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1. 发明授权

US07254107B2 Optical head and optical recording and reproducing apparatus 失效
标题翻译：光头和光记录和再现装置
公开(公告)号：US07254107B2
公开(公告)日：2007-08-07
申请号：US10817836
申请日：2004-04-06
申请人： Hidenori Wada , Tomotada Kamei , Sadao Mizuno , Hideki Hayashi
发明人： Hidenori Wada , Tomotada Kamei , Sadao Mizuno , Hideki Hayashi
IPC分类号： G11B7/00
CPC分类号： G11B7/1263 , G11B7/1378 , G11B7/1381 , G11B7/13922 , G11B2007/0006
摘要： An optical head is provided with: an objective-lens-use opening that determines an aperture of the objective lens; a light-source light-quantity controlling opening that aperture-controls light that has been separated by the light separation device; a light detector that receives light that has been aperture-controlled by the light-source light-quantity controlling opening; and a light detector that receives light that has been reflected by the optical recording medium, and has an arrangement in which: the length of the optical light path from the spherical aberration correcting device to the objective-lens-use opening is made virtually the same as a length of the optical light path from the spherical aberration correcting device to the light-source light-quantity controlling opening, and the aperture of the light-source light-quantity controlling opening has virtually the same size as the aperture of the objective-lens-use opening. The objective of the present invention is to provide an optical head in which a signal outputted from the light quantity detection device is unchanged even when the spherical aberration correcting device is driven so that by using this signal, the quantity of light from the light source is set to an appropriate value.
摘要翻译：光学头设置有：确定物镜孔径的物镜使用开口; 光源光量控制开口，其对由所述光分离装置分离的光进行开光控制; 光检测器，其接收由光源光量控制开口进行了光圈控制的光; 以及光检测器，其接收由光记录介质反射的光，并且具有以下配置：使从球面像差校正装置到物镜使用开口的光路的长度基本上相同作为从球面像差校正装置到光源光量控制开口的光路的长度，并且光源光量控制开口的开口具有与物镜光源控制开口的孔径几乎相同的尺寸，透镜使用开口。本发明的目的是提供一种光头，其中从光量检测装置输出的信号即使在球面像差校正装置被驱动时也不变，从而通过使用该信号，来自光源的光量是设置为适当的值。

2. 发明申请

US20050058052A1 Optical head and optical recording and reproducing apparatus 失效
标题翻译：光头和光记录和再现装置
公开(公告)号：US20050058052A1
公开(公告)日：2005-03-17
申请号：US10817836
申请日：2004-04-06
申请人： Hidenori Wada , Tomotada Kamei , Sadao Mizuno , Hideki Hayashi
发明人： Hidenori Wada , Tomotada Kamei , Sadao Mizuno , Hideki Hayashi
IPC分类号： G11B7/00 , G11B7/09 , G11B7/125 , G11B7/135
CPC分类号： G11B7/1263 , G11B7/1378 , G11B7/1381 , G11B7/13922 , G11B2007/0006
摘要： An optical head is provided with: an objective-lens-use opening that determines an aperture of the objective lens; a light-source light-quantity controlling opening that aperture-controls light that has been separated by the light separation device; a light detector that receives light that has been aperture-controlled by the light-source light-quantity controlling opening; and a light detector that receives light that has been reflected by the optical recording medium, and has an arrangement in which: the length of the optical light path from the spherical aberration correcting device to the objective-lens-use opening is made virtually the same as a length of the optical light path from the spherical aberration correcting device to the light-source light-quantity controlling opening, and the aperture of the light-source light-quantity controlling opening has virtually the same size as the aperture of the objective-lens-use opening. The objective of the present invention is to provide an optical head in which a signal outputted from the light quantity detection device is unchanged even when the spherical aberration correcting device is driven so that by using this signal, the quantity of light from the light source is set to an appropriate value.
摘要翻译：光学头设置有：确定物镜孔径的物镜使用开口; 光源光量控制开口，其对由所述光分离装置分离的光进行开光控制; 光检测器，其接收由光源光量控制开口进行了光圈控制的光; 以及光检测器，其接收由光记录介质反射的光，并且具有以下配置：使从球面像差校正装置到物镜使用开口的光路的长度基本上相同作为从球面像差校正装置到光源光量控制开口的光路的长度，并且光源光量控制开口的开口具有与物镜光源控制开口的孔径几乎相同的尺寸，透镜使用开口。本发明的目的是提供一种光头，其中从光量检测装置输出的信号即使在球面像差校正装置被驱动时也不变，从而通过使用该信号，来自光源的光量是设置为适当的值。

3. 发明授权

US06873588B1 Converging element, optical head, and apparatus and method of optically recording and reproducing information 有权
标题翻译：聚光元件，光学头，以及光学记录和再现信息的装置和方法
公开(公告)号：US06873588B1
公开(公告)日：2005-03-29
申请号：US09700343
申请日：2000-03-14
申请人： Sadao Mizuno , Hiroaki Yamamoto , Hideki Hayashi , Jouji Anzai , Tomotada Kamei
发明人： Sadao Mizuno , Hiroaki Yamamoto , Hideki Hayashi , Jouji Anzai , Tomotada Kamei
IPC分类号： G11B7/1374 , G02B3/08 , G11B7/00 , G11B7/125 , G11B7/135
CPC分类号： G11B7/1367 , G02B3/08 , G11B7/1275 , G11B7/1353 , G11B7/1356 , G11B7/1374 , G11B7/139 , G11B7/13922 , G11B7/1398 , G11B2007/0006
摘要： An optical head reproduces optical disks of different disk plate thickness thicknesses t1 (0.6 mm) or t2 (1.2 mm) by using light beams of two wavelengths and one object lens. An converging element comprises a central portion and outer portion, wherein the central portion has optimum design plate thickness of 0.6*t1 to t1 and the outer portion has optimum design plate thickness of 0.6 mm. By providing a step difference in the converging element, information can be recorded or reproduced for an information medium of disk plate thickness t1 and for an information medium of disk plate thickness t2, in a state having small side lobes. Alternatively, a step difference is provided in the object lens, and optical distance L2 from a second light source to a condensing optical system is set to 80 to 95% of optical distance L1 from a first light source to the condensing optical system. Alternatively, only light of first wavelength is shielded or diffracted in a ring-like shape.
摘要翻译：光头通过使用两个波长的光束和一个物镜再现不同盘片厚度t1（0.6mm）或t2（1.2mm）的光盘。会聚元件包括中心部分和外部部分，其中中心部分具有0.6 * t1至t1的最佳设计板厚度，并且外部部分具有0.6mm的最佳设计板厚度。通过在会聚元件中提供阶梯差，可以在具有小的旁瓣的状态下，对于盘片厚度t1的信息介质和盘片厚度t2的信息介质来记录或再现信息。或者，在物镜中设置阶梯差，从第二光源到聚光光学系统的光学距离L2设定为从第一光源到聚光光学系统的光学距离L1的80〜95％。或者，只有第一波长的光被屏蔽或衍射成环状。

4. 发明授权

US06920102B2 Converging element, optical head, and apparatus and method of optically recording and reproducing information 有权
标题翻译：聚光元件，光学头，以及光学记录和再现信息的装置和方法
公开(公告)号：US06920102B2
公开(公告)日：2005-07-19
申请号：US10694899
申请日：2003-10-29
申请人： Sadao Mizuno , Hiroaki Yamamoto , Hideki Hayashi , Jouji Anzai , Tomotada Kamei
发明人： Sadao Mizuno , Hiroaki Yamamoto , Hideki Hayashi , Jouji Anzai , Tomotada Kamei
IPC分类号： G11B7/1374 , G02B3/08 , G11B7/00 , G11B7/125 , G11B7/135
CPC分类号： G11B7/1367 , G02B3/08 , G11B7/1275 , G11B7/1353 , G11B7/1356 , G11B7/1374 , G11B7/139 , G11B7/13922 , G11B7/1398 , G11B2007/0006
摘要： An optical head reproduces optical disks of different disk plate thickness t1 (0.6 mm) or t2 (1.2 mm) by using light beams of two wavelengths and one object lens. An converging element comprises a central portion and outer portion, wherein the central portion has optimum design plate thickness of 0.6*t1 to t1 and the outer portion has optimum design plate thickness of 0.6 mm. By providing a step difference in the converging element, information can be recorded or reproduced for an information medium of disk plate thickness t1 and for an information medium of disk plate thickness t2, in a state having small side lobes. Alternatively, a step difference is provided in the object lens, and optical distance L2 from a second light source to a condensing optical system is set to 80 to 95% of optical distance L1 from a first light source to the condensing optical system. Alternatively, only light of first wavelength is shielded or diffracted in a ring-like shape.
摘要翻译：光头通过使用两个波长的光束和一个物镜来再现不同盘片厚度t 1（0.6mm）或t 2（1.2mm）的光盘。收敛元件包括中心部分和外部部分，其中中心部分具有0.6 * t 1至t 1的最佳设计板厚度，并且外部部分具有0.6mm的最佳设计板厚度。通过在会聚元件中提供阶梯差，可以在具有小的旁瓣的状态下，对于盘片厚度t 1的信息介质和盘片厚度t 2的信息介质来记录或再现信息。或者，在物镜中设置阶梯差，从第二光源到聚光光学系统的光距离L 2设定为从第一光源到聚光光学系统的光学距离L 1的80〜95％。或者，只有第一波长的光被屏蔽或衍射成环状。

5. 发明授权

US06859428B2 Converging element, optical head, and apparatus and method of optically recording and reproducing information 有权
标题翻译：聚光元件，光学头，以及光学记录和再现信息的装置和方法
公开(公告)号：US06859428B2
公开(公告)日：2005-02-22
申请号：US10694993
申请日：2003-10-29
申请人： Sadao Mizuno , Hiroaki Yamamoto , Hideki Hayashi , Jouji Anzai , Tomotada Kamei
发明人： Sadao Mizuno , Hiroaki Yamamoto , Hideki Hayashi , Jouji Anzai , Tomotada Kamei
IPC分类号： G11B7/1374 , G02B3/08 , G11B7/00 , G11B7/125 , G11B7/135
CPC分类号： G11B7/1367 , G02B3/08 , G11B7/1275 , G11B7/1353 , G11B7/1356 , G11B7/1374 , G11B7/139 , G11B7/13922 , G11B7/1398 , G11B2007/0006
摘要： An optical head reproduces optical disks of different disk plate thickness t1 (0.6 mm) or t2 (1.2 mm) by using light beams of two wavelengths and one object lens. An converging element comprises a central portion and outer portion, wherein the central portion has optimum design plate thickness of 0.6*t1 to t1 and the outer portion has optimum design plate thickness of 0.6 mm. By providing a step difference in the converging element, information can be recorded or reproduced for an information medium of disk plate thickness t1 and for an information medium of disk plate thickness t2, in a state having small side lobes. Alternatively, a step difference is provided in the object lens, and optical distance L2 from a second light source to a condensing optical system is set to 80 to 95% of optical distance L1 from a first light source to the condensing optical system. Alternatively, only light of first wavelength is shielded or diffracted in a ring-like shape.
摘要翻译：光头通过使用两个波长的光束和一个物镜来再现不同盘片厚度t1（0.6mm）或t2（1.2mm）的光盘。会聚元件包括中心部分和外部部分，其中中心部分具有0.6 * t1至t1的最佳设计板厚度，并且外部部分具有0.6mm的最佳设计板厚度。通过在会聚元件中提供阶梯差，可以在具有小的旁瓣的状态下，对于盘片厚度t1的信息介质和盘片厚度t2的信息介质来记录或再现信息。或者，在物镜中设置阶梯差，从第二光源到聚光光学系统的光学距离L2设定为从第一光源到聚光光学系统的光学距离L1的80〜95％。或者，只有第一波长的光被屏蔽或衍射成环状。

6. 发明授权

US07079456B2 Optical recording head capable of correcting spherical aberration 失效
标题翻译：能够校正球面像差的光学记录头
公开(公告)号：US07079456B2
公开(公告)日：2006-07-18
申请号：US10613672
申请日：2003-07-03
申请人： Hidenori Wada , Yasuhiro Tanaka , Hideki Hayashi , Sadao Mizuno
发明人： Hidenori Wada , Yasuhiro Tanaka , Hideki Hayashi , Sadao Mizuno
IPC分类号： G11B7/95
CPC分类号： G11B7/1378 , G11B7/1392 , G11B7/13925 , G11B7/13927 , G11B2007/0006
摘要： An optical element having a high capture efficiency and rim intensity is provided. The optical element includes a central axis, a first curved surface extending in the transverse direction with respect to the central axis, a second curved surface extending in the transverse direction with respect to the central axis, and a peripheral surface extending between the first curved surface and the second curved surface. Light is refracted from the time light is incident on the first curved surface to the time the light is emitted from the second curved surface. Thereby, a light intensity distribution of the light emitted from the second curved surface and a light intensity distribution of the light incident on the first curved surface are different from each other, and a rim intensity improvement rate R, which is a rate of the rim intensity of the emitted light with respect to the rim intensity of the incident light is 1.07 or more and 1.5 or less, in which the rim intensity represents a ratio of the central intensity to the peripheral intensity.
摘要翻译：提供具有高捕获效率和边缘强度的光学元件。光学元件包括中心轴线，相对于中心轴线在横向方向上延伸的第一弯曲表面，相对于中心轴线沿横向方向延伸的第二弯曲表面，以及在第一弯曲表面和第二曲面。光从第一弯曲表面入射到光从第二弯曲表面发射的时间被折射。由此，从第二曲面发出的光的光强度分布和入射在第一曲面上的光的光强度分布彼此不同，作为轮缘的速度的轮辋强度提高率R 相对于入射光的边缘强度的发射光的强度为1.07以上且1.5以下，其中边缘强度表示中心强度与周边强度的比率。

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

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。

9. 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。

10. 发明申请

US20100149949A1 OPTICAL PICKUP AND OPTICAL DISC DEVICE 审中-公开
标题翻译：光学拾取和光盘设备
公开(公告)号：US20100149949A1
公开(公告)日：2010-06-17
申请号：US12712272
申请日：2010-02-25
申请人： Hisashi Senga , Tomotada Kamei , Kenzo Ishibashi , Hideki Hayashi , Yohichi Saitoh
发明人： Hisashi Senga , Tomotada Kamei , Kenzo Ishibashi , Hideki Hayashi , Yohichi Saitoh
IPC分类号： G11B7/135
CPC分类号： G11B7/1275 , G11B7/123 , G11B2007/0006
摘要： An optical pickup according to the present invention includes an integrated circuit element (LDD) 5 for driving first, second, and third semiconductor lasers 3, 4, and 5. The LDD 50 is shaped so as to have a rectangular principal face surrounded by one side, with a plurality of input/output pins being arranged along each side. The plurality of input/output pins include a first pin group connected to a blue-violet laser 5 whose oscillation wavelength is the shortest, a second pin group connected to a red laser 4, and a third pin group connected to an infrared laser 3. The wiring structure of the optical pickup includes a first transmission line 41 for connecting the first pin group to the blue-violet laser 5, a second transmission line 33 for connecting the second pin group to the red laser 4, and a third transmission line 31 for connecting the third pin group to the infrared laser 3, where the first transmission line 41 is shorter than both the second and third transmission lines 31 and 33. Of the rectangular principal face of the LDD 50, the side along which the first pin group is provided is orthogonal to the side along which the second pin group is provided or to the side along which the third pin group is provided.
摘要翻译：根据本发明的光拾取器包括用于驱动第一，第二和第三半导体激光器3,4和5的集成电路元件（LDD）5。LDD 50被成形为具有被一个包围的矩形主面其中沿着每一侧布置有多个输入/输出引脚。多个输入/输出引脚包括连接到振荡波长最短的蓝紫色激光器5的第一引脚组，连接到红色激光器4的第二引脚组和连接到红外激光器3的第三引脚组。光拾取器的布线结构包括用于将第一引线组连接到蓝紫激光器5的第一传输线41，用于将第二引脚组连接到红色激光器4的第二传输线33和第三传输线31 用于将第三引脚组连接到红外激光器3，其中第一传输线41比第二传输线31和第三传输线33短。在LDD 50的矩形主面中，第一引脚组被设置为与设置有第二引脚组的一侧或与设置第三引脚组的一侧正交。

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