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1.发明申请Focus error detecting device and optical pickup apparatus provided with the same 审中-公开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
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。
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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
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）。
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3.发明授权Optical pickup device using polarizing hologram element and hologram laser therefor 失效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。
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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
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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
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公开(公告)号：US07136409B2
公开(公告)日：2006-11-14
申请号：US10812317
申请日：2004-03-30
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。
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公开(公告)号：US06983005B2
公开(公告)日：2006-01-03
申请号：US10056255
申请日：2002-01-24
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.
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公开(公告)号：US06847665B2
公开(公告)日：2005-01-25
申请号：US10101696
申请日：2002-03-21
申请人： Shigehiro Yamada , Kazuhiro Tsuchida , Katsushige Masui , Toshiya Nagahama , Takahide Ishiguro , Naotaka Ohtsuka
发明人： Shigehiro Yamada , Kazuhiro Tsuchida , Katsushige Masui , Toshiya Nagahama , Takahide Ishiguro , Naotaka Ohtsuka
CPC分类号： H01S5/02248 , H01L2224/48091 , H01L2224/48137 , H01S5/02276 , H01S5/042 , H01S5/0683 , H01L2924/00014
摘要： Not only a semiconductor laser element and a photodetector but also a capacitor connected to the photodetector is housed in a package to thereby reduce the distance from the capacitor to the photodetector so that power source noise is efficiently suppressed by the capacitor and a power source noise suppression effect is improved.
摘要翻译： 不仅半导体激光器元件和光电检测器，而且连接到光电检测器的电容器也被封装在封装中，从而减小了从电容器到光电检测器的距离，使得电源噪声被电容器有效地抑制，并且电源噪声抑制 效果提高。
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公开(公告)号：US20070053272A1
公开(公告)日：2007-03-08
申请号：US11511743
申请日：2006-08-28
申请人： Yukio Watanabe , Tetsuo Ueyama , Osamu Miyazaki , Kazunori Matsubara , Shinzoh Murakami , Kazuhiro Tsuchida
发明人： Yukio Watanabe , Tetsuo Ueyama , Osamu Miyazaki , Kazunori Matsubara , Shinzoh Murakami , Kazuhiro Tsuchida
IPC分类号： G11B7/135
CPC分类号： G11B7/0903 , G11B7/0916 , G11B7/1353
摘要： An optical pickup includes a hologram element. The hologram element is provided with a hologram pattern including a splitting section for focus which splits light used for the detection of an FES and a splitting section for tracking which splits light used for the detection of a TES. The splitting section for tracking is formed in a region excluding a region interposed between a first virtual straight line and a second virtual straight line. The first virtual straight line is drawn on the hologram element in parallel to an X direction and passes through an optical axis of reflected light entering the hologram element in a state where the objective lens is in a neutral position, and the second virtual straight line is drawn in parallel to the first virtual straight line, while being spaced at a distance d from the first virtual straight line.
摘要翻译： 光拾取器包括全息元件。 全息元件设置有包括用于聚焦的分割部分的全息图图案，其分割用于检测FES的光和用于跟踪用于检测TES的分离光的分割部分。 用于跟踪的分割部分形成在除了插入在第一虚拟直线和第二虚拟直线之间的区域的区域中。 第一虚拟直线在全息元件上平行于X方向绘制，并且在物镜处于中立位置的状态下穿过进入全息元件的反射光的光轴，第二虚拟直线为 平行于第一虚拟直线绘制，同时与第一虚拟直线间隔开距离d。
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公开(公告)号：US07684306B2
公开(公告)日：2010-03-23
申请号：US11496814
申请日：2006-07-31
申请人： Kazunori Matsubara , Shinzoh Murakami , Tetsuo Ueyama , Kazuhiro Tsuchida , Yukio Watanabe , Osamu Miyazaki
发明人： Kazunori Matsubara , Shinzoh Murakami , Tetsuo Ueyama , Kazuhiro Tsuchida , Yukio Watanabe , Osamu Miyazaki
IPC分类号： G11B7/00
CPC分类号： G11B7/1353
摘要： There is provided an optical pickup apparatus that can obtain a stable servo signal by reducing stray light generated by diffraction in a recording layer other than a recording layer on which light is condensed. A hologram element provided in an optical pickup apparatus for recording information onto a recording medium and/or reproducing information on the recording medium by use of light includes fourth and fifth divisions where at least first-order diffracted light among diffracted light beams obtained by reflection and diffraction on a recording layer other than a light-condensed recording layer on which light is condensed by an objective lens so as not to be directed toward first and second light-receiving elements for detecting focus position information and third to eighth light-receiving elements for detecting track position information.
摘要翻译： 提供了一种光拾取装置，其可以通过减少除了聚光的记录层之外的记录层中的衍射产生的杂散光，从而获得稳定的伺服信号。 提供在用于通过使用光将信息记录在记录介质上和/或在记录介质上再现信息的光学拾取装置中的全息元件包括第四和第五分割，其中至少一级衍射光通过反射和 除了聚光记录层之外的记录层上的衍射，其中光被物镜聚光，以便不被指向用于检测聚焦位置信息的第一和第二光接收元件和用于检测聚焦位置信息的第三至第八光接收元件 检测轨迹位置信息。
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