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1. 发明授权

US5367512A Multi-beam optical recording-reproduction device with independent error detection for each beam 失效
标题翻译：多光束光记录再现装置，每个光束具有独立的检错功能
公开(公告)号：US5367512A
公开(公告)日：1994-11-22
申请号：US73629
申请日：1993-06-08
申请人： Yasuyuki Satou , Morihiro Karaki , Masahisa Shinoda
发明人： Yasuyuki Satou , Morihiro Karaki , Masahisa Shinoda
IPC分类号： G11B7/09 , G11B7/135 , G11B7/095
CPC分类号： G11B7/1381 , G11B7/0901 , G11B7/0908 , G11B7/0916 , G11B7/1359 , G11B7/094
摘要： A multi-beam optical recording-reproducing device is capable of detecting the focusing and tracking errors of respective beams independently of each other by means of a simple optical system. The optical system for independent tracking error detection may include a wedge prism 39 and a four-partitioned photosensor 42, and that for the independent focusing error detection may include a half prism 33 for dividing the beams into reflected and transmitted portions, first and second knife-edges 34 and 19 for the reflected and transmitted beams, respectively, and a first and second two-partitioned photosensors 35 and 20 for receiving the beams via the first and the second knife-edge, respectively (FIG. 7). Alternatively, the optical system for independent focusing error detection may include a single knife-edge plate 61 having two knife-edges, and a four-partitioned photosensor 64 (FIG. 10), or a wedge prism 71 and an eight-partitioned photosensor 74 (FIG. 12). Further, the optical system for independent tracking error detection may include a concave cylindrical lens 83 (FIG. 14) forming a far field pattern perpendicular to the tracks on the information storage optical medium 9.
摘要翻译：多光束光记录再现装置能够通过简单的光学系统彼此独立地检测各个光束的聚焦和跟踪误差。用于独立跟踪误差检测的光学系统可以包括楔形棱镜39和四分隔光传感器42，并且对于独立聚焦误差检测可以包括用于将光束分成反射和透射部分的半棱镜33，第一和第二刀分别用于反射和透射光束的楔形34和19以及用于分别经由第一和第二刀刃接收光束的第一和第二二分区光电传感器35和20（图7）。或者，用于独立聚焦误差检测的光学系统可以包括具有两个刀刃的单个刀刃板61和四分区光传感器64（图10），或楔形棱镜71和八分隔光电传感器74 （图12）。此外，用于独立跟踪误差检测的光学系统可以包括形成垂直于信息存储光学介质9上的轨道的远场图案的凹形柱面透镜83（图14）。

2. 发明授权

US5511048A Magneto-optical recording and reproducing apparatus 失效
标题翻译：磁光记录和再现装置
公开(公告)号：US5511048A
公开(公告)日：1996-04-23
申请号：US361478
申请日：1994-12-22
申请人： Mitsuru Irie , Takeshi Utakouji , Morihiro Karaki , Nobuo Takeshita , Manabu Koike , Yasuyuki Satou , Naoyuki Egusa , Masahisa Shinoda , Akira Ishimori , Akihiro Shima , Shigenori Yagi
发明人： Mitsuru Irie , Takeshi Utakouji , Morihiro Karaki , Nobuo Takeshita , Manabu Koike , Yasuyuki Satou , Naoyuki Egusa , Masahisa Shinoda , Akira Ishimori , Akihiro Shima , Shigenori Yagi
IPC分类号： G11B11/10 , G11B7/125 , G11B11/105 , G11B11/00
CPC分类号： G11B7/125 , G11B11/10504 , G11B11/10532 , G11B11/10595
摘要： The second harmonic wave of a solid laser light which is emitted from a second harmonic wave light source is divided into a plurality of laser beams by a diffraction grating. The divided laser beams are converged on a record carrier into a plurality of light spots by an optical head. Magnetic field generating coils for applying magnetic fields to the respective light spots in accordance with the recording signals from a signal line are disposed under the record carrier. Part of the solid laser light is reflected and input to a beam splitter. Since part of the light input to the beam splitter is taken out, a stabilizer controls the output of the solid laser light from the second harmonic wave light source, parallel recording/reproduction using the plurality of light spots which are arranged on the record carrier is enabled and the formation of the plurality of light spots is effectively controlled. Thus, a magneto-optical recording and reproducing apparatus which is capable of high-density recording and high-speed data transfer, which supplies a stable and accurate optical output, and which facilitates the control of the optical output is provided.
摘要翻译：从二次谐波光源发射的固体激光的二次谐波通过衍射光栅被分成多个激光束。分割的激光束通过光学头被会聚在记录载体上成多个光点。根据来自信号线的记录信号将磁场施加到各个光点的磁场产生线圈设置在记录载体下方。固体激光的一部分被反射并输入到分束器。由于输入到分束器的光的一部分被取出，所以稳定器控制来自二次谐波光源的固体激光的输出，使用布置在记录载体上的多个光点进行并行记录/再现并且有效地控制多个光点的形成。因此，提供了能够进行高密度记录和高速数据传送的磁光记录和再现装置，其提供稳定且准确的光输出，并且有助于光输出的控制。

3. 发明授权

US5130965A Optical recording/reproducing apparatus using a light spot switching means for centering beams on an information track 失效
标题翻译：使用光点切换装置的光学记录/再现装置，用于在信息轨道上对准光束
公开(公告)号：US5130965A
公开(公告)日：1992-07-14
申请号：US544995
申请日：1990-06-27
申请人： Morihiro Karaki , Yasuyuki Satou , Masahisa Shinoda
发明人： Morihiro Karaki , Yasuyuki Satou , Masahisa Shinoda
IPC分类号： G11B7/00 , G11B7/0045 , G11B7/09
CPC分类号： G11B7/0903
摘要： An optical recording/reproducing apparatus capable of detecting recording defects on an information recording medium comprises a beam irradiation device for irradiating a first beam, by which information pits are recorded on/reproduced from the information track on the information recording medium, a second beam preceding the first beam and a third beam following the first beam, along the information track; an optical detector having a plurality of light receiving surfaces for individually detecting the reflected light of the first beam, the second beam and the third beam, which have been reflected from the information recording medium; a monitoring device for, in a recording mode, monitoring the condition of the information track prior to and after recording in response to amount-of-light signals which respectively correspond to the reflected light of the second beam and the third beam; and a signal generator for, in a reproducing mode, producing a tracking error signal in response to the amount-of-light signals. The optical recording/reproducing apparatus is characterized in that the beam irradiation device includes a light spot switching device for changing the light spot locations of the second beam and the third beam on the information recording medium, depending upon the recording mode or the reproducing mode.
摘要翻译：能够在信息记录介质上检测记录缺陷的光记录/再现装置包括：用于照射第一光束的光束照射装置，信息记录介质上的信息轨迹记录在信息记录媒体上/从再现的信息坑;第二光束所述第一光束和所述第一光束之后的第三光束沿着所述信息轨道; 光检测器，具有多个光接收表面，用于分别检测已从信息记录介质反射的第一光束，第二光束和第三光束的反射光; 用于响应于分别对应于第二光束和第三光束的反射光的光量信号而在记录模式之前和之后监视信息轨迹的状态的监视装置; 以及信号发生器，用于在再现模式下，响应于光量信号产生跟踪误差信号。光记录/重放装置的特征在于，束照射装置包括一个光点切换装置，用于根据记录模式或再现模式改变信息记录介质上的第二光束和第三光束的光点位置。

4. 发明授权

US4942584A Semiconductor laser apparatus driving system 失效
标题翻译：半导体激光设备驱动系统
公开(公告)号：US4942584A
公开(公告)日：1990-07-17
申请号：US368034
申请日：1989-06-16
申请人： Morihiro Karaki , Masahisa Shinoda , Yasuyuki Satou
发明人： Morihiro Karaki , Masahisa Shinoda , Yasuyuki Satou
IPC分类号： H01S5/00 , H01S5/022 , H01S5/0683 , H01S5/40
CPC分类号： H01S5/0014 , H01S5/02212 , H01S5/02248 , H01S5/0683 , H01S5/4031
摘要： In a semiconductor laser apparatus driving system, forward or/and backward beams from a plurality of semiconductor laser beam sources are detected, and arithmetic operations are provided for the detection outputs to determine the light outputs of the respective ones of the semiconductor laser beam sources. The use of a condenser lens which has been used in conventional system is eliminated and, as a result, precise positioning of such lens is avoided, and the semiconductor laser apparatus driving system can be mass-produced.
摘要翻译：在半导体激光装置驱动系统中，检测来自多个半导体激光束源的正向或反向光束，并且为检测输出提供算术运算以确定各个半导体激光束源的光输出。消除了在常规系统中使用的聚光透镜，结果避免了这种透镜的精确定位，并且可以批量生产半导体激光装置驱动系统。

5. 发明授权

US08018799B2 Optical pickup device and optical disc device 有权
标题翻译：光拾取装置和光盘装置
公开(公告)号：US08018799B2
公开(公告)日：2011-09-13
申请号：US12084260
申请日：2006-09-19
申请人： Daisuke Matsubara , Masahisa Shinoda
发明人： Daisuke Matsubara , Masahisa Shinoda
IPC分类号： G11B7/00
CPC分类号： G11B7/1356 , G11B7/1275 , G11B7/1353 , G11B2007/0006
摘要： An optical pickup device is provided. The optical pickup device includes a first, second, and third light emitting portions emitting light beams having first, second, and third wavelengths, respectively; an adjusting element for optical axes enabled to control the optical axis of the return light beam reflected by the optical recording media after output from the light emitting portion, and a single photo detector receiving the return light beams passing through the adjusting element for optical axes. The first light emitting portion and the second light emitting portion are arranged in such a way that the optical axis of the first light beam and the optical axis of the third light beam approximately coincide with each other. The adjusting element for optical axes controls the axis of the return light beam of said second light beam and the single photo detector receives the return light beams of the first light beam, the second light beam and the third light beam.
摘要翻译：提供一种光拾取装置。光拾取装置包括分别发射具有第一，第二和第三波长的光束的第一，第二和第三发光部分; 用于光轴的调节元件，能够控制从发光部分输出之后由光学记录介质反射的返回光束的光轴，以及接收通过光轴调整元件的返回光束的单个光电检测器。第一发光部分和第二发光部分被布置成使得第一光束的光轴和第三光束的光轴彼此大致一致。用于光轴的调节元件控制所述第二光束的返回光束的轴线，并且单个光电检测器接收第一光束，第二光束和第三光束的返回光束。

6. 发明申请

US20120106310A1 OPTICAL HEAD DEVICE AND OPTICAL DISC DEVICE 有权
标题翻译：光头设备和光盘设备
公开(公告)号：US20120106310A1
公开(公告)日：2012-05-03
申请号：US13380791
申请日：2011-01-17
申请人： Masahisa Shinoda , Hironori Nakahara , Masayuki Omaki , Kenya Nakai , Nobuo Takeshita
发明人： Masahisa Shinoda , Hironori Nakahara , Masayuki Omaki , Kenya Nakai , Nobuo Takeshita
IPC分类号： G11B7/1353 , G11B7/1374
CPC分类号： G11B7/0903 , G11B7/094 , G11B7/131 , G11B7/1353 , G11B7/13925 , G11B7/1395 , G11B2007/0013
摘要： An optical head device mounted in an optical disc device. The optical head device is provided with a diffractive optical element and a photodetector. The diffractive optical element has: a primary diffraction region at a location on which the positive and negative first-order components and some of the zero-order component of a reflectively diffracted light beam are incident; and secondary diffraction regions at locations on which the rest of the zero-order component but none of the positive or negative first-order components of the reflectively diffracted light beam are incident. A main light-receiving section of the photodetector receives the zero-order component of a transmissively diffracted light beam that has passed through the primary diffraction region and the secondary diffraction regions. Secondary light-receiving sections receive the positive first-order component and/or the negative first-order component of the transmissively diffracted light beam that has passed through the secondary diffraction regions.
摘要翻译：安装在光盘装置中的光学头装置。光头装置设置有衍射光学元件和光电检测器。衍射光学元件具有：反射衍射光束的正，负一阶分量和零级分量的一部分入射的位置处的主衍射区域; 以及零反射衍射光束的零级分量的其余部分而不是反射衍射光束的正或负一阶分量的位置处的次级衍射区域。光检测器的主光接收部接收通过一次衍射区域和二次衍射区域的透射衍射光束的零级分量。次级光接收部分接收通过次级衍射区域的透射衍射光束的正一级分量和/或负一级分量。

7. 发明授权

US07848206B2 Diffractive optical element and optical head 有权
$Diffractive optical element and optical head$
标题翻译：衍射光学元件和光学头
公开(公告)号：US07848206B2
公开(公告)日：2010-12-07
申请号：US12084112
申请日：2006-10-17
申请人： Masahisa Shinoda , Daisuke Matsubara
发明人： Masahisa Shinoda , Daisuke Matsubara
IPC分类号： G11B7/00 , G11B7/135
CPC分类号： G11B7/1275 , G11B7/0903 , G11B7/1353 , G11B2007/0006
摘要： A diffractive optical element whose two diffraction gratings diffract three different wavelength light beams is provided. The diffractive optical element includes a first diffraction grating and a second diffraction grating that is located opposite the first one, and is configured in such a way that, among three different wavelength incident light beams, the diffraction efficiency in one light beam diffracted on the first diffraction grating is a predetermined value or less, and the diffraction efficiencies in the other two different incident light beams diffracted on the second diffraction grating are predetermined values or less. This arrangement can achieve a diffractive optical element capable of diffracting the three different wavelength light beams in a simple configuration.
摘要翻译：提供了两个衍射光栅衍射三种不同波长的光束的衍射光学元件。衍射光学元件包括与第一衍射光栅相对的第一衍射光栅和第二衍射光栅，并且被配置成使得在三个不同波长的入射光束中，在一个光束中衍射的衍射效率在第一衍射光栅是预定值或更小，并且在第二衍射光栅上衍射的另外两个不同的入射光束中的衍射效率是预定值或更小。这种布置可以实现能够以简单配置衍射三种不同波长光束的衍射光学元件。

8. 发明申请

US20090303850A1 OPTICAL DISC MEDIUM AND OPTICAL DISC DEVICE 有权
标题翻译：光盘和光盘设备
公开(公告)号：US20090303850A1
公开(公告)日：2009-12-10
申请号：US12375138
申请日：2007-05-22
申请人： Kenya Nakai , Masahisa Shinoda , Nobuo Takeshita
发明人： Kenya Nakai , Masahisa Shinoda , Nobuo Takeshita
IPC分类号： G11B20/18 , G11B7/24
CPC分类号： G11B7/24 , G11B7/0901 , G11B7/0941 , G11B7/24085 , G11B2007/24308 , G11B2007/2431 , G11B2007/24314 , G11B2007/24316
摘要： When using an optical disc medium that includes pit trains having their widths narrower than a diffraction limit, it is difficult to detect a tracking error signal and take a tracking-servo control while increasing pit density in a direction orthogonal to a pit-train extension direction.Information pit trains are arranged spirally or concentrically and formed in a structure in which their depths are changed periodically at a pitch radially along the optical disc medium, so that the tracking error signal can be obtained by push-pull detection of diffraction light from the structure.
摘要翻译：当使用包括其宽度窄于衍射极限的凹坑列的光盘介质时，难以检测跟踪误差信号并进行跟踪伺服控制，同时在垂直于凹坑列延伸方向的方向上增加凹坑密度。信息坑列被螺旋地或同心地布置并且形成在其深度沿着光盘介质沿径向周期性地改变的结构中，从而可以通过来自结构的衍射光的推挽检测来获得跟踪误差信号。

9. 发明申请

US20090097121A1 Diffractive Optical Element and Optical Head 有权
$Diffractive Optical Element and Optical Head$
标题翻译：衍射光学元件和光学头
公开(公告)号：US20090097121A1
公开(公告)日：2009-04-16
申请号：US12084112
申请日：2006-10-17
申请人： Masahisa Shinoda , Daisuke Matsubara
发明人： Masahisa Shinoda , Daisuke Matsubara
IPC分类号： G02B27/44
CPC分类号： G11B7/1275 , G11B7/0903 , G11B7/1353 , G11B2007/0006
摘要： A diffractive optical element whose two diffraction gratings diffract three different wavelength light beams is provided. The diffractive optical element includes a first diffraction grating and a second diffraction grating that is located opposite the first one, and is configured in such a way that, among three different wavelength incident light beams, the diffraction efficiency in one light beam diffracted on the first diffraction grating is a predetermined value or less, and the diffraction efficiencies in the other two different incident light beams diffracted on the second diffraction grating are predetermined values or less. This arrangement can achieve a diffractive optical element capable of diffracting the three different wavelength light beams in a simple configuration.
摘要翻译：提供了两个衍射光栅衍射三种不同波长的光束的衍射光学元件。衍射光学元件包括与第一衍射光栅相对的第一衍射光栅和第二衍射光栅，并且被配置成使得在三个不同波长的入射光束中，在一个光束中衍射的衍射效率在第一衍射光栅是预定值或更小，并且在第二衍射光栅上衍射的另外两个不同的入射光束中的衍射效率是预定值或更小。这种布置可以实现能够以简单配置衍射三种不同波长光束的衍射光学元件。

10. 发明申请

US20050094693A1 Semiconductor laser unit and optical head device 有权
标题翻译：半导体激光单元和光头设备
公开(公告)号：US20050094693A1
公开(公告)日：2005-05-05
申请号：US10976811
申请日：2004-11-01
申请人： Masahisa Shinoda , Kenya Nakai
发明人： Masahisa Shinoda , Kenya Nakai
IPC分类号： G11B7/08 , G11B7/125 , G11B7/22 , H01S5/022 , H01S5/40 , H01S5/00
CPC分类号： G11B7/1275 , G11B7/082 , G11B7/22 , H01S5/02212 , H01S5/02268 , H01S5/02296 , H01S5/4031 , H01S5/4087
摘要： A semiconductor laser unit includes a plurality of semiconductor laser elements arranged parallel with one another in a laser beam-emitting direction, and a base for positioning and fixing the plurality of semiconductor laser elements. The plurality of semiconductor laser elements are arranged such that a laser beam emitted from the semiconductor laser element greatest in astigmatism, of the plurality of semiconductor laser elements, is coincident in its axis with a reference axis of the base. In the case that the semiconductor laser unit is arranged on an optical head device, the focusing characteristic on the plurality of laser beams can be improved.
摘要翻译：半导体激光单元包括在激光束发射方向上彼此平行布置的多个半导体激光元件和用于定位和固定多个半导体激光元件的基底。多个半导体激光元件被布置成使得从多个半导体激光元件中以散光最大的半导体激光元件发射的激光束在其轴线与基座的参考轴线重合。在半导体激光单元配置在光学头装置上的情况下，可以提高多个激光束的聚焦特性。

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