公开(公告)号：US06983005B2

公开(公告)日：2006-01-03

申请号：US10056255

申请日：2002-01-24

申请人： Katsushige Masui ,  Kazuhiro Tsuchida

发明人： Katsushige Masui ,  Kazuhiro Tsuchida

IPC分类号： H01S3/00 ,  H01S3/30 ,  G11B7/135

CPC分类号： G11B7/1353 ,  G02B5/32 ,  G11B7/123 ,  G11B7/1275 ,  G11B2007/0006 ,  H01S5/02208 ,  H01S5/02248 ,  H01S5/02296 ,  H01S5/4025 ,  Y10S372/705

摘要： It is an object of the invention to provide a holographic laser and an optical pickup, with which it is possible to read from and write to a plurality of types of optical disks with different read wavelengths, and to achieve a more compact apparatus. The holographic laser includes for example a package, two semiconductor laser elements and a photodiode for reading out signals accommodated within the package, a holographic element positioned proximate to or in close contact with the top of a glass window, and a wavelength separating element positioned proximate to or in close contact with the top of the holographic element. The holographic laser is integrally formed as a single component.

公开(公告)号：US07911922B2

公开(公告)日：2011-03-22

申请号：US11819443

申请日：2007-06-27

申请人： Katsushige Masui

发明人： Katsushige Masui

IPC分类号： G11B7/135

CPC分类号： G11B7/123 ,  G11B7/0903 ,  G11B7/0916 ,  G11B7/1275 ,  G11B7/131 ,  G11B7/1353 ,  G11B2007/0006

摘要： A lens-side grating diffracts, in a direction of an emitter-side grating, two laser beams passed through the lens-side grating from an optical disk side. The emitter-side grating substantially passes the laser beam having a longer wavelength than the other laser beam, and directs it to a desired region of the light receiving element. The emitter-side grating diffracts the laser beam having a shorter wavelength than the other laser beam to direct a +1st diffracted beam of the laser beam thus diffracted to the same light receiving region as a 0th diffracted beam of the other laser beam. Such a structure may be employed that a −1st diffracted beam of the laser beam of the longer wavelength is directed to the same light receiving region as the 0th diffracted beam (passed beam) of the laser beam of the short wavelength.

摘要翻译： 透镜侧光栅在发射侧光栅的方向衍射从光盘侧通过透镜侧光栅的两束激光。 发射极侧光栅基本上通过具有比其他激光束更长波长的激光束，并将其引导到光接收元件的期望区域。 发射极侧光栅衍射具有比其他激光束更短波长的激光束，以将激光束的+第一衍射光束引导到与另一激光束的第0衍射光束相同的光接收区域。 可以采用这样的结构：较长波长的激光束的第一衍射光束被引导到与短波长的激光束的第0衍射光束（通过光束）相同的光接收区域。

公开(公告)号：US07649825B2

公开(公告)日：2010-01-19

申请号：US10551365

申请日：2004-03-19

申请人： Kazuhiro Tsuchida ,  Toshiya Nagahama ,  Keiji Sakai ,  Tetsuo Ueyama ,  Katsushige Masui ,  Naotaka Otsuka

发明人： Kazuhiro Tsuchida ,  Toshiya Nagahama ,  Keiji Sakai ,  Tetsuo Ueyama ,  Katsushige Masui ,  Naotaka Otsuka

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G11B7/0901 ,  G11B2007/0013

摘要： An object of the invention is to provide a splitter, a light emitter, and an optical pickup apparatus which can realize a stable track servo. Because of the structure of an optical system including an objective lens (27) and a hologram pattern (25), even when the hologram pattern (25) is irradiated with a reflected light from one recording layer other than another recording layer in a focused state, first and second TES splitting portions (35, 36) are not irradiated with the reflected light from the one recording layer, but the reflected light is led to an axis vicinity portion (38) only. Accordingly, light reception by first and second TES light receiving portions (45, 46) is prevented, accurate track position information and deviation information can be positively acquired, and troubles such as the objective lens (27) being driven beyond a movable range can be eliminated.

摘要翻译： 本发明的目的是提供一种能够实现稳定轨道伺服的分路器，光发射器和光拾取装置。 由于包括物镜（27）和全息图（25）的光学系统的结构，即使当全息图图案（25）在聚焦状态下从除另一个记录层之外的一个记录层的反射光照射时 第一和第二TES分割部分（35,36）不被来自一个记录层的反射光照射，但是反射光仅被引导到轴附近部分（38）。 因此，能够防止由第一和第二TES光接收部分（45,46）的光接收，可以肯定地获取精确的轨道位置信息和偏差信息，并且诸如物镜（27）被驱动超出可移动范围的问题可以是 消除了

公开(公告)号：US20080013434A1

公开(公告)日：2008-01-17

申请号：US11819443

申请日：2007-06-27

申请人： Katsushige Masui

发明人： Katsushige Masui

IPC分类号： G11B7/135 ,  G11B7/00

CPC分类号： G11B7/123 ,  G11B7/0903 ,  G11B7/0916 ,  G11B7/1275 ,  G11B7/131 ,  G11B7/1353 ,  G11B2007/0006

摘要： A lens-side grating diffracts, in a direction of an emitter-side grating, two laser beams passed through the lens-side grating from an optical disk side. The emitter-side grating substantially passes the laser beam having a longer wavelength than the other laser beam, and directs it to a desired region of the light receiving element. The emitter-side grating diffracts the laser beam having a shorter wavelength than the other laser beam to direct a +1st diffracted beam of the laser beam thus diffracted to the same light receiving region as a 0th diffracted beam of the other laser beam. Such a structure may be employed that a −1st diffracted beam of the laser beam of the longer wavelength is directed to the same light receiving region as the 0th diffracted beam (passed beam) of the laser beam of the short wavelength.

摘要翻译： 透镜侧光栅在发射侧光栅的方向衍射从光盘侧通过透镜侧光栅的两束激光。 发射极侧光栅基本上通过具有比其他激光束更长波长的激光束，并将其引导到光接收元件的期望区域。 发射极侧光栅衍射具有比其他激光束更短波长的激光束，以将激光束的+第一衍射光束引导到与另一激光束的第0衍射光束相同的光接收区域。 可以采用这样的结构：较长波长的激光束的第一衍射光束被引导到与短波长的激光束的第0衍射光束（通过光束）相同的光接收区域。

公开(公告)号：US20060262695A1

公开(公告)日：2006-11-23

申请号：US10551365

申请日：2004-03-19

申请人： Kazuhiro Tsuchida ,  Toshiya Nagahama ,  Keiji Sakai ,  Tetsuo Ueyama ,  Katsushige Masui ,  Naotaka Otsuka

发明人： Kazuhiro Tsuchida ,  Toshiya Nagahama ,  Keiji Sakai ,  Tetsuo Ueyama ,  Katsushige Masui ,  Naotaka Otsuka

IPC分类号： G11B7/20

CPC分类号： G11B7/1353 ,  G11B7/0901 ,  G11B2007/0013

摘要： An object of the invention is to provide a splitter, a light emitter, and an optical pickup apparatus which can realize a stable track servo. Because of the structure of an optical system including an objective lens (27) and a hologram pattern (25), even when the hologram pattern (25) is irradiated with a reflected light from one recording layer other than another recording layer in a focused state, first and second TES splitting portions (35, 36) are not irradiated with the reflected light from the one recording layer, but the reflected light is led to an axis vicinity portion (38) only. Accordingly, light reception by first and second TES light receiving portions (45, 46) is prevented, accurate track position information and deviation information can be positively acquired, and troubles such as the objective lens (27) being driven beyond a movable range can be eliminated.

摘要翻译： 本发明的目的是提供一种能够实现稳定轨道伺服的分路器，光发射器和光拾取装置。 由于包括物镜（27）和全息图（25）的光学系统的结构，即使当全息图图案（25）在聚焦状态下从除另一个记录层之外的一个记录层的反射光照射时 第一和第二TES分割部分（35,36）不被来自一个记录层的反射光照射，但是反射光仅被引导到轴附近部分（38）。 因此，能够防止由第一和第二TES光接收部分（45,46）的光接收，可以肯定地获取精确的轨道位置信息和偏差信息，并且诸如物镜（27）被驱动超出可移动范围的问题可以是 消除了

公开(公告)号：US07106682B2

公开(公告)日：2006-09-12

申请号：US11060680

申请日：2005-02-16

申请人： Tetsuo Ueyama ,  Keiji Sakai ,  Yukio Kurata ,  Katsushige Masui ,  Naotaka Otsuka ,  Renzaburo Miki ,  Hiroshige Hirajima ,  Noboru Fujita

发明人： Tetsuo Ueyama ,  Keiji Sakai ,  Yukio Kurata ,  Katsushige Masui ,  Naotaka Otsuka ,  Renzaburo Miki ,  Hiroshige Hirajima ,  Noboru Fujita

IPC分类号： G11B7/00 ,  G11B7/135

CPC分类号： G11B7/131 ,  G11B7/0901 ,  G11B7/0903 ,  G11B7/0906 ,  G11B7/0908 ,  G11B7/0916 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1356 ,  G11B7/1365 ,  G11B7/1381 ,  G11B7/22 ,  G11B2007/0006

摘要： An optical pickup can be provided, the optical pickup being capable of recording and playback of a plurality of optical disks having different specs by using light beams of different wavelengths, and further being suitable for integrating the semiconductor lasers and light receiving elements into a single package, by including: first and second semiconductor lasers adjacently disposed; a three-beam diffraction grating for generating three beams for tracking control; a second hologram element for diffracting light of the second semiconductor laser to guide it to a photosensor; a complex polarization beam splitter (PBS) for reflecting only light from the first semiconductor laser; and a first hologram element for diffracting light of the first semiconductor laser to guide it to the photosensor.

公开(公告)号：US20050100061A1

公开(公告)日：2005-05-12

申请号：US10954923

申请日：2004-09-29

申请人： Katsushige Masui ,  Kazuhiro Tsuchida ,  Kazunori Matsubara ,  Masahiro Ikehara ,  Keiji Sakai ,  Tetsuo Ueyama ,  Toshiya Nagahama

发明人： Katsushige Masui ,  Kazuhiro Tsuchida ,  Kazunori Matsubara ,  Masahiro Ikehara ,  Keiji Sakai ,  Tetsuo Ueyama ,  Toshiya Nagahama

IPC分类号： G11B7/09 ,  G11B7/00 ,  G11B7/12 ,  G11B7/125 ,  G11B7/13 ,  G11B7/135 ,  H01S3/10

CPC分类号： G11B7/131 ,  G11B7/0903 ,  G11B7/094 ,  G11B7/1353 ,  G11B2007/0013

摘要： To read information from a target information recording surface reliably by canceling DC offsets in tracking-signal detection signals is provided. In effecting tracking servo by 3-beam method, auxiliary light receiving domains D3—1, D3—2, D8—1, D8—2 are provided. The auxiliary light receiving domain receives images formed by the light returned from a different information recording surface from the one targeted for reading. Sub beams of ± first-order diffracted light enter the light receiving domains D3, D8, D1, D10. With respect to the diffraction direction of the hologram, the auxiliary light receiving domains D3—1, D3—2 (D8 1, D8—2) are provided on both sides of the light receiving domain D3 (D8). Since signals are computed as: D8-(D8—1+D8—2); and D3-(D3—1+D3—2) with the internal connection, DC offsets can be canceled in RES signals (D1+D3, D8+D10) used in the DPP method.

摘要翻译： 提供通过消除跟踪信号检测信号中的DC偏移来可靠地从目标信息记录表面读取信息。 通过三光束法实现跟踪伺服，辅助光接收区域D 3 - 1，D 3 - 2，D 8 - 1， 提供了D 8 - - 2。 辅助光接收区域接收由不同信息记录表面返回的光从与读取对象相对应的光形成的图像。 ±一级衍射光的子光进入光接收区域D 3，D 8，D 1，D 10。对于全息图的衍射方向，辅助光接收区域D 3 - > 1，D 3→2（D 8 2）设置在光接收区域D 3的两侧 （D8）。 由于信号被计算为：D 8 - （D 8 - 1 + D 8 - 2）; 和D 3 - （D 3 - - 1 + D 3 - 2）与内部连接时，RES信号可以取消DC偏移（D 1 + D 3，D 8 + D 10）。

公开(公告)号：US06868055B2

公开(公告)日：2005-03-15

申请号：US09907880

申请日：2001-07-12

申请人： Tetsuo Ueyama ,  Keiji Sakai ,  Yukio Kurata ,  Katsushige Masui ,  Naotaka Otsuka ,  Renzaburo Miki ,  Hiroshige Hirajima ,  Noboru Fujita

发明人： Tetsuo Ueyama ,  Keiji Sakai ,  Yukio Kurata ,  Katsushige Masui ,  Naotaka Otsuka ,  Renzaburo Miki ,  Hiroshige Hirajima ,  Noboru Fujita

IPC分类号： G11B7/00 ,  G11B7/09 ,  G11B7/12 ,  G11B7/125 ,  G11B7/13 ,  G11B7/135 ,  G11B7/22

CPC分类号： G11B7/131 ,  G11B7/0901 ,  G11B7/0903 ,  G11B7/0906 ,  G11B7/0908 ,  G11B7/0916 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1356 ,  G11B7/1365 ,  G11B7/1381 ,  G11B7/22 ,  G11B2007/0006

摘要： An optical pickup can be provided, the optical pickup being capable of recording and playback of a plurality of optical disks having different specs by using light beams of different wavelengths, and further being suitable for integrating the semiconductor lasers and light receiving elements into a single package, by including: first and second semiconductor lasers adjacently disposed; a three-beam diffraction grating for generating three beams for tracking control; a second hologram element for diffracting light of the second semiconductor laser to guide it to a photosensor; a complex polarization beam splitter (PBS) for reflecting only light from the first semiconductor laser; and a first hologram element for diffracting light of the first semiconductor laser to guide it to the photosensor.

摘要翻译： 可以提供光学拾取器，光学拾取器能够通过使用不同波长的光束来记录和重放具有不同规格的多个光盘，并且还适于将半导体激光器和光接收元件集成到单个封装 通过包括：相邻设置的第一和第二半导体激光器; 用于产生用于跟踪控制的三个光束的三光束衍射光栅; 第二全息元件，用于衍射第二半导体激光器的光以将其引导到光电传感器; 用于仅反射来自第一半导体激光器的光的复极化分束器（PBS）; 以及用于衍射第一半导体激光器的光以将其引导到光电传感器的第一全息元件。