公开(公告)号：US5110792A

公开(公告)日：1992-05-05

申请号：US431231

申请日：1989-11-03

申请人： Takahiro Nakayama ,  Kunihiro Tamahashi ,  Moriaki Fuyama ,  Hiroyuki Minemura ,  Yoshio Sato ,  Nobuyoshi Tsuboi ,  Hiroaki Koyanagi

发明人： Takahiro Nakayama ,  Kunihiro Tamahashi ,  Moriaki Fuyama ,  Hiroyuki Minemura ,  Yoshio Sato ,  Nobuyoshi Tsuboi ,  Hiroaki Koyanagi

IPC分类号： G02F1/01

CPC分类号： G02F1/01 ,  Y10S505/702 ,  Y10S505/828 ,  Y10S505/848

摘要： An optical modulation method and apparatus uses superconductive oxide material for the optical modulation element. The current, magnetic field, temperature or pressure applied to the superconductive oxide material is varied so as to induce a superconduction-normalconduction transition, and the resulting variation in optical characteristics such as the reflectivity, transmissivity or refractive index of the superconductive oxide material modulate the input light. The method and apparatus are fast in operation and simple in structure. The method and apparatus also detect the variation in the current, magnetic field, temperature or pressure as a change in the reflectivity, transmissivity or refractive index of the superconductive oxide material on the basis of a superconduction-normalconduction transition.

摘要翻译： 光调制方法和装置使用超导氧化物材料作为光调制元件。 改变施加到超导氧化物材料的电流，磁场，温度或压力，以便引起超导 - 正常的导电转变，并且由此导致的超导氧化物材料的光学特性如反射率，透射率或折射率的变化调制 输入光。 该方法和装置操作简单，结构简单。 该方法和装置还根据超导 - 正常的导电转变，检测电流，磁场，温度或压力的变化，作为超导氧化物材料的反射率，透射率或折射率的变化。

公开(公告)号：US4978187A

公开(公告)日：1990-12-18

申请号：US357171

申请日：1989-05-26

申请人： Hiroyuki Minemura ,  Yoshio Sato ,  Nobuyoshi Tsuboi ,  Hiroaki Koyanagi ,  Shinji Ohyama

发明人： Hiroyuki Minemura ,  Yoshio Sato ,  Nobuyoshi Tsuboi ,  Hiroaki Koyanagi ,  Shinji Ohyama

IPC分类号： G11B7/135 ,  G01P3/486 ,  G11B7/12

CPC分类号： G01P3/486 ,  G11B7/124 ,  G11B7/135

摘要： A waveguide path type optical pickup is provided for preventing a returning light from returning back to a light source. A filter for selectively allowing either Te polarized light or TM polarized light to pass through the filter is provided in an optical path from a light source to an optical path deflector. An optical part for changing the polarized state of light is provided in an optical path from the optical path changing part to an information recording medium, thereby prevent a reduction in S/N ratio or reproducing signal.

公开(公告)号：US4937808A

公开(公告)日：1990-06-26

申请号：US151567

申请日：1988-02-02

申请人： Satoshi Shimada ,  Shinji Ohyama ,  Manabu Sato ,  Masahiko Ibamoto ,  Yoshio Sato ,  Nobuyoshi Tsuboi ,  Norifumi Miyamoto ,  Hiroyuki Minemura ,  Hiroaki Koyanagi

发明人： Satoshi Shimada ,  Shinji Ohyama ,  Manabu Sato ,  Masahiko Ibamoto ,  Yoshio Sato ,  Nobuyoshi Tsuboi ,  Norifumi Miyamoto ,  Hiroyuki Minemura ,  Hiroaki Koyanagi

IPC分类号： G02B6/12 ,  G02B6/122 ,  G02B6/124 ,  G11B7/09 ,  G11B7/12 ,  G11B7/135

CPC分类号： G02B6/124 ,  G02B6/12004 ,  G02B6/1245 ,  G11B7/0912 ,  G11B7/1245

摘要： An optical head including a substrate, an optical waveguide formed on the substrate, a light source formed on a portion of the substrate, a collimator lens for converting light from the light source into parallel light rays, an objective lens for focusing light from the collimator lens onto a recording medium and for converting reflected light from the recording medium into parallel light rays, a beam splitter for dividing light from the objective lens into two parts to send out one of the parts in a predetermined direction, a coupling lens for focusing light from the beam splitter on a position, and a photodetector for detecting light from the coupling lens, is disclosed, in which the collimator lens, the objective lens, the beam splitter, the coupling lens and the photodetector are integrated on the substrate, and the collimator lens or an objective lens supporting part is made flexible to vary the position of the focus of the collimator lens or objective lens by piezo-electric elements.

公开(公告)号：US4862440A

公开(公告)日：1989-08-29

申请号：US098969

申请日：1987-09-09

申请人： Norifumi Miyamoto ,  Yoshio Sato ,  Nobuyoshi Tsuboi ,  Satoshi Shimada ,  Hiroshi Sasaki ,  Hiroaki Koyanagi ,  Hiroyuki Minemura

发明人： Norifumi Miyamoto ,  Yoshio Sato ,  Nobuyoshi Tsuboi ,  Satoshi Shimada ,  Hiroshi Sasaki ,  Hiroaki Koyanagi ,  Hiroyuki Minemura

IPC分类号： G11B7/08 ,  G11B7/085 ,  G11B7/09

CPC分类号： G11B7/08547 ,  G11B7/1245 ,  G11B7/1369 ,  G11B7/0912

摘要： An optical head is disclosed, in which a plate-shaped optical wave guide comprises an optical system including a collimator lens, a beam splitter and an objective lens; a laser light source for emitting a laser light in the form of a light beam which is to be impinged on an optical recording medium; and electro-acoustic transducers are disposed between the beam splitter and the objective lens, the transducers being adapted to be driven by the outer electrical signal for producing surface acoustic waves in the optical wave guide, thereby establishing a condensation and rarefaction distribution in refractive index in the optical wave guide which distribution influences the direction of transmission and the degree of focusing of the light beam passing therethrough so that regulation of the tracking and the focal length can be effected without any mechanical movements.

摘要翻译： 公开了一种光学头，其中板状光波导包括包括准直透镜，分束器和物镜的光学系统; 用于发射将要照射在光学记录介质上的光束形式的激光的激光源; 并且电声换能器设置在分束器和物镜之间，换能器适于由外部电信号驱动，以在光波导中产生表面声波，由此在折射率中建立冷凝和稀疏分布 分布影响透射方向的光波导和通过其的光束的聚焦程度，从而可以在没有任何机械运动的情况下实现跟踪调节和焦距。

公开(公告)号：US5177717A

公开(公告)日：1993-01-05

申请号：US754229

申请日：1991-08-28

申请人： Yoshio Sato ,  Atsumi Watanabe ,  Satoshi Shimada ,  Hiroshi Sasaki ,  Nobuyoshi Tsuboi ,  Hideki Nihei ,  Norifumi Miyamoto ,  Hiroaki Koyanagi ,  Hiroyuki Minemura

发明人： Yoshio Sato ,  Atsumi Watanabe ,  Satoshi Shimada ,  Hiroshi Sasaki ,  Nobuyoshi Tsuboi ,  Hideki Nihei ,  Norifumi Miyamoto ,  Hiroaki Koyanagi ,  Hiroyuki Minemura

IPC分类号： G11B7/0055 ,  G11B7/007 ,  G11B7/24

CPC分类号： G11B7/24 ,  G11B7/00557 ,  G11B7/00745

摘要： An information recording and erasing method and apparatus of an optical memory medium including a substrate, a guard film, and an intermediate layer portion so disposed between said substrate and said guard film as to include at least a recording material layer having a phase changing with temperature and include at least one good conductor layer, comprising the steps of supplying magnetic flux varying relatively to said good conductor layer to generate eddy currents within said good conductor layer, and heating said recording material layer with heat generated in said good conductor due to the eddy current loss to effect information recording and erasing with respect to said recording material layer.

摘要翻译： 一种光学存储介质的信息记录和擦除方法和装置，包括基板，保护膜和中间层部分，其设置在所述基板和所述保护膜之间，至少包括具有相变温度的记录材料层 并且包括至少一个良好导体层，包括以下步骤：提供相对于所述良好导体层变化的磁通量，以在所述良好导体层内产生涡流，并且由于涡流而在所述良导体中产生的热量加热所述记录材料层 影响相对于所述记录材料层的信息记录和擦除的电流损耗。

公开(公告)号：US5583840A

公开(公告)日：1996-12-10

申请号：US365053

申请日：1994-12-28

申请人： Hiroyuki Minemura ,  Yoshio Sato ,  Nobuyoshi Tsuboi ,  Hisashi Andoh ,  Masaichi Nagai ,  Isao Ikuta ,  Yoshimi Kato ,  Yoshihito Maeda ,  Tatsuya Sugita ,  Yutaka Sugita

发明人： Hiroyuki Minemura ,  Yoshio Sato ,  Nobuyoshi Tsuboi ,  Hisashi Andoh ,  Masaichi Nagai ,  Isao Ikuta ,  Yoshimi Kato ,  Yoshihito Maeda ,  Tatsuya Sugita ,  Yutaka Sugita

IPC分类号： G06F3/08 ,  G11B7/00 ,  G11B7/0033 ,  G11B7/0037 ,  G11B7/004 ,  G11B7/24 ,  G11B7/258 ,  G11B23/03

CPC分类号： G06K19/044 ,  G11B23/0316 ,  G11B23/032 ,  G11B7/0033 ,  G11B7/0037 ,  G11B7/24

摘要： An optical information handling device in which reflectivity of the conventional reproduction-only type optical disk is lowered to 60% or less and is made equal to the reflectivity of write-once type and rewritable type optical disks, whereby interchangeability in these of these disks is possible.

摘要翻译： 将传统的再现型光盘的反射率降低到60％以下并使其与一次写入式和可重写型光盘的反射率相等的光信息处理装置，由此这些光盘的这些盘的互换性是 可能。

公开(公告)号：US5484686A

公开(公告)日：1996-01-16

申请号：US205768

申请日：1994-03-04

申请人： Yoshihito Maeda ,  Isao Ikuta ,  Hisashi Andoh ,  Masaichi Nagai ,  Yoshimi Katoh ,  Yoshio Sato ,  Nobuyoshi Tsuboi ,  Hiroyuki Minemura

发明人： Yoshihito Maeda ,  Isao Ikuta ,  Hisashi Andoh ,  Masaichi Nagai ,  Yoshimi Katoh ,  Yoshio Sato ,  Nobuyoshi Tsuboi ,  Hiroyuki Minemura

IPC分类号： B41M5/26 ,  G11B7/00 ,  G11B7/003 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/0055 ,  G11B7/24 ,  G11B7/243 ,  G11B7/30 ,  G03C1/72

CPC分类号： G11B7/257 ,  G11B7/00557 ,  G11B7/24 ,  G11B7/243 ,  G11B7/258 ,  G11B2007/24304 ,  G11B2007/24308 ,  G11B2007/2431 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B7/00454 ,  G11B7/0052 ,  G11B7/2531 ,  G11B7/2585 ,  G11B7/2595 ,  Y10S430/146

摘要： The present invention provides an optical recording medium using an amorphous-crystalline phase-change for recording and erasing, wherein reflectivity of an optical recording medium-constituting recording film in an amorphous state is larger than that of the optical recording medium-constituting recording film in a crystalline state, or wherein absorptivity of an optical recording medium-constituting recording film in an amorphous state is smaller than that of the optical recording medium-constituting recording film in a crystalline state.

公开(公告)号：US5371730A

公开(公告)日：1994-12-06

申请号：US618980

申请日：1990-11-28

申请人： Yoshihito Maeda ,  Isao Ikuta ,  Masaichi Nagai ,  Yoshimi Katou ,  Hisashi Andoh ,  Nobuyoshi Tsuboi ,  Hiroyuki Minemura ,  Tatsuya Sugita ,  Yoshio Sato ,  Yutaka Sugita

发明人： Yoshihito Maeda ,  Isao Ikuta ,  Masaichi Nagai ,  Yoshimi Katou ,  Hisashi Andoh ,  Nobuyoshi Tsuboi ,  Hiroyuki Minemura ,  Tatsuya Sugita ,  Yoshio Sato ,  Yutaka Sugita

IPC分类号： G11B23/02 ,  G11B7/00 ,  G11B7/005 ,  G11B7/24 ,  G11B11/10 ,  G11B11/105 ,  G11B23/03

CPC分类号： G11B7/24 ,  G11B23/0313

摘要： The invention relates to an optical memory in which an optical recording medium is built in a case, and also to a memory apparatus. Recording, reproducing and erasing operations are performed by irradiating light via a transparent portion of the case onto the built-in optical recording medium. The optical recording medium built in the case has face vibrations with respect to the case, because it is moved within the case. The present invention is characterized by employing such a construction for optically mitigating irregular fluctuation in reflectivity caused by this face vibration. In the optical memory of the present invention, the reflectivity fluctuation caused by an interference effect made between reflection light from the case and air, and also reflection light from the optical recording medium and air due to the relative deviation in the face vibrations, may be reduced by antireflection films provided in the case and the optical recording medium. In a memory apparatus of the present invention, the abovedescribed memory is mounted, the fluctuation in the reflectivity is monitored and laser power is varied in order to further mitigate the reflection vibrations.

摘要翻译： 本发明涉及一种光学存储器，其中光学记录介质被构建在壳体中，并且还涉及一种存储装置。 通过将壳体的透明部分照射到内置光学记录介质上来进行记录，再现和擦除操作。 因为在壳体内移动，所以内置在该壳体内的光记录介质面对壳体的振动。 本发明的特征在于采用这种结构，用于光学地减轻由这种面部振动引起的反射率的不规则波动。 在本发明的光学存储器中，由于来自壳体的反射光和空气之间的干涉效应引起的反射率波动，以及由于面部振动的相对偏离而来自光学记录介质和空气的反射光，可以是 由设置在壳体中的防反射膜和光记录介质所减少。 在本发明的存储装置中，安装上述存储器，监测反射率的波动，改变激光功率，以进一步减轻反射振动。

公开(公告)号：US5311494A

公开(公告)日：1994-05-10

申请号：US788242

申请日：1991-11-05

申请人： Tatsuya Sugita ,  Yoshio Sato ,  Nobuyoshi Tsuboi ,  Hiroyuki Minemura ,  Hisashi Andoh

发明人： Tatsuya Sugita ,  Yoshio Sato ,  Nobuyoshi Tsuboi ,  Hiroyuki Minemura ,  Hisashi Andoh

IPC分类号： G11B7/0033 ,  G11B7/0037 ,  G11B17/04 ,  G11B23/03 ,  G11B7/00

CPC分类号： G06K19/044 ,  G11B17/0408 ,  G11B23/0308 ,  G11B23/0316 ,  G11B7/0033 ,  G11B7/0037

摘要： An overwritable optical disk apparatus in which a finite conjugate optical system is employed. The apparatus comprises an optical head for converging diffused light from a light source onto an optical disk for performing data write/read operation, a driving unit for rotating the disk and a beam splitter for guiding the light reflected from the optical disk to a photodetector for detecting light reflected from the optical disk. Influence of disk displacement occurring in accompanying the rotation of the disk and disk eccentricity are suppressed to a minimum by encasing rotatably the optical disk within a credit card size casing which is adapted to be loaded and held stationarily in the optical disk apparatus. Thin structure of the optical head and miniaturization of the optical disk apparatus are realized with light utilization efficiency for data write/read operation being increased.

摘要翻译： 使用有限共轭光学系统的可重写光盘装置。 该装置包括用于将来自光源的漫射光会聚到用于执行数据写入/读取操作的光盘上的光学头，用于旋转盘的驱动单元和用于将从光盘反射的光引导到光电检测器的光束分离器 检测从光盘反射的光。 通过将光盘可旋转地封装在信用卡尺寸的壳体内，适用于光盘装置中的固定和固定，从而将伴随盘的旋转和盘偏心率的盘位移的影响抑制到最小。 通过提高数据写入/读取操作的光利用效率来实现光学头的薄型结构和光盘装置的小型化。

公开(公告)号：US5317556A

公开(公告)日：1994-05-31

申请号：US622609

申请日：1990-12-05

申请人： Nobuyoshi Tsuboi ,  Yoshio Sato ,  Hiroyuki Minemura ,  Hisashi Andoh ,  Masaichi Nagai ,  Isao Ikuta ,  Yoshimi Katou ,  Yoshihito Maeda ,  Tatsuya Sugita ,  Yutaka Sugita

发明人： Nobuyoshi Tsuboi ,  Yoshio Sato ,  Hiroyuki Minemura ,  Hisashi Andoh ,  Masaichi Nagai ,  Isao Ikuta ,  Yoshimi Katou ,  Yoshihito Maeda ,  Tatsuya Sugita ,  Yutaka Sugita

IPC分类号： G11B7/00 ,  G11B7/0033 ,  G11B7/004 ,  G11B7/0055 ,  G11B7/08 ,  G11B7/12 ,  G11B7/135 ,  G11B7/24 ,  G11B23/03

CPC分类号： G11B23/0316 ,  G11B7/12 ,  G11B7/135 ,  G11B7/24 ,  G11B7/0033

摘要： There is provided a compact and thin optical disk unit as a memory unit suitable for a portable computer such as a book type computer and a portable recording/reproducing apparatus. In the optical disk unit, the diameter of an objective lens is limited and a beam shaping prism, a beam splitter, a mirror and a 1/4 wavelength plate are formed into a unitary structure to make easy the optical axis adjustment of an optical head and ensure highly accurate assembling.

摘要翻译： 提供了一种紧凑而细的光盘单元，作为适用于诸如书本型计算机和便携式记录/再现装置的便携式计算机的存储单元。 在光盘单元中，物镜的直径受到限制，光束整形棱镜，光束分离器，反射镜和1/4波片形成为一体的结构，使光头的光轴调整变得容易 并确保高精度的组装。