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1. 发明授权

US07649825B2 Splitting element, light emitter, and optical pickup apparatus 失效
标题翻译：分离元件，光发射器和光学拾取装置
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

2. 发明申请

US20060262695A1 Split body, light emitting body and optical pickup device 失效
标题翻译：分体式，发光体和光学拾取装置
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

3. 发明授权

US07483360B2 Optical pickup device using polarizing hologram element and hologram laser therefor 失效
标题翻译：使用偏光全息元件和全息激光的光学拾取装置
公开(公告)号：US07483360B2
公开(公告)日：2009-01-27
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： G11B7/00
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，提供辅助光接收域D3-1，D3-2，D8-1，D8-2。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域D3，D8，D1，D10。对于全息图的衍射方向，辅助光接收区域D3-1，D3-2（D8-1，D8-2）设置在光接收区域D3（D8）的两侧。由于信号计算如下：D8-（D8-1 + D8-2）; 和D3-（D3-1 + D3-2）内部连接时，可以在DPP方式中使用的RES信号（D1 + D3，D8 + D10）中取消DC偏移。

4. 发明申请

US20050100061A1 Optical pickup and hologram laser 失效
标题翻译：光学拾取和全息激光
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）。

5. 发明申请

US20050141391A1 Optical pickup 有权
公开(公告)号：US20050141391A1
公开(公告)日：2005-06-30
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 , G11B7/09 , 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.

6. 发明授权

US07106682B2 Optical pickup 有权
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.

7. 发明授权

US06868055B2 Optical pickup 失效
标题翻译：光学拾音
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。

8. 发明授权

US07136409B2 Semiconductor laser device and optical pickup device 失效
标题翻译：半导体激光器件和光学拾取器件
公开(公告)号：US07136409B2
公开(公告)日：2006-11-14
申请号：US10812317
申请日：2004-03-30
申请人： Masahiro Ikehara , Katsushige Masui , Kazuhiro Tsuchida , Keiji Sakai
发明人： Masahiro Ikehara , Katsushige Masui , Kazuhiro Tsuchida , Keiji Sakai
IPC分类号： H01S3/08 , G11B7/12
CPC分类号： G11B7/1353 , G02B27/106 , G02B27/1086 , G02B27/145 , G02B27/283 , G11B7/123 , G11B7/131 , G11B7/1381 , H01S5/02212 , H01S5/02248 , H01S5/02296
摘要： In this semiconductor laser device, a polarization hologram transmits an outgoing beam directed from a semiconductor laser chip to an optical disk as a forward beam without diffracting the beam, and diffracts a backward beam of the laser beam, which is a return beam of the forward beam that has been reflected by the optical disk, so that the backward beam is deflected from a direction directed toward the semiconductor laser chip part and further directed toward first, second photoreception parts. Therefore, optical loss on the forward way from the semiconductor laser chip to the optical disk can be reduced, and return light to the semiconductor laser chip can be suppressed, so that a high-power, high-sensitivity semiconductor laser device can be realized.
摘要翻译：在该半导体激光器件中，偏振全息图将来自半导体激光器芯片的出射光束作为前向光束传输到光盘而不衍射光束，并且衍射作为向前的返回光束的激光束的反向光束光束被反射的光束，使得反射光束从朝向半导体激光器芯片部分的方向偏转并进一步朝向第一，第二光接收部分。因此，可以减少从半导体激光器芯片向光盘的正向移动的光损耗，并且可以抑制向半导体激光器芯片的返回光，从而可以实现高功率，高灵敏度的半导体激光器件。

9. 发明申请

US20060018212A1 Focus error detecting device and optical pickup apparatus provided with the same 审中-公开
标题翻译：聚焦误差检测装置及具备该检测装置的光拾取装置
公开(公告)号：US20060018212A1
公开(公告)日：2006-01-26
申请号：US11176938
申请日：2005-07-08
申请人： Kazuhiro Tsuchida , Satoru Fukumoto , Katsushige Masui , Kazunori Matsubara , Keiji Sakai
发明人： Kazuhiro Tsuchida , Satoru Fukumoto , Katsushige Masui , Kazunori Matsubara , Keiji Sakai
IPC分类号： G11B7/00
CPC分类号： G11B7/131 , G11B7/0912 , G11B7/1353
摘要： A focus error detecting device which can realize stable focus servo without causing a deterioration in the quality of a signal, is provided. The focus error detecting device outputs a reflected light detection result by an optical recording medium to control a distance between an objective lens and the optical recording medium. With respect to the focus error detecting device, between the objective lens and two split light-receiving segments, is provided a hologram element for bending an optical path so that part of light reflected by the optical recording medium enters the two split light-receiving segments, and splitting a light beam of reflected light entering the two split light-receiving segments into a plurality of parts.
摘要翻译：提供一种能够实现稳定的聚焦伺服而不会导致信号质量下降的聚焦误差检测装置。聚焦误差检测装置通过光学记录介质输出反射光检测结果，以控制物镜和光记录介质之间的距离。关于聚焦误差检测装置，在物镜和两个分开的光接收部分之间设置有用于弯曲光路的全息元件，使得由光记录介质反射的光的一部分进入两个分开的光接收部分并且将进入两个分开的光接收段的反射光的光束分成多个部分。

10. 发明授权

US07184384B2 Optical pickup 有权
标题翻译：光学拾音
公开(公告)号：US07184384B2
公开(公告)日：2007-02-27
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： G11B7/00
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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