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1. 发明授权

US5912868A Optical head for reproducing data from first and second optical disks 失效
标题翻译：用于从第一和第二光盘再现数据的光学头
公开(公告)号：US5912868A
公开(公告)日：1999-06-15
申请号：US918295
申请日：1997-08-25
申请人： Hideki Hayashi , Sadao Mizuno , Noboru Ito , Kenichiro Urairi , Yoshiaki Komma
发明人： Hideki Hayashi , Sadao Mizuno , Noboru Ito , Kenichiro Urairi , Yoshiaki Komma
IPC分类号： G11B7/14 , G11B7/00 , G11B7/12 , G11B7/125 , G11B7/135
CPC分类号： G11B7/1353 , G11B7/123 , G11B7/127 , G11B7/1356 , G11B7/1381 , G11B7/13922 , G11B2007/0006 , G11B2007/13727
摘要： An optical head for reproducing data from first and second optical disks which are different from each other in at least one of a base material thickness and an available wavelength, includes: a first light source for emitting a first light beam, the first light beam being used for reproducing data from the first optical disk: an optical system designed to converge the first light beam onto the first optical disk in accordance with a base material thickness and an available wavelength of the first optical disk: and a second light source for emitting a second light beam, the second light beam being used for reproducing data from the second optical disk, wherein an optical path length between the second light source and the optical system is different from an optical path length between the first light source and the optical system, and wherein the optical system converges the second light beam onto the second optical disk.
摘要翻译：一种用于从基材厚度和可用波长中的至少一个中彼此不同的第一和第二光盘再现数据的光学头包括：用于发射第一光束的第一光源，第一光束是用于从第一光盘再现数据：被设计为根据第一光盘的基材厚度和可用波长将第一光束会聚到第一光盘上的光学系统，以及用于发射第一光盘的第二光源第二光束，第二光束用于从第二光盘再现数据，其中第二光源和光学系统之间的光路长度不同于第一光源和光学系统之间的光程长度，并且其中所述光学系统将所述第二光束会聚到所述第二光盘上。

2. 发明授权

US5703856A Optical head and optical data recording and reproducing apparatus having the same 失效
标题翻译：具有该光头和光数据记录和再现装置的光头和光数据记录和重放装置
公开(公告)号：US5703856A
公开(公告)日：1997-12-30
申请号：US324262
申请日：1994-10-17
申请人： Hideki Hayashi , Sadao Mizuno , Noboru Ito , Kenichiro Urairi , Yoshiaki Komma
发明人： Hideki Hayashi , Sadao Mizuno , Noboru Ito , Kenichiro Urairi , Yoshiaki Komma
IPC分类号： G11B7/14 , G11B7/00 , G11B7/12 , G11B7/125 , G11B7/135
CPC分类号： G11B7/1353 , G11B7/123 , G11B7/127 , G11B7/1356 , G11B7/1381 , G11B7/13922 , G11B2007/0006 , G11B2007/13727
摘要： An optical head for reproducing data from first and second optical disks which are different from each other in at least one of a base material thickness and an available wavelength, includes: a first light source for emitting a first light beam, the first light beam being used for reproducing data from the first optical disk: an optical system designed to converge the first light beam onto the first optical disk in accordance with a base material thickness and an available wavelength of the first optical disk: and a second light source for emitting a second light beam, the second light beam being used for reproducing data from the second optical disk, wherein an optical path length between the second light source and the optical system is different from an optical path length between the first light source and the optical system, and wherein the optical system converges the second light beam onto the second optical disk.
摘要翻译：一种用于从基材厚度和可用波长中的至少一个中彼此不同的第一和第二光盘再现数据的光学头包括：用于发射第一光束的第一光源，第一光束是用于从第一光盘再现数据：被设计为根据第一光盘的基材厚度和可用波长将第一光束会聚到第一光盘上的光学系统，以及用于发射第一光盘的第二光源第二光束，第二光束用于从第二光盘再现数据，其中第二光源和光学系统之间的光路长度不同于第一光源和光学系统之间的光程长度，并且其中所述光学系统将所述第二光束会聚到所述第二光盘上。

3. 发明授权

US5920537A Correction element of lower light intensity around an optical axis of an optical head with a plurality of focal points 失效
标题翻译：具有多个焦点的光学头的光轴周围的较低光强度的校正元件
公开(公告)号：US5920537A
公开(公告)日：1999-07-06
申请号：US13183
申请日：1998-01-26
申请人： Yoshiaki Komma , Sadao Mizuno , Hideki Hayashi , Kenichiro Urairi
发明人： Yoshiaki Komma , Sadao Mizuno , Hideki Hayashi , Kenichiro Urairi
IPC分类号： G11B7/00 , G11B7/135 , G11B7/12
CPC分类号： G11B7/1378 , G11B7/1353 , G11B7/1367 , G11B7/1372 , G11B7/139 , G11B7/1398 , G11B2007/0006
摘要： An optical head apparatus which records or reproduces signals stably on optical disks having different thicknesses. A correction hologram element or a correction filter is provided between a light source and a 2-focus lens in order to decrease optical intensity at a portion distant from the optical axis or to change the optical path length. The light which passes the correction hologram element or a correction filter is converged by the 2-focus lens as a micro-spot on an optical disk. The 2-focus lens comprises a hologram lens which diffracts a part of the light beam and an object lens.
摘要翻译：一种在具有不同厚度的光盘上稳定地记录或再现信号的光学头装置。为了降低远离光轴的部分的光强度，或者改变光路长度，在光源和2焦点透镜之间设置校正全息元件或校正滤光器。通过校正全息元件或校正滤光器的光由作为微点的双焦点透镜会聚在光盘上。双焦点透镜包括衍射光束的一部分和物镜的全息透镜。

4. 发明授权

US5754512A Correction elements to lower light intensity around an optical axis of an optical head with a plurality of focal points 失效
标题翻译：校正元件，用于使具有多个焦点的光学头的光轴周围的光强度降低
公开(公告)号：US5754512A
公开(公告)日：1998-05-19
申请号：US654771
申请日：1996-05-29
申请人： Yoshiaki Komma , Sadao Mizuno , Hideki Hayashi , Kenichiro Urairi
发明人： Yoshiaki Komma , Sadao Mizuno , Hideki Hayashi , Kenichiro Urairi
IPC分类号： G11B7/00 , G11B7/135
CPC分类号： G11B7/1378 , G11B7/1353 , G11B7/1367 , G11B7/1372 , G11B7/139 , G11B7/1398 , G11B2007/0006
摘要： An optical head apparatus which records or reproduces signals stably on optical disks having different thicknesses. A correction hologram element or a correction filter is provided between a light source and a 2-focus lens in order to decrease optical intensity at a portion distant from the optical axis or to change the optical path length. The light which passes the correction hologram element or a correction filter is converged by the 2-focus lens as a micro-spot on an optical disk. The 2-focus lens comprises a hologram lens which diffracts a part of the light beam and an object lens.
摘要翻译：一种在具有不同厚度的光盘上稳定地记录或再现信号的光学头装置。为了降低远离光轴的部分的光强度，或者改变光路长度，在光源和2焦点透镜之间设置校正全息元件或校正滤光器。通过校正全息元件或校正滤光器的光由作为微点的双焦点透镜会聚在光盘上。双焦点透镜包括衍射光束的一部分和物镜的全息透镜。

5. 发明授权

US5345072A Focus detection device for reading information from an optical recording medium 失效
标题翻译：用于从光学记录介质读取信息的对焦检测装置
公开(公告)号：US5345072A
公开(公告)日：1994-09-06
申请号：US997293
申请日：1992-12-23
申请人： Hideki Hayashi , Shinichi Tanaka , Sadao Mizuno , Noboru Ito , Yoshiaki Komma
发明人： Hideki Hayashi , Shinichi Tanaka , Sadao Mizuno , Noboru Ito , Yoshiaki Komma
IPC分类号： G11B7/09 , G11B7/135 , G01J1/20 , G11B7/00
CPC分类号： G11B7/1353 , G11B7/0912
摘要： A focus detection device for use in a focus detection device includes a main light source and two auxiliary light sources. These auxiliary light sources are offset to the main light source along the optical axis of the main optical system while being symmetrically positioned perpendicular to the optical axis. A exposure units having apertures are provided above the two auxiliary light sources for constricting the amount of auxiliary lights so that the convergence of the auxiliary beams on the optical disk is less than that of the main light beam. As a result, an optical system with a broad focus error detection range can be constructed while increasing the convergence of the main light beam.
摘要翻译：用于焦点检测装置的焦点检测装置包括主光源和两个辅助光源。这些辅助光源沿着主光学系统的光轴偏移到主光源，同时垂直于光轴对称定位。具有孔径的曝光单元设置在两个辅助光源上方，用于限制辅助光的量，使得辅助光束在光盘上的会聚小于主光束的会聚。结果，可以在增加主光束的会聚的同时构造具有宽聚焦误差检测范围的光学系统。

6. 发明授权

US5440536A Optical disk apparatus for producing information recorded on a recording track 失效
标题翻译：用于产生记录在记录磁道上的信息的光盘装置
公开(公告)号：US5440536A
公开(公告)日：1995-08-08
申请号：US202518
申请日：1994-02-28
申请人： Noboru Ito , Shinichi Tanaka , Hidenori Wada , Sadao Mizuno , Hideki Hayashi
发明人： Noboru Ito , Shinichi Tanaka , Hidenori Wada , Sadao Mizuno , Hideki Hayashi
IPC分类号： G11B7/00 , G11B7/0045 , G11B7/005 , G11B7/09 , G11B7/13
CPC分类号： G11B7/131 , G11B7/0045 , G11B7/0943
摘要： An optical disk apparatus includes a photodetector divided into eight segments which receive the laser beam reflected from the optical disk and produce signals based on the laser beam sport thereon. In this apparatus, these eight segments are combined in several patterns for the recorded information reproduction, the tracking error detection, and the focus error detection, respectively. For the recorded information reproduction, eight segments are used as combined in three segment cells RC1, RC2, and RC3 which extend in a direction parallel to each other such that the segment cell RC1 is in center and is sandwitched by other segment cell RC2 and RC3. The segment cells RC1, RC2, and RC3 are located perpendicular to the recording track of the optical disk and produce three signals C, R, and L indicative of the laser beam intensity of the laser beam spot thereon, respectively. Thus obtained signals C is multiplied by a constant K and then added to the other signals R and L. By selecting suitable value as the constant K, the crosstalk component in the reproduced signal can be reduced.
摘要翻译：光盘装置包括被分成八个部分的光电检测器，其接收从光盘反射的激光束并基于其上的激光束运动产生信号。在这种装置中，这八个段分别以记录信息再现，跟踪误差检测和聚焦误差检测的多种模式组合。对于记录的信息再现，八个段被组合在三个分段单元RC1，RC2和RC3中，它们在彼此平行的方向上延伸，使得分段单元RC1处于中心并被其它分段单元RC2和RC3 。分段单元RC1，RC2和RC3垂直于光盘的记录轨道定位，并分别产生表示激光束点的激光束强度的三个信号C，R和L。这样获得的信号C乘以常数K，然后加到其他信号R和L.通过选择合适的值作为常数K，可以减少再现信号中的串扰分量。

7. 发明授权

US5347504A Optical disk apparatus for optically recording or reproducing information on an optical recording medium 失效
标题翻译：用于在光学记录介质上光学记录或再现信息的光盘装置
公开(公告)号：US5347504A
公开(公告)日：1994-09-13
申请号：US993384
申请日：1992-12-18
申请人： Noboru Ito , Shinichi Tanaka , Hidenori Wada , Sadao Mizuno , Hideki Hayashi
发明人： Noboru Ito , Shinichi Tanaka , Hidenori Wada , Sadao Mizuno , Hideki Hayashi
IPC分类号： G11B7/00 , G11B7/0045 , G11B7/005 , G11B7/09 , G11B7/13
CPC分类号： G11B7/131 , G11B7/0045 , G11B7/0943
摘要： An optical disk apparatus includes a photodetector divided into eight segments which receive the laser beam reflected from the optical disk and produce signals based on the laser beam sport thereon. In this apparatus, these eight segments are combined in several patterns for the recorded information reproduction, the tracking error detection, and the focus error detection, respectively. For the recorded information reproduction, eight segments are used as combined in three segment cells RC1, RC2, and RC3 which extend in a direction parallel to each other such that the segment cell RC1 is in center and is sandwitched by other segment cell RC2 and RC3. The segment cells RC1, RC2, and RC3 are located perpendicular to the recording track of the optical disk and produce three signals C, R, and L indicative of the laser beam intensity of the laser beam spot thereon, respectively. Thus obtained signals C is multiplied by a constant K and then added to the other signals R and L. By selecting suitable value as the constant K, the crosstalk component in the reproduced signal can be reduced.
摘要翻译：光盘装置包括被分成八个部分的光电检测器，其接收从光盘反射的激光束并基于其上的激光束运动产生信号。在这种装置中，这八个段分别以记录信息再现，跟踪误差检测和聚焦误差检测的多种模式组合。对于记录的信息再现，八个段被组合在三个分段单元RC1，RC2和RC3中，它们在彼此平行的方向上延伸，使得分段单元RC1处于中心并被其它分段单元RC2和RC3 。分段单元RC1，RC2和RC3垂直于光盘的记录轨道定位，并分别产生表示激光束点的激光束强度的三个信号C，R和L。这样获得的信号C乘以常数K，然后加到其他信号R和L.通过选择合适的值作为常数K，可以减少再现信号中的串扰分量。

8. 发明授权

US5430701A Optical disk apparatus for optically recording or reproducing information on an optical recording medium 失效
标题翻译：用于在光学记录介质上光学记录或再现信息的光盘装置
公开(公告)号：US5430701A
公开(公告)日：1995-07-04
申请号：US202822
申请日：1994-02-28
申请人： Noboru Ito , Shinichi Tanaka , Hidenori Wada , Sadao Mizuno , Hideki Hayashi
发明人： Noboru Ito , Shinichi Tanaka , Hidenori Wada , Sadao Mizuno , Hideki Hayashi
IPC分类号： G11B7/00 , G11B7/0045 , G11B7/005 , G11B7/09 , G11B7/13
CPC分类号： G11B7/131 , G11B7/0045 , G11B7/0943
摘要： An optical disk apparatus includes a photodetector divided into eight segments which receive the laser beam reflected from the optical disk and produce signals based on the laser beam sport thereon. In this apparatus, these eight segments are combined in several patterns for the recorded information reproduction, the tracking error detection, and the focus error detection, respectively. For the recorded information reproduction, eight segments are used as combined in three segment cells RC1, RC2, and RC3 which extend in a direction parallel to each other such that the segment cell RC1 is in center and is sandwitched by other segment cell RC2 and RC3. The segment cells RC1, RC2, and RC3 are located perpendicular to the recording track of the optical disk and produce three signals C, R, and L indicative of the laser beam intensity of the laser beam spot thereon, respectively. Thus obtained signals C is multiplied by a constant K and then added to the other signals R and L. By selecting suitable value as the constant K, the crosstalk component in the reproduced signal can be reduced.
摘要翻译：光盘装置包括被分成八个部分的光电检测器，其接收从光盘反射的激光束并基于其上的激光束运动产生信号。在这种装置中，这八个段分别以记录信息再现，跟踪误差检测和聚焦误差检测的多种模式组合。对于记录的信息再现，八个段被组合在三个分段单元RC1，RC2和RC3中，它们在彼此平行的方向上延伸，使得分段单元RC1处于中心并被其它分段单元RC2和RC3 。分段单元RC1，RC2和RC3垂直于光盘的记录轨道定位，并分别产生表示激光束点的激光束强度的三个信号C，R和L。这样获得的信号C乘以常数K，然后加到其他信号R和L.通过选择合适的值作为常数K，可以减少再现信号中的串扰分量。

9. 发明授权

US07760612B2 Optical element and optical head device using it, and optical information device using this optical head device, and computer, optical disk player, car navigation system, optical disk recorder and optical disk server using this optical information device 有权
标题翻译：使用它的光学元件和光学头装置，以及使用该光学头装置的光学信息装置，以及使用该光学信息装置的计算机，光盘播放器，汽车导航系统，光盘记录器和光盘服务器
公开(公告)号：US07760612B2
公开(公告)日：2010-07-20
申请号：US10504373
申请日：2003-01-30
申请人： Yoshiaki Komma , Sadao Mizuno , Kousei Sano
发明人： Yoshiaki Komma , Sadao Mizuno , Kousei Sano
IPC分类号： G11B7/00
CPC分类号： G11B7/1356 , G11B7/1275 , G11B7/1362 , G11B7/1365 , G11B7/1374 , G11B7/1378 , G11B7/1392 , G11B7/1395 , G11B2007/0006
摘要： Providing an objective lens with a large numerical aperture (NA), the present invention records or plays conventional optical disks such as CDs and DVDs using an optical head capable of recording or reproducing high-density optical disks. An optical element (8) is provided between a first and second laser light source and an objective lens (18) for the purpose of converting a wave front of a second optical beam 32. Furthermore, the optical element (8) and the objective lens (18) are fixed to move as a single piece.
摘要翻译：提供具有大数值孔径（NA）的物镜，本发明使用能够记录或再现高密度光盘的光学头记录或播放诸如CD和DVD的常规光盘。为了转换第二光束32的波前，光学元件（8）设置在第一和第二激光源与物镜（18）之间。此外，光学元件（8）和物镜（18）固定成单件移动。

10. 发明授权

US07486606B2 Optical head and optical information apparatus for recording or reproducing information on an information recording medium 有权
标题翻译：用于在信息记录介质上记录或再现信息的光头和光信息装置
公开(公告)号：US07486606B2
公开(公告)日：2009-02-03
申请号：US11151272
申请日：2005-06-14
申请人： Kousei Sano , Yoshiaki Komma , Sadao Mizuno
发明人： Kousei Sano , Yoshiaki Komma , Sadao Mizuno
IPC分类号： G11B7/00
CPC分类号： G11B7/1353
摘要： An optical head which is capable of realizing a stable tracking control, even if the rotational center of an information recording medium is not located on the extension line of the transfer directions of a light-concentrating element, includes: a semiconductor laser which emits a beam of light; an objective lens which concentrates the beam of light on an optical disk; a transfer mechanism which transfers the objective lens between the outermost circumference and the innermost circumference of the recording area of the optical disk along the optical disk; and a photo-detector which detects a beam of light that returns from the optical disk. The photo-detector includes a plurality of areas which are divided by a division line. The division line is set parallel to the tangential directions of the track in a predetermined position on the transfer line of the objective lens between the outermost circumference and the innermost circumference of the recording area, and the plurality of areas are divided, by a lateral division line which intersects the division line, into a first area on which a beam of light that mainly includes a tracking component is incident and a second area on which a beam of light that does not include the tracking component is incident.
摘要翻译：即使信息记录介质的旋转中心不位于聚光元件的传送方向的延长线上，也能够实现稳定的跟踪控制的光学头包括：发射光束的半导体激光器的光将光束聚集在光盘上的物镜; 传送机构，其沿着光盘在光盘的记录区域的最外圆周和最内圆周之间传送物镜; 以及光检测器，其检测从光盘返回的光束。光检测器包括由划分线划分的多个区域。分割线与记录区域的最外圆周和最内圆周之间的物镜的传送线上的预定位置处的轨道的切线方向平行设置，并且通过横向划分来划分多个区域与分割线相交的第一区域进入主要包括跟踪分量的光束入射的第一区域和不包括跟踪组件的光束入射的第二区域。

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