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1. 发明授权

US07397752B2 Pickup for magneto-optical recording medium 失效
标题翻译：拾音器用于磁光记录介质
公开(公告)号：US07397752B2
公开(公告)日：2008-07-08
申请号：US10846282
申请日：2004-05-14
申请人： Tetsuo Ueyama , Kohji Minami , Tomoyuki Miyake , Yasuo Nakata
发明人： Tetsuo Ueyama , Kohji Minami , Tomoyuki Miyake , Yasuo Nakata
IPC分类号： G11B7/00
CPC分类号： G11B7/1353 , G11B7/1365 , G11B11/10545 , G11B11/10597 , G11B2007/0006
摘要： A pickup for a magneto-optical recording medium is provided, which improves quality of reproduced signals by eliminating a phase difference between the polarizations and is capable of coping with magneto-optical recording media of different recording/reproducing systems. A return light beam of light reflected by a magneto-optical recording medium is polarized and separated into ± first-order diffracted lights through a light-branching diffraction element provided between a light source and an objective lens. The ± first-order diffracted lights are compensated for their phases through first and second phase compensation elements so that there is no phase difference between the polarizations, and are, further, polarized and separated through the first and second polarization/separation elements, and are received by first and second light detectors. Use of the first and second phase compensation elements having different phase compensation amounts makes it possible to cope with the magneto-optical recording media of different recording/reproducing systems.
摘要翻译：提供了一种用于磁光记录介质的拾取器，其通过消除极化之间的相位差来提高再现信号的质量，并且能够应对不同记录/再现系统的磁光记录介质。由磁光记录介质反射的返回光束被偏振并通过设置在光源和物镜之间的光分支衍射元件分离为±一级衍射光。 ±一级衍射光通过第一和第二相位补偿元件对其相位进行补偿，使得在极化之间不存在相位差，并且还通过第一和第二偏振/分离元件偏振和分离，并且由第一和第二光检测器接收。使用具有不同相位补偿量的第一和第二相位补偿元件使得可以应对不同记录/再现系统的磁光记录介质。

2. 发明申请

US20050152636A1 Optical miniaturized module, optical pickup device, and optical disk device provided with light source and photodetector 失效
标题翻译：光学小型化模块，光学拾取装置以及具有光源和光电检测器的光盘装置
公开(公告)号：US20050152636A1
公开(公告)日：2005-07-14
申请号：US11029599
申请日：2005-01-04
申请人： Masaru Ogawa , Tetsuo Ueyama , Kohji Minami , Tomoyuki Miyake , Tomiyuki Numata
发明人： Masaru Ogawa , Tetsuo Ueyama , Kohji Minami , Tomoyuki Miyake , Tomiyuki Numata
IPC分类号： G11B11/105 , G02B6/26 , G11B7/09 , G11B7/12 , G11B7/13 , G11B7/135
CPC分类号： G11B7/131 , G11B7/0901 , G11B7/123 , G11B7/1353 , G11B7/1381
摘要： The optical miniaturized module includes a semiconductor laser for irradiating an optical disk with laser light, a diffraction grating for forming a main beam and two sub beams from the laser light, a polarization hologram for dividing reflected light from the optical disk, and a photodetector for detecting the reflected light. The polarization hologram includes a first parting line defined in a direction optically corresponding to a radial direction as the optical disk rotates. A main beam M incident area is divided with a boundary defined by the first parting line. A sub beam A incident area and a sub beam B incident area are each arranged avoiding the first parting line.
摘要翻译：该光学小型化模块包括用于用激光照射光盘的半导体激光器，用于形成主光束的衍射光栅和来自激光的两个子光束，用于分离来自光盘的反射光的偏振全息图，以及用于检测反射光。偏振全息图包括在光盘旋转时沿与光学对应的方向限定的第一分型线。主波束M入射区域由第一分隔线限定的边界划分。分别设置子光束A入射区域和副光束B入射区域，避开第一分色线。

3. 发明授权

US07369479B2 Optical miniaturized module, optical pickup device, and optical disk device provided with light source and photodetector 失效
标题翻译：光学小型化模块，光学拾取装置以及具有光源和光电检测器的光盘装置
公开(公告)号：US07369479B2
公开(公告)日：2008-05-06
申请号：US11029599
申请日：2005-01-04
申请人： Masaru Ogawa , Tetsuo Ueyama , Kohji Minami , Tomoyuki Miyake , Tomiyuki Numata
发明人： Masaru Ogawa , Tetsuo Ueyama , Kohji Minami , Tomoyuki Miyake , Tomiyuki Numata
IPC分类号： G11B7/00
CPC分类号： G11B7/131 , G11B7/0901 , G11B7/123 , G11B7/1353 , G11B7/1381
摘要： The optical miniaturized module includes a semiconductor laser for irradiating an optical disk with laser light, a diffraction grating for forming a main beam and two sub beams from the laser light, a polarization hologram for dividing reflected light from the optical disk, and a photodetector for detecting the reflected light. The polarization hologram includes a first parting line defined in a direction optically corresponding to a radial direction as the optical disk rotates. A main beam M incident area is divided with a boundary defined by the first parting line. A sub beam A incident area and a sub beam B incident area are each arranged avoiding the first parting line.
摘要翻译：该光学小型化模块包括用于用激光照射光盘的半导体激光器，用于形成主光束的衍射光栅和来自激光的两个子光束，用于分离来自光盘的反射光的偏振全息图，以及用于检测反射光。偏振全息图包括在光盘旋转时沿与光学对应的方向限定的第一分型线。主波束M入射区域由第一分隔线限定的边界划分。分别设置子光束A入射区域和副光束B入射区域，避开第一分色线。

4. 发明授权

US5085496A Optical element and optical pickup device comprising it 失效
标题翻译：光学元件和包含它的光学拾取器件
公开(公告)号：US5085496A
公开(公告)日：1992-02-04
申请号：US500292
申请日：1990-03-28
申请人： Yoshio Yoshida , Takahiro Miyake , Yasuo Nakata , Yukio Kurata , Nobuo Ogata , Tetsuo Ueyama , Hideaki Sato
发明人： Yoshio Yoshida , Takahiro Miyake , Yasuo Nakata , Yukio Kurata , Nobuo Ogata , Tetsuo Ueyama , Hideaki Sato
IPC分类号： G02B5/18 , G11B7/135 , G11B11/105
CPC分类号： G11B7/1365 , G02B1/118 , G02B27/4261 , G02B27/4272 , G02B5/1809 , G02B5/1814 , G02B5/1866 , G11B11/10543 , G11B7/1353
摘要： An optical element comprises a polarization diffraction element that is provided with diffraction gratings that are respectively mounted on different faces of a transparent substrate of a flat plate shape, which grating pitches are equal to each other and approximately equal to the wavelength of an incident light, and which grating lines are parallel. The thickness of the substrate is set such that the difference that occurs between the phases of the P and S polarizations of a light due to the grating, and the difference that occurs between the phases of the two polarizations when the light propagates through the substrate cancel out. The optical pickup device comprising the optical element includes a polarized light detecting unit provided with a diffraction grating which grating pitch is approximately equal to the wavelength of an incident light; a first photodetector that is mounted integrally and virtually in parallel with the substrate, and that receives a zero-order diffracted light produced by the diffraction grating; and a second photodetector that is located in the same plane as the first photodetector and mounted integrally with the first photodetector and the substrate, and that receives a first-order diffracted light produced by the diffraction grating.

5. 发明申请

US20070053270A1 Optical pickup device recording and/or reproducing information on and/or from a plurality of kinds of recording media 有权
标题翻译：光拾取装置在多种记录介质上记录和/或再现信息
公开(公告)号：US20070053270A1
公开(公告)日：2007-03-08
申请号：US11495907
申请日：2006-07-28
申请人： Tetsuo Ueyama , Osamu Miyazaki , Yukio Watanabe , Yasuo Nakata , Tomio Mashiyama
发明人： Tetsuo Ueyama , Osamu Miyazaki , Yukio Watanabe , Yasuo Nakata , Tomio Mashiyama
IPC分类号： G11B7/135
CPC分类号： G11B7/1353 , G11B7/0903
摘要： An optical pickup device has a semiconductor laser emitting light which is in turn branched via a diffraction grating into at least three beams of light including a main beam and two sub beams which are in turn condensed via an objective lens on an optical disk at a guide groove and reflected by the optical disk to provide three reflections of light which are in turn received by detectors, each divided into two regions, respectively, to generate a tracking error signal. The diffraction grating is divided into three regions including a first region, a second region and a third region located intermediate therebetween, each having a periodical structure out of phase, the periodical structure having grating grooves in a direction determined depending on the phase of the second region to incline relative to a direction perpendicular to the guide groove of the optical disk.
摘要翻译：光学拾取装置具有发射光的半导体激光器，该半导体激光器又通过衍射光栅分支成至少三束光束，所述至少三束光包括主光束和两个子光束，所述至少三个光束又通过物镜在光盘上以引导凹槽并由光盘反射以提供三次反射的光，这些反射又被检测器接收，每个被分成两个区域以产生跟踪误差信号。衍射光栅分为三个区域，包括第一区域，第二区域和位于其间的第三区域，每个区域具有异相的周期性结构，该周期结构具有根据第二区域的相位确定的方向的光栅槽区域相对于垂直于光盘的引导槽的方向倾斜。

6. 发明授权

US07990834B2 Optical pickup device recording and/or reproducing information on and/or from a plurality of kinds of recording media 有权
标题翻译：光拾取装置在多种记录介质上记录和/或再现信息
公开(公告)号：US07990834B2
公开(公告)日：2011-08-02
申请号：US11495907
申请日：2006-07-28
申请人： Tetsuo Ueyama , Osamu Miyazaki , Yukio Watanabe , Yasuo Nakata , Tomio Mashiyama
发明人： Tetsuo Ueyama , Osamu Miyazaki , Yukio Watanabe , Yasuo Nakata , Tomio Mashiyama
IPC分类号： G11B7/135
CPC分类号： G11B7/1353 , G11B7/0903
摘要： An optical pickup device has a semiconductor laser emitting light which is in turn branched via a diffraction grating into at least three beams of light including a main beam and two sub beams which are in turn condensed via an objective lens on an optical disk at a guide groove and reflected by the optical disk to provide three reflections of light which are in turn received by detectors, each divided into two regions, respectively, to generate a tracking error signal. The diffraction grating is divided into three regions including a first region, a second region and a third region located intermediate therebetween, each having a periodical structure out of phase, the periodical structure having grating grooves in a direction determined depending on the phase of the second region to incline relative to a direction perpendicular to the guide groove of the optical disk.
摘要翻译：光学拾取装置具有发射光的半导体激光器，该半导体激光器又通过衍射光栅分支成至少三束光束，所述至少三束光包括主光束和两个子光束，所述至少三个光束又通过物镜在光盘上以引导凹槽并由光盘反射以提供三次反射的光，这些反射又被检测器接收，每个被分成两个区域以产生跟踪误差信号。衍射光栅分为三个区域，包括第一区域，第二区域和位于其间的第三区域，每个区域具有异相的周期性结构，该周期结构具有根据第二区域的相位确定的方向的光栅槽区域相对于垂直于光盘的引导槽的方向倾斜。

7. 发明授权

US07684306B2 Optical pickup apparatus 失效
标题翻译：光拾取装置
公开(公告)号：US07684306B2
公开(公告)日：2010-03-23
申请号：US11496814
申请日：2006-07-31
申请人： Kazunori Matsubara , Shinzoh Murakami , Tetsuo Ueyama , Kazuhiro Tsuchida , Yukio Watanabe , Osamu Miyazaki
发明人： Kazunori Matsubara , Shinzoh Murakami , Tetsuo Ueyama , Kazuhiro Tsuchida , Yukio Watanabe , Osamu Miyazaki
IPC分类号： G11B7/00
CPC分类号： G11B7/1353
摘要： There is provided an optical pickup apparatus that can obtain a stable servo signal by reducing stray light generated by diffraction in a recording layer other than a recording layer on which light is condensed. A hologram element provided in an optical pickup apparatus for recording information onto a recording medium and/or reproducing information on the recording medium by use of light includes fourth and fifth divisions where at least first-order diffracted light among diffracted light beams obtained by reflection and diffraction on a recording layer other than a light-condensed recording layer on which light is condensed by an objective lens so as not to be directed toward first and second light-receiving elements for detecting focus position information and third to eighth light-receiving elements for detecting track position information.
摘要翻译：提供了一种光拾取装置，其可以通过减少除了聚光的记录层之外的记录层中的衍射产生的杂散光，从而获得稳定的伺服信号。提供在用于通过使用光将信息记录在记录介质上和/或在记录介质上再现信息的光学拾取装置中的全息元件包括第四和第五分割，其中至少一级衍射光通过反射和除了聚光记录层之外的记录层上的衍射，其中光被物镜聚光，以便不被指向用于检测聚焦位置信息的第一和第二光接收元件和用于检测聚焦位置信息的第三至第八光接收元件检测轨迹位置信息。

8. 发明申请

US20080151337A1 Wavelength control method controlling waveform for recording or reproducing information with holography, hologram information processing apparatus and hologram recording medium 审中-公开
标题翻译：波长控制方法控制用全息图，全息图信息处理装置和全息图记录介质记录或再现信息的波形
公开(公告)号：US20080151337A1
公开(公告)日：2008-06-26
申请号：US12001793
申请日：2007-12-11
申请人： Yasunori Kanazawa , Tetsuo Ueyama
发明人： Yasunori Kanazawa , Tetsuo Ueyama
IPC分类号： G03H1/02
CPC分类号： G03H1/22 , G03H1/2286 , G03H2001/2289 , G03H2222/10 , G11B7/0065 , G11B7/00736 , G11B7/00772 , G11B7/126
摘要： For controlling a wavelength of laser light of a wavelength-variable laser (step S0), an optical system or a hologram recording medium is moved (step S1) to attain a state in which a light beam enters a wavelength control pattern. Reference light that is the laser light is applied to the wavelength control pattern (step S2). Then, a light receiving element observes reproduction light from the wavelength control pattern (step S3). A wavelength of the reference light that is the laser light is minutely changed. A quantity of the reproduction light changes with the wavelength. The quantity of the reproduction light is monitored to obtain a specific wavelength λ0 (a rotation angle of a diffraction grating 52) maximizing the quantity of the reproduction light (step S4). The wavelength of the laser light of the wavelength-variable laser light source is adjusted (step S5).
摘要翻译：为了控制波长可变激光器的激光波长（步骤S0），移动光学系统或全息图记录介质（步骤S1），以获得光束进入波长控制图案的状态。作为激光的基准光被施加到波长控制图案（步骤S2）。然后，受光元件观察来自波长控制图案的再现光（步骤S3）。作为激光的参考光的波长被微小地改变。一定量的再现光随波长而变化。监视再现光的量以获得最大化再现光量的特定波长λ（0）（衍射光栅52的旋转角度））（步骤S 4）。调整波长可变激光光源的激光的波长（步骤S5）。

9. 发明申请

US20070025228A1 Optical pickup apparatus 失效
标题翻译：光拾取装置
公开(公告)号：US20070025228A1
公开(公告)日：2007-02-01
申请号：US11496814
申请日：2006-07-31
申请人： Kazunori Matsubara , Shinzoh Murakami , Tetsuo Ueyama , Kazuhiro Tsuchida , Yukio Watanabe , Osamu Miyazaki
发明人： Kazunori Matsubara , Shinzoh Murakami , Tetsuo Ueyama , Kazuhiro Tsuchida , Yukio Watanabe , Osamu Miyazaki
IPC分类号： G11B7/135
CPC分类号： G11B7/1353
摘要： There is provided an optical pickup apparatus that can obtain a stable servo signal by reducing stray light generated by diffraction in a recording layer other than a recording layer on which light is condensed. A hologram element provided in an optical pickup apparatus for recording information onto a recording medium and/or reproducing information on the recording medium by use of light includes fourth and fifth divisions where at least first-order diffracted light among diffracted light beams obtained by reflection and diffraction on a recording layer other than a light-condensed recording layer on which light is condensed by an objective lens so as not to be directed toward first and second light-receiving elements for detecting focus position information and third to eighth light-receiving elements for detecting track position information.
摘要翻译：提供了一种光拾取装置，其可以通过减少除了聚光的记录层之外的记录层中的衍射产生的杂散光，从而获得稳定的伺服信号。提供在用于通过使用光将信息记录在记录介质上和/或在记录介质上再现信息的光学拾取装置中的全息元件包括第四和第五分割，其中至少一级衍射光通过反射和除了聚光记录层之外的记录层上的衍射，其中光被物镜聚光，以便不被指向用于检测聚焦位置信息的第一和第二光接收元件和用于检测聚焦位置信息的第三至第八光接收元件检测轨迹位置信息。

10. 发明申请

US20050180293A1 Optical pickup 有权
标题翻译：光学拾音
公开(公告)号：US20050180293A1
公开(公告)日：2005-08-18
申请号：US10512188
申请日：2003-04-18
申请人： Tetsuo Ueyama , Keiji Sakai , Renzaburou Miki , Osamu Miyazaki , Yukio Watanabe
发明人： Tetsuo Ueyama , Keiji Sakai , Renzaburou Miki , Osamu Miyazaki , Yukio Watanabe
IPC分类号： G11B7/1353 , G11B7/09 , G11B7/095 , G11B7/00
CPC分类号： G11B7/1353 , G11B7/0903 , G11B7/0956
摘要： An optical pickup converts a laser beam from a semiconductor laser (1) into a parallel ray with a collimator lens (2), and divides it into a main beam (30), a sub-beam (+1st order component) (31), and a sub-beam (−1st order component) (32) with a gradient multiple-division type phase difference grating (3). After passing through a beam splitter (4), an objective lens (5) condenses the light beams on a track (61) of an optical disc (6), and the reflected light that has passed through the objective lens 5 is reflected at the beam splitter (4) and is guided into optical detectors (8A, 8B, and 8C) by a condensing lens (7). Accordingly, in a tracking error signal detecting method using the push-pull signals of the main beam and sub-beams, an offset produced by an objective lens shift or a disc tilt can be cancelled at low cost without lowering the efficiency of using light.
摘要翻译：光学拾取器将来自半导体激光器（1）的激光束用准直透镜（2）转换成平行光线，并将其分割成主光束（30），子光束（+ 1次分量）（31），和具有梯度多分割型相位差光栅（3）的子光束（-1阶分量）（32）。在通过分束器（4）之后，物镜（5）将光束会聚在光盘（6）的轨道（61）上，并且已经通过物镜5的反射光在分束器（4），并通过聚光透镜（7）被引导到光学检测器（8A，8B和8C）中。因此，在使用主光束和子光束的推挽信号的跟踪误差信号检测方法中，可以以低成本消除由物镜偏移或盘倾斜产生的偏移而不降低使用光的效率。

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