公开(公告)号：US07305689B2

公开(公告)日：2007-12-04

申请号：US10833540

申请日：2004-07-15

Applicant: Naohiro Netsu ,  Yoshitaka Aoki ,  Tetsu Watanabe ,  Kazuhiko Fujiie ,  Yasuaki Maeda ,  Takuya Kaeriyama

Inventor： Naohiro Netsu ,  Yoshitaka Aoki ,  Tetsu Watanabe ,  Kazuhiko Fujiie ,  Yasuaki Maeda ,  Takuya Kaeriyama

IPC: G11B7/24

CPC classification number: B29C69/001 ,  B29C2793/0009 ,  B29L2017/005 ,  G11B7/007 ,  G11B7/24 ,  G11B7/24038 ,  G11B7/24085 ,  G11B11/10508 ,  G11B11/10582 ,  G11B17/03 ,  G11B23/0035 ,  G11B23/0307 ,  G11B23/0308 ,  G11B23/0317

Abstract: An optical recording medium is provided which has a substrate and a signal recording layer provided on the substrate and in which an information signal is recorded in the form of microscopic pits. A light beam is focused on the signal recording layer and some change of the light beam carried by a return light from the signal recording layer is detected to read the information signal recorded on the signal recording layer. The optical recording medium has a diameter of 65 mm or less and a thickness of 0.4 to 0.7 mm. An information signal recording area extends outwardly from a radial position of 12.5 mm or less from the center of the medium. The ratio in area between the information signal recording area and non-signal recording area is 3.4 or more. The storage capacity of this medium is 2 gigabytes or more. The optical recording medium has formed at the center thereof a center hole around which an annular table-abutment convexing to one side of the medium is formed. A magnetic-clamping hub is installed in the center hole and thus the medium is magnetically clamped to a rotation driving mechanism of an optical recording and/or reproducing apparatus. The compactness and high density of recording of the optical recording medium will contribute greatly to a further compact structure of a recording and/or reproducing apparatus in which the medium is to be used.

Abstract translation: 提供了一种光记录介质，其具有基板和设置在基板上的信号记录层，其中以微观凹坑的形式记录信息信号。 光束聚焦在信号记录层上，并且检测由来自信号记录层的返回光所携带的光束的一些变化，以读取记录在信号记录层上的信息信号。 光记录介质的直径为65mm以下，厚度为0.4〜0.7mm。 信息信号记录区域从介质中心的12.5mm或更小的径向位置向外延伸。 信息信号记录区域与非信号记录区域之间的面积比为3.4以上。 该介质的存储容量为2 GB或更多。 光记录介质在其中心处形成有中心孔，在该中心孔处形成有凸起到介质一侧的环形台面邻接。 磁性夹紧轮毂安装在中心孔中，因此介质被磁力夹紧到光学记录和/或再现装置的旋转驱动机构。 光记录介质的紧凑性和高密度记录对于使用介质的记录和/或再现装置的进一步紧凑结构将有很大的贡献。

公开(公告)号：US20060209432A1

公开(公告)日：2006-09-21

申请号：US11223947

申请日：2005-09-13

Applicant: Masahiro Yamada ,  Akira Kouchiyama ,  Tetsu Watanabe

Inventor： Masahiro Yamada ,  Akira Kouchiyama ,  Tetsu Watanabe

IPC: G02B9/00

CPC classification number: G02B6/4214 ,  G02B3/0087 ,  G02B6/262 ,  G02B6/30 ,  G02B6/4203 ,  G02B6/4204 ,  G02B6/4246

Abstract: A first optical device according to the present invention comprises a base made of a first optical material and a second optical material having a refractive index different from that of the first optical material, and the base has a concavity, and the second optical material is filled in this concavity. A second optical device according to the present invention comprises a base made of a first optical material and a second optical material having a refractive index different from the first optical material, and the base comprises first and second faces facing each other, a first concavity is formed in the first face and a second concavity is formed in the second face, and the second optical material is filled in the first and second concavities.

公开(公告)号：US07064906B2

公开(公告)日：2006-06-20

申请号：US11072504

申请日：2005-03-07

Applicant: Masahiro Yamada ,  Takahiro Miura ,  Takakiyo Kanazawa ,  Tetsu Watanabe ,  Sunao Aoki

Inventor： Masahiro Yamada ,  Takahiro Miura ,  Takakiyo Kanazawa ,  Tetsu Watanabe ,  Sunao Aoki

IPC: G02B9/00 ,  G02B9/08 ,  B29D11/00

CPC classification number: G11B7/1374 ,  G11B7/1378 ,  G11B7/1387 ,  G11B7/139

Abstract: An optical pickup device and optical disc apparatus of the present invention include an optical element that prevents the incidence of light on unnecessary portions of the optical element so that stray light and noise are eliminated. The optical element include at least one substrate having a plurality of lens substrates that have embedded lenses made of a material with a higher refractive index than the at least one substrate. A shielding means limits the optical path so that incident light propagates only within a prescribed optical path formed on a light incidence-side or emission-side surface of one of the lens substrates. In addition, the shielding means is formed from an absorptive or reflective film placed in a region outside the prescribed optical path or through machining the region outside the prescribed optical path.

Abstract translation: 本发明的光学拾取装置和光盘装置包括防止光学元件的不必要部分发生光的光学元件，从而消除杂散光和噪声。 光学元件包括具有多个透镜基板的至少一个基板，该多个透镜基板具有由比至少一个基板更高的折射率的材料制成的嵌入式透镜。 屏蔽装置限制光路，使得入射光仅在形成在一个透镜基板的光入射侧或发射侧表面上的规定光路内传播。 此外，屏蔽装置由放置在规定光路外部的区域的吸收或反射膜形成，或者通过加工规定光路外部的区域形成。

公开(公告)号：US20050083791A1

公开(公告)日：2005-04-21

申请号：US10501159

申请日：2003-02-19

Applicant: Tetsu Watanabe ,  Takakiyo Kanazawa ,  Kenji Yamamoto ,  Masahiro Yamada ,  Tadashi Taniguchi

Inventor： Tetsu Watanabe ,  Takakiyo Kanazawa ,  Kenji Yamamoto ,  Masahiro Yamada ,  Tadashi Taniguchi

IPC: G11B7/09 ,  G11B7/12 ,  G11B11/105 ,  G11B7/00

CPC classification number: G11B7/0901 ,  G11B7/0908 ,  G11B7/0937 ,  G11B7/123 ,  G11B7/1376 ,  G11B7/1387 ,  G11B11/10543 ,  G11B11/10554 ,  G11B11/10569 ,  G11B11/10576 ,  G11B11/1058 ,  G11B2007/13727

Abstract: A compact and light flying head type magneto-optical head apparatus is provided. The magneto-optical head apparatus (1) of the present invention comprises a suspension (12) whose one end is fixed to a lower surface of an arm (11), a slider (13) fixed to a free end of the suspension (12), and a magnetic modulation coil (14) and an object lens (15) mounted on the slider (13). The slider (13) mounted with the magnetic modulation coil (14) and the object lens (15) floats due to a wind pressure caused by rotation of an MO disk (3). The magneto-optical head apparatus (1) is further provided with a collimeter lens (21) between a light source (71) and the object lens (15) in a hybrid optical apparatus (7) provided to the arm (11), and a position of the collimeter lens (21) can be adjusted vertically along an optical axis O-O by a collimeter actuator (23), so that optical conditions between the light source (71) and the object lens (15) are improved.

Abstract translation: 提供了一种紧凑且轻型的飞头型磁光头装置。 本发明的磁光头装置（1）包括悬臂（12），其一端固定在臂（11）的下表面，滑块（13）固定在悬架（12）的自由端 ）和安装在滑块（13）上的磁调制线圈（14）和物镜（15）。 安装有磁调制线圈（14）和物镜（15）的滑块（13）由于由MO盘（3）的旋转引起的风压而浮起。 磁光头装置（1）在设置在臂（11）上的混合光学装置（7）中还在光源（71）和物镜（15）之间设置有碰撞透镜（21），以及 可以通过碰撞促动器（23）沿着光轴O0垂直地调节碰撞透镜（21）的位置，从而提高光源（71）和物镜（15）之间的光学条件。

公开(公告)号：US06496450B2

公开(公告)日：2002-12-17

申请号：US09730233

申请日：2000-12-05

Applicant: Tetsu Watanabe

Inventor： Tetsu Watanabe

IPC: G11B1100

CPC classification number: G11B7/1374 ,  G11B7/0948 ,  G11B7/122 ,  G11B7/24056 ,  G11B11/10554 ,  G11B11/10576 ,  G11B11/1058 ,  G11B11/10584 ,  G11B2007/13727

Abstract: An optical recording/reproducing apparatus accessing a recording layer of an optical rotating recording medium using an accessing means positioned a predetermined gap away from a surface of said optical rotating recording medium and mounted with an object lens, wherein a thickness of a protective transparent layer of said optical rotating recording medium, a ratio of a defect area with respect to a beam spot area, and the above predetermined gap are values determined by the conditions defined in the following inequalities: G 1 ≤ t · k ⁢   ⁢ π × tan ⁢ { sin - 1 ⁡ ( NA n ) } or t ≥ G k ⁢   ⁢ π · tan ⁢ { sin - 1 ⁡ ( NA n ) } where, G: gap separating accessing means from surface of optical rotating recording medium, t: thickness of transparent layer positioned at surface of recording medium of optical rotating recording medium, n: refractive index of transparent layer, and NA: numerical aperture of optical system including object lens.

Abstract translation: 一种光学记录/再现装置，其使用访问装置访问光学旋转记录介质的记录层，所述访问装置定位在远离所述光学旋转记录介质的表面并且安装有物镜的预定间隙，其中保护透明层的厚度 所述光学旋转记录介质，缺陷面积相对于光束斑点面积的比率和上述预定间隙是由以下不等式中定义的条件确定的值：或其中，G：间隙分离存取装置与光学旋转表面 记录介质，t：位于光学旋转记录介质的记录介质表面的透明层的厚度，n：透明层的折射率，以及NA：包括物镜的光学系统的数值孔径。

公开(公告)号：US5838646A

公开(公告)日：1998-11-17

申请号：US818552

申请日：1997-03-14

Applicant: Tetsu Watanabe ,  Yoshio Aoki

Inventor： Tetsu Watanabe ,  Yoshio Aoki

IPC: G11B7/007 ,  G11B7/135 ,  G11B7/24 ,  G11B7/243 ,  G11B11/105 ,  G11B11/00

CPC classification number: G11B7/00718 ,  G11B11/10532 ,  G11B11/10534 ,  G11B11/10541 ,  G11B11/10543 ,  G11B11/10554 ,  G11B11/10558 ,  G11B11/10584 ,  G11B7/0037 ,  G11B7/1372 ,  G11B7/1374 ,  G11B7/24038 ,  G11B7/24059 ,  G11B2007/13727 ,  G11B7/007 ,  G11B7/243

Abstract: An optical disc system uses an optical disc with a light-transmitting cover and an objective lens for bundling or focusing a light beam on a recording layer of the optical disc in order to perform recording and/or reproducing of information. The thickness of the light-transmitting cover falls within the range of 0.05 mm to 0.6 mm, the numerical aperture (NA) of the objective lens is set to fall within the range of 0.55 to 1.10, and the wavelength of the light beam is selected to be between 100 nm to 780 nm.

Abstract translation: 光盘系统使用具有透光盖和物镜的光盘，用于将光束聚集或聚焦在光盘的记录层上，以便执行信息的记录和/或再现。 透光罩的厚度在0.05mm至0.6mm的范围内，物镜的数值孔径（NA）设定在0.55至1.10的范围内，并且选择光束的波长 在100nm至780nm之间。

公开(公告)号：US5648944A

公开(公告)日：1997-07-15

申请号：US662268

申请日：1996-06-12

Applicant: Kiyoshi Ohmori ,  Tetsu Watanabe ,  Katsuhiro Seo ,  Junichi Kudo

Inventor： Kiyoshi Ohmori ,  Tetsu Watanabe ,  Katsuhiro Seo ,  Junichi Kudo

IPC: G11B33/12 ,  G11B7/085 ,  G11B11/105 ,  G11B17/04 ,  G11B20/12 ,  G11B7/00

CPC classification number: G11B11/10502 ,  G11B11/10558 ,  G11B11/10571 ,  G11B17/0436 ,  G11B20/1258 ,  G11B11/10595 ,  G11B7/08582

Abstract: A disc recording and/or reproducing apparatus including a signal recording/reproducing section for recording and/or reproducing information signals on a disc 64 mm in diameter housed in a cartridge main body to form a disc cartridge, a loading mechanism for loading or unloading the disc cartridge on or from the signal recording/reproducing section and a control circuit controlling the recording/reproducing operation of the recording/reproducing section. The disc has a signal recording part divided into plural signal recording zones of substantially equal line recording density across the inner and the outer peripheries of the disc. The signal recording/reproducing section, the loading mechanism and the control circuit are housed in a casing which is 70 mm or less in width, 100 mm or less in length and 24.5 mm or less in height and which is provided with a disc inserting opening. The apparatus may be reduced in size without decreasing the recording capacity.

Abstract translation: 一种盘记录和/或再现装置，包括用于在直径为64mm的盘片上记录和/或再现信息信号的信号记录/再现部分，其容纳在盒主体中以形成盘盒，用于装载或卸载 或者来自信号记录/再现部分的光盘盒，以及控制记录/再现部分的记录/再现操作的控制电路。 盘具有信号记录部分，被划分成跨越盘的内周和外周的基本相等的行记录密度的多个信号记录区。 信号记录/再现部分，装载机构和控制电路容纳在宽度为70mm或更小，长度为100mm或更小并且高度为24.5mm或更小的壳体中，并且设置有盘插入口 。 该装置的尺寸可以减小而不降低记录容量。

公开(公告)号：US5627810A

公开(公告)日：1997-05-06

申请号：US662274

申请日：1996-06-12

Applicant: Kiyoshi Ohmori ,  Tetsu Watanabe ,  Katsuhiro Seo ,  Junichi Kudo

Inventor： Kiyoshi Ohmori ,  Tetsu Watanabe ,  Katsuhiro Seo ,  Junichi Kudo

IPC: G11B33/12 ,  G11B11/105 ,  G11B17/04 ,  G11B17/046 ,  G11B19/02 ,  G11B20/10 ,  G11B20/12 ,  G11B25/04 ,  G11B7/00

CPC classification number: G11B11/10558 ,  G11B11/10576 ,  G11B11/10595 ,  G11B17/043 ,  G11B19/02 ,  G11B20/10527 ,  G11B20/1258 ,  G11B25/043 ,  G11B33/121 ,  G11B11/10502 ,  G11B11/10571

Abstract: A disc recording and/or reproducing apparatus including a signal recording/reproducing section for recording and/or reproducing information signals on a disc 86 mm in diameter housed in a cartridge main body to form a disc cartridge, a loading mechanism for loading or unloading the disc cartridge on or from the signal recording/reproducing section and a control circuit controlling the recording/reproducing operation of the recording/reproducing section. The disc has a signal recording part divided into plural signal recording zones of substantially equal line recording density across the inner and the outer peripheries of the disc. The signal recording/reproducing section, the loading mechanism and the control circuit are housed in a casing which is 101.6 mm or less in width, 150 mm or less in length and 25.4 mm or less in height and which is provided with a disc inserting opening. The apparatus may be reduced in size without decreasing the recording capacity.

Abstract translation: 一种盘记录和/或再现装置，包括用于在容纳在盒主体中的直径为86mm的盘上记录和/或再现信息信号以形成盘盒的信号记录/再现部分，用于装载或卸载 或者来自信号记录/再现部分的光盘盒，以及控制记录/再现部分的记录/再现操作的控制电路。 盘具有信号记录部分，被划分成跨越盘的内周和外周的基本相等的行记录密度的多个信号记录区。 信号记录/再现部分，装载机构和控制电路容纳在宽度为101.6mm或更小，长度为150mm或更小，高度为25.4mm或更小的壳体中，并且设置有盘插入口 。 该装置的尺寸可以减小而不降低记录容量。

公开(公告)号：US5414687A

公开(公告)日：1995-05-09

申请号：US150402

申请日：1993-11-10

Applicant: Kiyoshi Ohmori ,  Tetsu Watanabe ,  Katsuhiro Seo ,  Junichi Kudo

Inventor： Kiyoshi Ohmori ,  Tetsu Watanabe ,  Katsuhiro Seo ,  Junichi Kudo

IPC: G11B33/12 ,  G11B11/105 ,  G11B17/04 ,  G11B17/046 ,  G11B19/02 ,  G11B20/10 ,  G11B20/12 ,  G11B25/04 ,  G11B7/00

CPC classification number: G11B11/10558 ,  G11B11/10576 ,  G11B11/10595 ,  G11B17/043 ,  G11B19/02 ,  G11B20/10527 ,  G11B20/1258 ,  G11B25/043 ,  G11B33/121 ,  G11B11/10502 ,  G11B11/10571

Abstract: A disc recording and/or reproducing apparatus including a signal recording/reproducing section for recording and/or reproducing information signals on a disc 86 mm in diameter housed in a cartridge main body to form a disc cartridge, a loading mechanism for loading or unloading the disc cartridge on or from the signal recording/reproducing section and a control circuit controlling the recording/reproducing operation of the recording/reproducing section. The disc has a signal recording part divided into plural signal recording zones of substantially equal line recording density ac ross the inner and the outer peripheries of the disc. The signal recording/reproducing section, the loading mechanism and the control circuit are housed in a casing which is 101.6 mm or less in width, 150 mm or less in length and 25.4 mm or less in height and which is provided with a disc inserting opening. The apparatus may be reduced in size without decreasing the recording capacity.

Abstract translation: 一种盘记录和/或再现装置，包括用于在容纳在盒主体中的直径为86mm的盘上记录和/或再现信息信号以形成盘盒的信号记录/再现部分，用于装载或卸载 或者来自信号记录/再现部分的光盘盒，以及控制记录/再现部分的记录/再现操作的控制电路。 光盘具有分成多个信号记录区的信号记录部分，该信号记录区具有大致相等的记录密度，该光盘的内周和外周。 信号记录/再现部分，装载机构和控制电路容纳在宽度为101.6mm或更小，长度为150mm或更小，高度为25.4mm或更小的壳体中，并且设置有盘插入口 。 该装置的尺寸可以减小而不降低记录容量。

公开(公告)号：US5189650A

公开(公告)日：1993-02-23

申请号：US617803

申请日：1990-11-26

Applicant: Tetsu Watanabe ,  Tamotsu Yamagami ,  Tetsuji Kawashima

Inventor： Tetsu Watanabe ,  Tamotsu Yamagami ,  Tetsuji Kawashima

IPC: G11B11/10 ,  G11B11/105 ,  G11B20/10

CPC classification number: G11B20/10203 ,  G11B11/10515 ,  G11B20/10037

Abstract: In a magneto-optical signal reproducing apparatus for reading out a signal recorded on a magneto-optical recording medium by an optical pickup device so as to provide a magneto-optical signal which, in turn, is level-discriminated on the basis of a reference level to reproduce data therefrom, the reference level is controlled in accordance with a level of an in-phase signal component provided from the optical pickup device, thereby enabling stable data reproduction.