公开(公告)号：US20060256673A1

公开(公告)日：2006-11-16

申请号：US11490808

申请日：2006-07-21

申请人： Kiyono Ikenaka ,  Yuichi Atarashi

发明人： Kiyono Ikenaka ,  Yuichi Atarashi

IPC分类号： G11B7/00

CPC分类号： G11B7/1392 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1374 ,  G11B2007/0006

摘要： An optical pickup apparatus comprises first, second and third light sources to emit light fluxes of wavelength λ1, λ2 and λ3 for conducting recording and/or reproducing information for first, second and third optical information recording mediums having respective protective substrates of thickness t1, t2 and t3 and a diffractive optical element located on a common optical path for the first, second and third light sources. A converged-light spot is formed on the first optical information recording medium with m-th order diffracted-light ray of the wavelength λ1, on the second optical information recording medium with n-th order diffracted-light ray of the wavelength λ2, and on the third optical information recording medium with k-th order diffracted-light ray of the wavelength λ3 generated by the diffractive optical element respectively, wherein one of m, n and k is different from one of other two numbers.

摘要翻译： 光拾取装置包括第一，第二和第三光源，以发射波长λ1，λ2和λ3的光束，用于对具有各自的厚度t的保护基板的第一，第二和第三光学信息记录介质进行记录和/或再现信息 1，t 2和t 3以及位于第一，第二和第三光源的公共光路上的衍射光学元件。 在波长为λ2的n阶衍射光线的第二光学信息记录介质上，在具有波长λ1的m级衍射光的第一光学信息记录介质上形成会聚光点 以及分别由衍射光学元件生成的波长λ3的k级衍射光的第三光学信息记录介质，其中m，n和k之一不同于其它两个数字之一。

公开(公告)号：US20060077793A1

公开(公告)日：2006-04-13

申请号：US11222137

申请日：2005-09-09

申请人： Tohru Kimura ,  Yuichi Atarashi ,  Kiyono Ikenaka ,  Kenji Ogiwara ,  Eiji Nomura

发明人： Tohru Kimura ,  Yuichi Atarashi ,  Kiyono Ikenaka ,  Kenji Ogiwara ,  Eiji Nomura

IPC分类号： G11B7/00

CPC分类号： G11B7/1367 ,  G11B7/1275 ,  G11B7/1374 ,  G11B7/1376 ,  G11B7/13925 ,  G11B2007/0006

摘要： A light flux from the first light source forms a converged spot on first optical information recording medium by only a refraction action of the aspheric surface, or by a combination of the refraction action and an optical action given by at least one of the first phase structure and the second phase structure, a light flux from the second light source forms a converged spot on second optical recording medium by a combination of a refraction action of the aspheric surface and an optical action given by at least one of the first phase structure and the second phase structure, and a light flux from the third light source forms a converged spot on third optical recording medium by a combination of a refraction action of the aspheric surface and an optical action given by at least one of the first phase structure and the second phase structure.

摘要翻译： 来自第一光源的光束仅通过非球面的折射作用或通过由第一相结构中的至少一个给出的折射作用和光学作用的组合在第一光学信息记录介质上形成会聚点 和第二相结构，来自第二光源的光束通过非球面的折射作用和由第一相结构和第二相结构中的至少一个给出的光学作用的组合在第二光学记录介质上形成会聚点 第二相结构，并且来自第三光源的光束通过非球面的折射作用和由第一相结构和第二相结构中的至少一个给出的光学作用的组合在第三光学记录介质上形成会聚点 相结构。

公开(公告)号：US20060016958A1

公开(公告)日：2006-01-26

申请号：US11181461

申请日：2005-07-14

申请人： Kiyono Ikenaka

发明人： Kiyono Ikenaka

IPC分类号： H01J3/14 ,  G02B7/04 ,  G01V8/00

CPC分类号： G11B7/1353 ,  G02B3/08 ,  G02B5/1895 ,  G02B27/4211 ,  G02B27/4277 ,  G11B7/1374 ,  G11B2007/0006

摘要： An objective optical element for use in an optical pickup apparatus which conducts reproducing and/or recording information for first, second and third optical information recording mediums, comprises a first lens which is made of a material A having Abbe's number being within a range of 20 to 40 for d-line and comprises a first diffractive structure in which a cross-sectional form of each of concentric circle patterns is shaped in a stair form, and a second lens which is made of a material B having Abbe's number being within a range of 40 to 70 for d-line and comprises a second diffractive structure in which a cross-sectional form of each of a plural concentric ring-shaped zones is shaped in a saw tooth form.

摘要翻译： 用于进行第一，第二和第三光学信息记录介质的再现和/或记录信息的光学拾取装置中的物镜光学元件包括：第一透镜，其由具有阿贝数的材料A制成，该材料A在20 至40线，并且包括第一衍射结构，其中每个同心圆形图案的横截面形状以楼梯形式成形;以及第二透镜，其由具有阿贝数的材料B制成，其范围为 对于d线为40至70，并且包括第二衍射结构，其中多个同心环形区域中的每一个的横截面形状以锯齿形式成形。

公开(公告)号：US20050270958A1

公开(公告)日：2005-12-08

申请号：US11109735

申请日：2005-04-20

申请人： Kiyono Ikenaka

发明人： Kiyono Ikenaka

IPC分类号： G02B3/10 ,  G02B5/18 ,  G02B13/14 ,  G02B13/18 ,  G02B27/00 ,  G11B7/00 ,  G11B7/135 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/1392

CPC分类号： G11B7/1353 ,  G02B13/146 ,  G02B27/0037 ,  G02B27/4283 ,  G02B27/4288 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

摘要： The present invention includes relates to an objective lens used for reproducing and/or recording of information for at least two types of optical discs including high density discs, and has excellent wavelength characteristics, temperature characteristics and tracking characteristics and to provide an optical pickup apparatus employing this objective lens. An objective lens according to the present invention is used for an optical pickup apparatus at least reproducing and/or recording information for a first optical disc having a protective substrate with a thickness t1 and a second optical disc having a protective substrate with a thickness t2 (0.8×t1≦t2). Each of the light fluxes with a wavelength λ1 and a wavelength λ2 enters into the objective lens and a diffractive structure is formed on the at least one optical surface of the objective lens, signs and values of an optical system magnification of the objective lens m1 and m2 for the light fluxes with wavelength λ1 and λ2 respectively are different each other, and the diffractive structure has a positive diffractive action.

摘要翻译： 本发明涉及用于再现和/或记录包括高密度盘的至少两种类型的光盘的信息的物镜，并且具有优异的波长特性，温度特性和跟踪特性，并且提供一种使用 这个物镜。 根据本发明的物镜用于光学拾取装置，至少再现和/或记录具有厚度为t1的保护衬底的第一光盘和具有厚度为t2的保护衬底的第二光盘的信息（ 0.8xt1 <= t2）。 具有波长λ1和波长λ2的每个光束进入物镜，并且在物镜的至少一个光学表面上形成衍射结构，物镜的光学系统放大率的符号和值以及 波长λ1和λ2的光通量的m2分别相差不大，衍射结构具有正衍射作用。

公开(公告)号：US20050201250A1

公开(公告)日：2005-09-15

申请号：US11076232

申请日：2005-03-10

申请人： Mitsuru Mimori ,  Junji Hashimura ,  Kiyono Ikenaka

发明人： Mitsuru Mimori ,  Junji Hashimura ,  Kiyono Ikenaka

IPC分类号： G02B5/18 ,  G02B13/18 ,  G11B7/00 ,  G11B7/135

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

摘要： An objective optical element for use in an optical pickup apparatus first-third light sources emitting first-third light fluxes and a light converging optical system, includes a first optical path difference providing structure for providing an optical path difference which provides a substantial phase change to the third light flux and does not provide a substantial phase change to the first and second light fluxes; and a second optical path difference providing structure for providing an optical path difference to the first light flux, the second light flux and the third light flux, wherein the objective optical element converges the first-third light fluxes through the protective layers with the thicknesses t1-t3 onto an information recording surface of the first-third optical information media respectively.

摘要翻译： 一种用于光拾取装置的发射第一和第三光束的第一和第三光源的物镜光学元件包括：第一光程差提供结构，用于提供光路差异， 第三光束并且不提供对第一和第二光束的实质相位变化; 以及用于向第一光束，第二光束和第三光束提供光路差的第二光程差提供结构，其中物镜光学元件使第一至第三光束通过保护层会聚，厚度为t1 -t3分别在第一至第三光学信息介质的信息记录表面上。

公开(公告)号：US20050094538A1

公开(公告)日：2005-05-05

申请号：US10976845

申请日：2004-11-01

申请人： Kiyono Ikenaka ,  Shinichiro Saito ,  Yuichi Atarashi

发明人： Kiyono Ikenaka ,  Shinichiro Saito ,  Yuichi Atarashi

IPC分类号： G11B7/00 ,  G11B7/125 ,  G11B7/135

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

摘要： An optical pickup device wherein at least a high density disc such as HD-DVD is compatible with DVD, and securing an amount of light is compatible with correction of chromatic aberration. An a correcting element representing an optical system used for the aforementrioned optical pickup device.

摘要翻译： 一种光拾取装置，其中至少高密度盘如HD-DVD与DVD兼容，并且确保一定量的光与色差校正兼容。 表示用于上述光学拾取装置的光学系统的校正元件。