公开(公告)号：US06577573B2

公开(公告)日：2003-06-10

申请号：US10145041

申请日：2002-05-15

申请人： Shigeru Nakamura ,  Takeshi Maeda ,  Koichiro Wakabayashi

发明人： Shigeru Nakamura ,  Takeshi Maeda ,  Koichiro Wakabayashi

IPC分类号： G11B576

CPC分类号： G11B20/10009 ,  G11B7/005

摘要： An optical information reproducing method for reproducing information recorded at at least one mark on an optical information medium. The method includes irradiating a laser to the optical information medium, detecting a reflected beam reflected from the optical information medium, and reproducing information recorded on the optical information medium from an output signal of a detector which detects the reflected beam. The step of reproducing information is changed in dependence upon a length of the mark of the optical information medium.

摘要翻译： 一种用于再现记录在光信息介质上的至少一个标记上的信息的光信息再现方法。 该方法包括：向光学信息介质照射激光，检测从光学信息介质反射的反射光束，以及从检测反射光束的检测器的输出信号再现记录在光学信息介质上的信息。 再现信息的步骤根据光信息介质的标记的长度而改变。

公开(公告)号：US06430131B1

公开(公告)日：2002-08-06

申请号：US09763866

申请日：2001-06-25

申请人： Shigeru Nakamura ,  Takeshi Maeda ,  Koichiro Wakabayashi

发明人： Shigeru Nakamura ,  Takeshi Maeda ,  Koichiro Wakabayashi

IPC分类号： G11B576

CPC分类号： G11B7/005

摘要： Information recorded on an optical disk in accordance with a mark edge recording scheme is detected by a center detection circuit which includes a bisected beam detector to obtain a mark center position signal. In succession, the mark center position signal is converted to a mark edge position signal by an edge signal generating circuit. An information reproducing device is implemented which is capable of performing reproducing operation on an information medium conforming to a high-density mark edge recording scheme and which is stable against changes of recording paper, recording sensitivity and reflectivity.

摘要翻译： 根据标记边缘记录方案记录在光盘上的信息由包括二等分光束检测器的中心检测电路检测，以获得标记中心位置信号。 接着，由边缘信号发生电路将标记中心位置信号转换为标记边缘位置信号。 实现了能够对符合高密度标记边缘记录方案的信息介质执行再现操作并且对记录纸的变化，记录灵敏度和反射率稳定的信息再现装置。

公开(公告)号：US06298028B1

公开(公告)日：2001-10-02

申请号：US09520722

申请日：2000-03-08

申请人： Kouji Arikawa ,  Shigeru Nakamura ,  Kazuo Shigematsu

发明人： Kouji Arikawa ,  Shigeru Nakamura ,  Kazuo Shigematsu

IPC分类号： G11B712

CPC分类号： G11B7/127 ,  G11B7/0916 ,  G11B7/123 ,  G11B7/131 ,  G11B7/1356 ,  G11B7/1362 ,  G11B19/12

摘要： In an optical head for recording on or reproducing from a plurality of kinds of optical information recording media corresponding to a plurality of kinds of different wavelengths, coma aberration is prevented, and low price and high reliability are realized. To that end, in an optical head constituted by laser light sources of three wavelengths and photodetectors corresponding to the laser light sources of the three wavelengths, a two-laser module including laser light sources of two adjacent wavelengths and photodetectors corresponding to the laser light sources, a laser module including a laser light source of the rest one wavelength and a photodetector corresponding to the laser light source, and a dichroic mirror bonded with a rising mirror are combined.

摘要翻译： 在用于在与多种不同波长对应的多种光学信息记录媒体中进行记录或再现的光学头中，防止了彗形像差，实现了低价格和高可靠性。 为此，在由三个波长的激光光源构成的光头和对应于三个波长的激光光源的光电检测器中，包括两个相邻波长的激光光源和对应于激光光源的光电检测器的双激光模块 包括其余一个波长的激光光源和对应于激光光源的光电检测器的激光模块和与上升反射镜结合的二向色镜组合。

公开(公告)号：US06295402B1

公开(公告)日：2001-09-25

申请号：US09440164

申请日：1999-11-15

申请人： Shigeru Nakamura ,  Kazuhito Tajima

发明人： Shigeru Nakamura ,  Kazuhito Tajima

IPC分类号： G02B600

CPC分类号： G02F1/3515

摘要： An optical switch is provided that utilizes a signal light frequency shift due to the resonance excitation non-linear optical effect in a semiconductor material so that a high extinction ratio optical switching operation can be realized with low energy controlling light pulses. The non-linear optical waveguide 1 receives a signal light pulse of a frequency of &ohgr;1 and a controlling light pulse of a frequency of &ohgr;0 and sets the pulse width of the controlling light pulse to a value smaller than that of the signal light pulse. The optical waveguide portion of the non-linear optical waveguide 1 is formed of a non-linear optical medium of which the non-linear refractive index changes due to absorption or amplification of the controlling light. The frequency &ohgr;1 of the signal light is set to the transparent region of the non-linear optical waveguide 1. When the frequency &ohgr;0 of the controlling light is set to the absorption region of the non-linear optical waveguide 1, some of signal light pulses incident together with the controlling lights partially frequency-shift toward the high-frequency area. The optical frequency filter 2 outputs only the frequency-shifted components. This allows the optical switching operation to be realized by controlling light pulses with low energies.

摘要翻译： 提供了一种光学开关，其利用由于半导体材料中的共振激励非线性光学效应引起的信号光频移，使得可以以低能量控制光脉冲实现高消光比光开关操作。 非线性光波导1接收ω1的频率的信号光脉冲和ω0的频率的控制光脉冲，并将控制光脉冲的脉冲宽度设定为小于信号光脉冲的脉冲宽度。 非线性光波导1的光波导部分由非线性光学介质形成，其非线性折射率由于控制光的吸收或放大而改变。 将信号光的频率ω1设定为非线性光波导1的透明区域。当将控制光的频率ω0设定为非线性光波导1的吸收区域时，一些信号光脉冲 事件与控制灯一起部分地频移到高频区域。 光频滤波器2仅输出频移分量。 这允许通过以低能量控制光脉冲来实现光开关操作。

公开(公告)号：US06291763B1

公开(公告)日：2001-09-18

申请号：US09543339

申请日：2000-04-05

申请人： Shigeru Nakamura

发明人： Shigeru Nakamura

IPC分类号： H01L3104

CPC分类号： H01G9/2077 ,  C09B23/0066 ,  C09B47/00 ,  C09B57/007 ,  C09B57/10 ,  H01G9/2009 ,  H01G9/2022 ,  H01G9/2031 ,  H01G9/2059 ,  H01L51/445 ,  Y02E10/542

摘要： A photoelectric conversion device comprising an electrically conductive substrate, a photosensitive semiconductor layer, a charge transporting layer, and a counter electrode (preferably a counter electrode having a porous electron-conducting layer), wherein an electrically insulating spacing layer is provided between the semiconductor layer and the counter electrode, and a photo cell having the device. High conversion efficiency is obtained without causing an internal shortage.

摘要翻译： 一种光电转换装置，包括导电基板，光敏半导体层，电荷输送层和对电极（优选为具有多孔电子传导层的对电极），其中，电绝缘间隔层设置在半导体层 和对电极，以及具有该装置的光电池。 获得高转换效率而不会导致内部短缺。

公开(公告)号：US06272097B1

公开(公告)日：2001-08-07

申请号：US09313211

申请日：1999-05-18

申请人： Takeshi Nakao ,  Shigeru Nakamura ,  Toshiaki Tanaka ,  Takeshi Shimano

发明人： Takeshi Nakao ,  Shigeru Nakamura ,  Toshiaki Tanaka ,  Takeshi Shimano

IPC分类号： G11B725

CPC分类号： G11B7/1365 ,  G11B7/122 ,  G11B7/124 ,  G11B7/1372 ,  G11B7/22 ,  G11B11/1058

摘要： A minute optical head is provided so that a light source and one or more photo detector elements are integrated on the same substrate by a simple manufacturing process and may be applied to an apparatus for recording and reproducing recordable optical information. An apparatus for recording and reproducing optical information is arranged to have a minute optical head. A light waveguide layer composed of column semiconductor crystal is formed on a monocrystalline transparent substrate and an active layer is formed on the side of the light waveguide layer. The light beam source is a semiconductor having a vertical resonator formed of a high-reflection film before and after an emitting surface of the active layer so that a light beam is vertically radiated to the substrate. The photo detector element is integrated on the closer portion of the substrate to the light beam source of the semiconductor laser. Further, on the opposed surface of the substrate to the light beam source are sequentially integrated a first transparent layer, a diffraction grating, a second transparent layer, a phase difference generating element, a third transparent layer, a light beam focusing element, a fourth transparent layer, and a slide-resisting protective layer. The slide-resisting protective layer is located closer to and as opposed to the information recording medium.

摘要翻译： 提供一个微小的光学头，使得光源和一个或多个光电检测器元件通过简单的制造工艺集成在同一基板上，并且可以应用于用于记录和再现可记录光学信息的装置。 用于记录和再现光学信息的设备被布置成具有微小的光学头。 在单晶透明基板上形成由柱半导体晶体构成的光波导层，在光波导层一侧形成有源层。 光束源是在有源层的发射表面之前和之后具有由高反射膜形成的垂直谐振器的半导体，使得光束垂直辐射到衬底。 光检测器元件集成在基板的更靠近部分上的半导体激光器的光束源上。 此外，在与光束源的基板相对的表面上依次地集成有第一透明层，衍射光栅，第二透明层，相位差产生元件，第三透明层，光束聚焦元件，第四透明层 透明层和耐滑动保护层。 防滑保护层位于信息记录介质的更靠近和相对的位置。

公开(公告)号：US5627926A

公开(公告)日：1997-05-06

申请号：US533547

申请日：1995-09-25

申请人： Shigeru Nakamura ,  Akira Arimoto ,  Kenkichi Suzuki ,  Katsuhiko Shibata

发明人： Shigeru Nakamura ,  Akira Arimoto ,  Kenkichi Suzuki ,  Katsuhiko Shibata

IPC分类号： G02B5/04 ,  F21V5/02 ,  F21V8/00 ,  G02B6/00 ,  G02F1/1335 ,  G02F1/13357 ,  G02B6/34 ,  F21V9/04

CPC分类号： G02B6/0053 ,  F21V5/02 ,  G02B6/0036 ,  G02B6/0043 ,  Y10S385/901

摘要： An information indicator suitable for information processors such as personal computers, word processors and the like includes a light source, a scattering plate which scatters light from the light source, an indicator plate irradiated with scattered light from the scattering plate, and a prism plate operatively arranged with respect to the scattering plate and the indicator plate and having a prism-like protuberance structure formed at a side thereof. The prism plate is so disposed that the prism-like protuberance structure faces the scattering plate, and the angle 2.theta. constituting the prism-like protuberance structure is defined by the formula, 2.theta..ltoreq.2/3.times.(.pi./2+2.times.arcsin (n'/n)), in this inequality, n is the refractive index of said prism plate medium, and n' is the refractive index of a material in which the prism plate is arranged.

摘要翻译： 适合于诸如个人计算机，文字处理器等的信息处理器的信息指示器包括光源，散射来自光源的光的散射板，从散射板照射的散射光的指示板和可操作地使用的棱镜板 相对于散射板和指示板布置并且具有形成在其一侧的棱柱状突起结构。 棱镜板被设置成使得棱柱状突起结构面向散射板，并且构成棱柱状突起结构的角度2θ由公式2θ= E + 2，E 2 + 3 + EE 在该不等式中，x（pi / 2 + 2xarcsin（n'/ n）），n是所述棱镜板介质的折射率，n'是棱镜板的材料的折射率。

公开(公告)号：US5576151A

公开(公告)日：1996-11-19

申请号：US426671

申请日：1995-04-21

申请人： Masakazu Morigaki ,  Hiroshi Kawamoto ,  Shigeru Nakamura

发明人： Masakazu Morigaki ,  Hiroshi Kawamoto ,  Shigeru Nakamura

IPC分类号： G03C11/00 ,  G03C7/30 ,  G03C7/42 ,  G03C7/407

CPC分类号： G03C7/3046 ,  G03C7/421

摘要： A processing solution for a silver halide color photographic material, said solution containing at least one kind of compound represented by formula (I) or (III): ##STR1##

摘要翻译： 一种用于卤化银彩色照相材料的处理溶液，所述溶液含有至少一种式（I）或（III）表示的化合物：（I）（III）

公开(公告)号：US5557700A

公开(公告)日：1996-09-17

申请号：US441416

申请日：1995-05-15

申请人： Shigeru Nakamura ,  Kazuhito Tajima

发明人： Shigeru Nakamura ,  Kazuhito Tajima

IPC分类号： G02B6/12 ,  G02F1/025 ,  G02F1/35 ,  G02F1/365 ,  G02B6/10

CPC分类号： G02F1/025 ,  G02F1/365 ,  G02F1/3515 ,  G02F2202/10 ,  G02F2203/25

摘要： A semiconductor optical device having an optical waveguide which represents nonlinear refractive index change due to control light absorption. The waveguide has a bandgap wavelength that increases from its entrance to its exit. In the case of the waveguide divided into first to n-th regions, the bandgap wavelengths .lambda..sub.1, .lambda..sub.2, . . . , .lambda..sub.n-1, .lambda..sub.n of the regions satisfy the relationship .lambda..sub.1

摘要翻译： 具有表示由于控制光吸收而引起的非线性折射率变化的光波导的半导体光学元件。 波导具有从其入口到其出口增加的带隙波长。 在波导分为第一至第n区域的情况下，带隙波长λ1，λ2，...。 。 。 ，这些区域的λn-1，λn满足λ1 <λ2 <λ的关系。 。 。 <λn-1 <λn。 在波导未分成区域的情况下，波导的带隙波长λ从入口到出口单调增加。 该装置可以通过具有比常规能量更低的能量的控制光来操作。

公开(公告)号：US5408452A

公开(公告)日：1995-04-18

申请号：US938254

申请日：1992-10-13

申请人： Akito Sakemoto ,  Toshinori Sugiyama ,  Zenji Tsutsumi ,  Shigeru Nakamura ,  Masahiro Ojima

发明人： Akito Sakemoto ,  Toshinori Sugiyama ,  Zenji Tsutsumi ,  Shigeru Nakamura ,  Masahiro Ojima

IPC分类号： G11B11/10 ,  G11B7/09 ,  G11B7/095 ,  G11B11/105 ,  G11B7/00

CPC分类号： G11B7/094 ,  G11B11/10578 ,  G11B7/0903

摘要： An optical information recording/reproducing system is disclosed in which optical information having guide grooves for tracking and information pits beforehand provided thereon is irradiated with a main light beam for the recording/reproduction of information and a pair of subsidiary light beams for the detection of tracking and the scanning loci of the centers of the subsidiary light beams are arranged on the optical information carrier on opposite sides of the scanning locus of the center of the main light beam, respectively, first and second means for generating electric signals having their amplitudes corresponding to the respective intensities of the subsidiary light beams reflected by the optical information carrier, third means for detecting a difference in amplitude between the electric output signals of the first and second means, fourth means for detecting Ac components of the electric output signals of the first and second means to detect a difference in amplitude between the AC components, and fifth means for selecting a detection output of the third means as tracking information when the subsidiary light beams scan a region on the optical information carrier where the information pits are not provided and selecting a detection output of the fourth means as tracking information when the subsidiary light beams scan a region on the optical information carrier where the information pits are provided.

摘要翻译： PCT No.PCT / JP91 / 01737 Sec。 371日期：1992年10月13日 102（e）日期1992年10月13日PCT 1991年12月19日PCT PCT。 第WO93 / 12522号公报 日期：1993年6月24日。公开了一种光信息记录/再现系统，其中具有用于跟踪的信息凹槽和预先设置的信息凹坑的光学信息被照射用于记录/再现信息的主光束和一对辅助 用于检测跟踪的光束和辅助光束的中心的扫描轨迹分别布置在主光束中心的扫描轨迹的相对侧上的光学信息载体上，第一和第二装置 电信号的幅度对应于由光信息载体反射的辅助光束的各自的强度，第三装置，用于检测第一和第二装置的电输出信号之间的幅度差;第四装置，用于检测第一和第二装置的Ac分量 第一和第二装置的电输出信号以检测a中的差异 AC分量之间的距离，以及当辅助光束扫描没有提供信息坑的光信息载体上的区域时选择第三装置的检测输出作为跟踪信息的第五装置，并且选择第四装置的检测输出 作为辅助光束扫描光信息载体上提供信息坑的区域的跟踪信息。