, and the objective lens satisfies a predetermined conditions defined by using an approximate coefficient which makes a Pearson's correlation coefficient R satisfy 0.99998≦R when a depth parallel to the optical axis of step differences between the ring-shaped zones at a vertical distance from the optical axis is approximated by a least squares method.

摘要翻译： 提供了一种用于光学拾取装置的物镜，至少再现第一光盘的信息，以及用于第二和第三光盘的记录和/或再现信息。 物镜包括光学表面，其包括公共区域，该公共区域包括具有锯齿形状的横截面并被分成多个环形区域的衍射结构。 配置在具有一个波长和另一个波长的光束的光学表面的两侧的介质之间的折射率差满足预定条件，并且物镜满足通过使用使Pearson相关系数R满足的近似系数定义的预定条件 0.99998＆nlE; R，在与光轴垂直距离处的环状区域之间与步进差的光轴平行的深度近似为近似方程。

公开(公告)号：US07426170B2

公开(公告)日：2008-09-16

申请号：US11604804

申请日：2006-11-28

申请人： Kiyono Ikenaka

发明人： Kiyono Ikenaka

IPC分类号： G11B7/135 ,  G11B7/00

CPC分类号： G11B7/1374 ,  G11B7/1275 ,  G11B7/1378 ,  G11B7/13922 ,  G11B2007/0006

摘要： An objective lens according to the present invention is provided for use in an optical pickup apparatus at least reproducing and/or recording information using a light flux with a wavelength λ1 emitted by a first light source for a first optical disc and reproducing and/or recording information using a light flux with a wavelength λ2 emitted by a second light source for a second optical disc. The objective lens includes a diffractive structure formed on the at least one optical surface of the objective lens. The light fluxes with the wavelengths λ1 and λ2 enter the objective lens, an optical system magnifications m1 and m2 of the objective lens respectively for the light fluxes with wavelengths λ1 and λ2 have different signs and values from each other, and the diffractive structure has a positive diffractive action.

摘要翻译： 根据本发明的物镜被提供用于光拾取装置，至少使用由第一光源发射的用于第一光盘的波长λ1的光通量再现和/或记录信息，并且/ 使用由第二光源发射的用于第二光盘的波长λ2的光束记录信息。 物镜包括形成在物镜的至少一个光学表面上的衍射结构。 具有波长λ1和λ2的光通量进入物镜，分别对于具有波长λ1和λ2的光束的物镜的光学系统放大率m 1和m 2具有彼此不同的符号和值， 衍射结构具有正的衍射作用。

公开(公告)号：US20070242591A1

公开(公告)日：2007-10-18

申请号：US11597889

申请日：2005-05-24

申请人： Kiyono Ikenaka

发明人： Kiyono Ikenaka

IPC分类号： G11B7/00

CPC分类号： G11B7/1374 ,  G02B5/18 ,  G02B13/18 ,  G02B27/4238 ,  G02B27/4294 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1392 ,  G11B2007/0006

摘要： An objective lens is provided for an optical pickup apparatus at least reproducing information for a first optical disc, and recording and/or reproducing information for second and a third optical discs. The objective lens includes an optical surface including a common area including a diffractive structure having a cross section in a serrated shape and divided into a plurality of ring-shaped zones. Refractive index differences between media arranged at both side of the optical surface for a light flux with one and the other wavelength satisfy a predetermined condition, and the objective lens satisfies a predetermined conditions defined by using an approximate coefficient which makes a Pearson's correlation coefficient R satisfy 0.99998≦R when a depth parallel to the optical axis of step differences between the ring-shaped zones at a vertical distance from the optical axis is approximated by a least squares method.

摘要翻译： 提供了一种用于光学拾取装置的物镜，至少再现第一光盘的信息，以及用于第二和第三光盘的记录和/或再现信息。 物镜包括光学表面，其包括公共区域，该公共区域包括具有锯齿形状的横截面并被分成多个环形区域的衍射结构。 配置在具有一个波长和另一个波长的光束的光学表面的两侧的介质之间的折射率差满足预定条件，并且物镜满足通过使用使Pearson相关系数R满足的近似系数定义的预定条件 0.99998 <= R时，通过最小二乘法逼近与光轴垂直距离处的环状区域之间的与光轴平行的深度的深度。

公开(公告)号：US20070211600A1

公开(公告)日：2007-09-13

申请号：US11713325

申请日：2007-03-02

申请人： Kiyono Ikenaka

发明人： Kiyono Ikenaka

IPC分类号： G11B7/00

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

摘要： The present invention provides an optical pickup apparatus for recording and/or reproducing information for different kinds of optical information recording media. The 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; a light-converging optical system including an objective lens. The objective lens includes at least one optical surface including a diffractive structure which includes a plurality of ring shaped zones. Each of the ring shaped zones is concentrically arranged around an optical axis and includes a step difference extending along the optical axis. In the objective lens of the optical pickup apparatus, the offence against a sine condition, an average of step differences of the plurality of ring shaped zones, focal length, and magnification satisfy the predetermined conditions.

摘要翻译： 本发明提供一种用于记录和/或再现用于不同种类的光学信息记录介质的信息的光学拾取装置。 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; 包括物镜的聚光光学系统。 物镜包括至少一个包括多个环形区域的衍射结构的光学表面。 每个环形区域围绕光轴同心地布置并且包括沿着光轴延伸的台阶差。 在光学拾取装置的物镜中，针对正弦条件的攻击，多个环形区域的台阶差的平均值，焦距和倍率满足预定条件。

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：US20060198279A1

公开(公告)日：2006-09-07

申请号：US11418998

申请日：2006-05-05

申请人： Tatsuji Kurogama ,  Katsuya Yagi ,  Kiyono Ikenaka

发明人： Tatsuji Kurogama ,  Katsuya Yagi ,  Kiyono Ikenaka

IPC分类号： G11B7/135

CPC分类号： G11B7/1376 ,  G11B7/1275 ,  G11B2007/13727

摘要： An optical pickup apparatus includes: a first light source; a second light source; a third light source; an objective lens; a coupling lens; a light flux splitter; and a light-receiving element. The coupling lens is formed of two or more lenses in two or more groups, and at least one group of the lenses forming the coupling lens is arranged movably along an optical axis of the coupling lens. The each of the first to third light source and a light-receiving portion in the light-receiving element is optically conjugate each other through an information recording surface of the information recording medium when at least one group of the lenses in the coupling lens is positioned at the predefined position.

摘要翻译： 一种光学拾取装置，包括：第一光源; 第二光源; 第三光源; 物镜; 耦合透镜; 光通量分配器; 和光接收元件。 耦合透镜由两个或更多组的两个或更多个透镜形成，并且形成耦合透镜的至少一组透镜沿耦合透镜的光轴可移动地布置。 当耦合透镜中的至少一组透镜被定位时，第一至第三光源中的每一个和光接收元件中的光接收部分通过信息记录介质的信息记录表面彼此光学共轭 在预定义的位置。