公开(公告)号：US20070064574A1

公开(公告)日：2007-03-22

申请号：US11521664

申请日：2006-09-15

申请人： Yoshiaki Komma ,  Seiji Nishino ,  Hidenori Wada ,  Teruhiro Shiono ,  Sadao Mizuno ,  Hiroshi Shiroiwa

发明人： Yoshiaki Komma ,  Seiji Nishino ,  Hidenori Wada ,  Teruhiro Shiono ,  Sadao Mizuno ,  Hiroshi Shiroiwa

IPC分类号： G11B7/135

CPC分类号： G11B7/1353 ,  G11B7/123 ,  G11B7/1275 ,  G11B2007/0006

摘要： A transmission diffraction grating body including a base material being substantially transparent with respect to wavelength λ1 and having a refractive index n0; another base material being substantially transparent with respect to wavelength λ1 and having a refractive index n1, which is formed on the base material having a refractive index n0; and a relief diffraction grating formed on the base material having a refractive index n1; wherein the refractive indexes n1 and n0 satisfy the relationship: n1>n0. Thus, the base material having a refractive index n1 can be formed of a high refractive index material, and when the depth of grating of the diffraction grating is set so that the diffraction grating diffracts the light with wavelength λ1 and does not diffract the light with wavelength λ2, the depth of grating of the diffraction grating can be made to be shallow, thus preventing the loss of the amount of the light with wavelength λ1. Furthermore, since base materials each having a different refractive index are bonded to each other to form a diffraction grating body, it is possible to minimize the use amount of the relatively expensive material having a high refractive index. Furthermore, since the most of the diffraction grating body can be formed of a material having a low refractive index, it is possible to lower the height of the diffraction index body.

摘要翻译： 透射衍射光栅体，其包括相对于波长λ1基本上透明且具有折射率n 0的基材; 另一种基材相对于波长λ1基本上是透明的，并且具有折射率n 1，其形成在折射率为n 0的基材上; 以及形成在折射率为n 1的基材上的浮雕衍射光栅; 其中折射率n 1和n 0满足关系：n 1> n 0。 因此，具有折射率n 1的基材可以由高折射率材料形成，并且当衍射光栅的光栅的深度被设置为使得衍射光栅衍射具有波长λ1的光并且不衍射 具有波长λ2的光，衍射光栅的光栅深度可以变浅，从而防止波长λ1的光量的损失。 此外，由于各自具有不同折射率的基材彼此结合以形成衍射光栅体，所以可以使具有高折射率的相对昂贵的材料的使用量最小化。 此外，由于衍射光栅体的大部分可以由具有低折射率的材料形成，因此可以降低衍射指数体的高度。

公开(公告)号：US20050152036A1

公开(公告)日：2005-07-14

申请号：US11049232

申请日：2005-02-01

申请人： Teruhiro Shiono ,  Hidenori Wada ,  Seiji Nishino

发明人： Teruhiro Shiono ,  Hidenori Wada ,  Seiji Nishino

IPC分类号： G02B5/18 ,  G11B7/00 ,  G11B7/125 ,  G11B7/135

CPC分类号： G11B7/1275 ,  G02B5/1871 ,  G11B2007/0006

摘要： A diffractive optical element emits substantially zero order diffracted light when light with a wavelength of 0.35 μm to 0.45 μm is incident and emits substantially first-order diffracted light when light with a wavelength of 0.6 μm to 0.7 μm is incident. The diffractive optical element includes a substrate and a grating portion formed on the substrate. The grating portion has a step-wise cross section with any one of levels selected from four levels, five levels and six levels. The diffractive optical element emits substantially zero-order diffracted light when light with a first wavelength λ1 satisfying the relationship: 0.35 μm≦λ1≦0.45 μm is incident and emits substantially first-order diffracted light when light with a second wavelength λ2 satisfying the relationship: 0.6 μm≦λ2≦0.7 μm is incident.

摘要翻译： 当波长为0.35μm至0.45μm的光入射时，衍射光学元件发射基本为零级的衍射光，并且当入射具有0.6μm至0.7μm波长的光时，发射基本上为一级的衍射光。 衍射光学元件包括基板和形成在基板上的光栅部分。 光栅部分具有从四个级别，五个级别和六个级别中选择的任何一个级别的逐步横截面。 当具有满足以下关系的第一波长λ1的光时，衍射光学元件发射基本为零级的衍射光，即当第二波长λ2的光满足以下条件时，基本上为一级衍射光 关系：0.6 mum <= lambda2 <= 0.7 mum是事件。

公开(公告)号：US06584059B1

公开(公告)日：2003-06-24

申请号：US09501380

申请日：2000-02-09

申请人： Tetsuo Saimi ,  Seiji Nishino ,  Hidenori Wada ,  Teruhiro Shiono ,  Keiichi Matsuzaki

发明人： Tetsuo Saimi ,  Seiji Nishino ,  Hidenori Wada ,  Teruhiro Shiono ,  Keiichi Matsuzaki

IPC分类号： G11B700

CPC分类号： G11B7/1353 ,  G11B7/0903 ,  G11B7/131 ,  G11B7/1369 ,  G11B7/14 ,  G11B2007/0006

摘要： An information recording and reproducing apparatus in accordance with the present invention has a radiation light source, a collimator turning a light beam emitted from the radiation light source into substantially parallel light, a light beam convergence member focusing the light beam on an information carrier, a light beam polarization-branching member branching the light beam by polarization, a variable wave plate located between the collimator and the light beam convergence member, photo detectors receiving the light beam branched by the light beam polarization-branching member and outputting a current according to an incident light quantity, and an output level judging member judging whether an output of the photo detectors is larger or smaller than a predetermined value. When the photo detectors receive a small light quantity because the information carrier is highly birefringent, the variable wave plate is switched from a ¼ wavelength plate to a zero-wave plate, thus constantly obtaining a stable reproducing signal with an excellent S/N.

摘要翻译： 根据本发明的信息记录和再现装置具有辐射光源，将从辐射光源发射的光束转换成基本平行的光的准直仪，将光束聚焦在信息载体上的光束会聚部件， 光束偏振分支部件通过偏振分支光束，位于准直器和光束会聚部件之间的可变波片，接收由光束偏振分支部件分支的光束的光检测器，并根据 以及判断光电检测器的输出是否大于或小于预定值的输出电平判断部件。 由于信息载体高度双折射，当光电检测器接收到小的光量时，可变波片从1/4波片切换到零波片，从而不断获得具有优异S / N的稳定再现信号。

公开(公告)号：US08018801B2

公开(公告)日：2011-09-13

申请号：US10563274

申请日：2004-11-01

申请人： Teruhiro Shiono ,  Seiji Nishino ,  Tatsuo Itoh

发明人： Teruhiro Shiono ,  Seiji Nishino ,  Tatsuo Itoh

IPC分类号： G11B7/00

CPC分类号： G11B7/1381 ,  B82Y10/00 ,  G11B7/00452 ,  G11B7/00454 ,  G11B7/00455 ,  G11B7/1275 ,  G11B7/1365 ,  G11B7/24038 ,  G11B7/24085 ,  G11B2007/0013

摘要： An information recording medium of the optical information reproduction device of the present invention includes a recording unit capable of recording information three-dimensionally and provided with a track, and information is recorded by forming a plurality of recording marks along the track of the recording unit by a mark length recording method. When the track direction of the recording marks is assumed to be their longitudinal direction and the direction perpendicular to the track direction is assumed to be their lateral direction, with the present invention, for recording marks located substantially in the same plane, the total area of elongated recording marks, whose longitudinal length is greater than their lateral length, is greater than the total area of recording marks having other than elongated shapes. The optical information reproduction device of the present invention includes a first light source for emitting a reproduction light having a wavelength λ1, an objective lens for focusing the reproduction light on the recording unit, and a first photodetector for detecting a reproduction signal from the reflected light from the recording unit. The focused reproduction light includes as its main component a polarized light component that is polarized perpendicular to the track direction. Also, the recording unit has a track pitch of no more than 1.3 times the wavelength λ1of the reproduction light.

摘要翻译： 本发明的光信息再现装置的信息记录介质包括一个记录单元，它能够三维地记录信息并提供一个轨道，并且通过沿记录单元的轨道形成多个记录标记来记录信息。 标记长度记录方法。 假设记录标记的轨道方向为纵向方向，并且垂直于轨迹方向的方向被认为是其横向方向，根据本发明，对于基本位于同一平面上的记录标记， 其长度大于其横向长度的细长记录标记大于具有不同于细长形状的记录标记的总面积。 本发明的光学信息再现装置包括用于发射具有波长λ1的再现光的第一光源，用于将再现光聚焦在记录单元上的物镜和用于检测来自反射光的再现信号的第一光电检测器 从录音单元。 聚焦再现光包括垂直于轨道方向偏振的偏振光分量作为其主要分量。 此外，记录单元的轨道间距不大于再现光的波长λ1的1.3倍。

公开(公告)号：US07898925B2

公开(公告)日：2011-03-01

申请号：US11667765

申请日：2005-11-08

申请人： Teruhiro Shiono ,  Tatsuo Itoh ,  Seiji Nishino

发明人： Teruhiro Shiono ,  Tatsuo Itoh ,  Seiji Nishino

IPC分类号： G11B7/00

CPC分类号： G11B7/257 ,  B82Y10/00 ,  G11B7/00455 ,  G11B7/24038 ,  G11B7/244 ,  G11B7/245 ,  G11B7/25 ,  G11B7/2533 ,  G11B7/2534 ,  G11B7/2538 ,  G11B2007/24612 ,  G11B2007/24624

摘要： An information recording medium includes a substrate and a recording portion having recording layers on the substrate, wherein the recording portion is capable of three-dimensional recording by changing an optical constant of the recording layers by irradiation of recording light, and a first reflected-light reducing portion for reducing reflected lights of reproducing light from the substrate side is provided at a side opposite to an incident side of the reproducing light with respect to the recording portion, and an optical information recording/reproducing apparatus records and reproduces information to and from the medium.

摘要翻译： 信息记录介质包括基板和在基板上具有记录层的记录部分，其中通过记录光的照射改变记录层的光学常数，记录部分能够进行三维记录，并且第一反射光 用于减少从基板侧再现光的反射光的减少部分设置在与记录部分的再现光的入射侧相对的一侧，并且光学信息记录/再现装置记录和再现信息 中。

公开(公告)号：US20080316898A1

公开(公告)日：2008-12-25

申请号：US10595995

申请日：2005-04-20

申请人： Tatsuo Itoh ,  Teruhiro Shiono ,  Seiji Nishino

发明人： Tatsuo Itoh ,  Teruhiro Shiono ,  Seiji Nishino

IPC分类号： G11B7/135

CPC分类号： G11B7/1381 ,  G02B21/0032 ,  G02B21/006 ,  G02B21/008 ,  G11B2007/0013

摘要： In a confocal optical system provided with a light source 13, a first focusing means 14, a second focusing means 16, an aperture 17, and a detector 18, the detector has plural light reception regions. A position displacement is detected by detecting an intensity distribution of an image caused by a position displacement between the focusing spot of the second focusing means 16 and the aperture 17 by the detector 18, and the position displacement is corrected by controlling the aperture position using driving means 19 and control means 20. Also, a position displacement of the aperture 17 in the optical axis direction is detected and corrected on the basis of a change in output of the detector 18 by oscillating the aperture 17 in the optical axis direction.

摘要翻译： 在具有光源13，第一聚焦装置14，第二聚焦装置16，孔17和检测器18的共焦光学系统中，检测器具有多个光接收区域。 通过检测由第二聚焦装置16的聚焦光点与检测器18之间的位置偏移引起的图像的强度分布来检测位置位移，并且通过使用驱动来控制光圈位置来校正位置偏移 装置19和控制装置20.此外，通过使光圈17沿光轴方向振荡，基于检测器18的输出变化来检测和校正孔17在光轴方向上的位置偏移。

公开(公告)号：US20080130458A1

公开(公告)日：2008-06-05

申请号：US11667765

申请日：2005-11-08

申请人： Teruhiro Shiono ,  Tatsuo Itoh ,  Seiji Nishino

发明人： Teruhiro Shiono ,  Tatsuo Itoh ,  Seiji Nishino

IPC分类号： G11B7/00

CPC分类号： G11B7/257 ,  B82Y10/00 ,  G11B7/00455 ,  G11B7/24038 ,  G11B7/244 ,  G11B7/245 ,  G11B7/25 ,  G11B7/2533 ,  G11B7/2534 ,  G11B7/2538 ,  G11B2007/24612 ,  G11B2007/24624

摘要： An information recording medium includes a substrate and a recording portion having recording layers on the substrate, wherein the recording portion is capable of three-dimensional recording by changing an optical constant of the recording layers by an irradiation of a recording light, and a first reflected-light reducing portion for reducing reflected lights of a reproducing light from the substrate side is provided at a side opposite to an incident side of the reproducing light with respect to the recording portion, and an optical information recording/reproducing apparatus records and reproduces information to and from the medium.

摘要翻译： 信息记录介质包括基板和在基板上具有记录层的记录部分，其中记录部分能够通过记录光的照射改变记录层的光学常数而进行三维记录，并且第一反射 在与再现光的相对于记录部分的入射侧相反的一侧设置有用于减少来自基板侧的再现光的反射光的减光部分，并且光学信息记录/再现装置将信息记录和再现 和从媒介。

公开(公告)号：US5920418A

公开(公告)日：1999-07-06

申请号：US492894

申请日：1995-06-20

申请人： Teruhiro Shiono ,  Michihito Ueda ,  Tatsuo Ito ,  Kazuo Yokoyama ,  Shinichi Mizuguchi

发明人： Teruhiro Shiono ,  Michihito Ueda ,  Tatsuo Ito ,  Kazuo Yokoyama ,  Shinichi Mizuguchi

IPC分类号： G03B9/36 ,  G01J5/08 ,  G02B5/18 ,  G02B26/08 ,  G03B9/18 ,  H04N5/74 ,  G02F1/13

CPC分类号： G01J5/02 ,  G01J5/0205 ,  G01J5/0235 ,  G01J5/024 ,  G01J5/04 ,  G01J5/045 ,  G01J5/08 ,  G01J5/0803 ,  G01J5/0806 ,  G01J5/0831 ,  G01J5/084 ,  G01J5/0893 ,  G02B26/0808 ,  G02B5/1828 ,  G03B9/18 ,  H04N5/7416

摘要： The diffractive optical modulator of the invention includes: a plate having a portion functioning as a first electrode; a spacer layer formed on the plate; and a grating consisting of a plurality of beams having a portion functioning as a second electrode, both ends of the beams being supported on the spacer layer. In the diffractive optical modulator, by adjusting a voltage applied between the first electrode and the second electrode, a distance between the beams and the plate is varied, thereby controlling the diffraction efficiency. An insulating layer is further provided between the plate and the plurality of beams.

公开(公告)号：US6072620A

公开(公告)日：2000-06-06

申请号：US860253

申请日：1997-06-25

申请人： Teruhiro Shiono ,  Michihito Ueda ,  Tatsuo Ito ,  Kazuo Yokoyama

发明人： Teruhiro Shiono ,  Michihito Ueda ,  Tatsuo Ito ,  Kazuo Yokoyama

IPC分类号： G01J1/00 ,  G02B3/00 ,  G02B26/08 ,  G02F1/01 ,  G02B26/00 ,  G01J1/02 ,  G01J1/04 ,  G02B26/06

CPC分类号： G02F1/0102 ,  G02B3/0018 ,  G02B3/0056

摘要： Microlenses 3a and 3b are formed on a first surface of a transparent substrate, and an output efficiency control device 2 which modulates a light amount of incident light is provided on a second surface opposing the first surface. Incident light 4 is made to be incident obliquely to an optical axis of the microlens 3a, to be focused on the output efficiency control device 2. The output efficiency control device 2 modulates a light amount of incident light and outputs the light as outgoing light 5 through the microlens 3b. Because of such a structure, the output efficiency control device 2 can be decreased in size, compared with a diameter of a beam and an aperture of a microlens.

摘要翻译： PCT No.PCT / JP96 / 03202 Sec。 371日期：1997年9月2日 102（e）1997年9月2日PCT PCT 1996年10月31日PCT公布。 第WO97 / 16756号公报 日期1997年5月9日在透明基板的第一表面上形成微透镜3a和3b，并且在与第一表面相对的第二表面上设置调制入射光量的输出效率控制装置2。 入射光4被倾斜地入射到微透镜3a的光轴上，聚焦在输出效率控制装置2上。输出效率控制装置2调制入射光的光量并输出光作为输出光5 通过微透镜3b。 由于这样的结构，与光束的直径和微透镜的孔径相比，输出效率控制装置2的尺寸可以减小。

公开(公告)号：US5949570A

公开(公告)日：1999-09-07

申请号：US848922

申请日：1997-05-01

申请人： Teruhiro Shiono ,  Michihito Ueda ,  Tatsuo Ito ,  Kazuo Yokoyama ,  Shinichi Mizuguchi

发明人： Teruhiro Shiono ,  Michihito Ueda ,  Tatsuo Ito ,  Kazuo Yokoyama ,  Shinichi Mizuguchi

IPC分类号： G02B5/18 ,  G02B26/00

CPC分类号： G02B5/1828

摘要： The diffractive optical modulator of the invention includes: a plate having a portion functioning as a first electrode; a spacer layer formed on the plate; and a grating consisting of a plurality of beams having a portion functioning as a second electrode, both ends of the beams being supported on the spacer layer. In the diffractive optical modulator, by adjusting a voltage applied between the first electrode and the second electrode, a distance between the beams and the plate is varied, thereby controlling the diffraction efficiency. An insulating layer is further provided between the plate and the plurality of beams.

摘要翻译： 本发明的衍射光学调制器包括：具有用作第一电极的部分的板; 形成在所述板上的间隔层; 以及由具有用作第二电极的部分的多个光束组成的光栅，所述光束的两端被支撑在所述间隔层上。 在衍射光学调制器中，通过调整施加在第一电极和第二电极之间的电压，光束和板之间的距离是变化的，从而控制衍射效率。 绝缘层还设置在板和多个梁之间。