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31. 发明申请

US20080031119A1 Optical pickup and optical information recording apparatus using the same 有权
公开(公告)号：US20080031119A1
公开(公告)日：2008-02-07
申请号：US11905509
申请日：2007-10-02
申请人： Kunikazu Ohnishi , Tomoto Kawamura , Masayuki Inoue
发明人： Kunikazu Ohnishi , Tomoto Kawamura , Masayuki Inoue
IPC分类号： G11B7/135 , G11B7/00
CPC分类号： G11B7/1353 , G11B7/0903 , G11B7/0945 , G11B2007/0006
摘要： An optical pickup includes a diffraction grating partitioned into three areas, in which the phase of periodic grating groove structure in an area is successively shifted from that in the adjacent area by 90°. In the generation of a differential push-pull signal, an amplification factor K for sub push-pull signals is varied depending on the type of the optical disk. By such composition of the optical pickup, amplitude deterioration of the tracking error signal accompanying displacement of the object lens is reduced.

32. 发明申请

US20080031105A1 Optical pickup and optical information recording apparatus using the same 有权
公开(公告)号：US20080031105A1
公开(公告)日：2008-02-07
申请号：US11905533
申请日：2007-10-02
申请人： Kunikazu Ohnishi , Tomoto Kawamura , Masayuki Inoue
发明人： Kunikazu Ohnishi , Tomoto Kawamura , Masayuki Inoue
IPC分类号： G11B7/00
CPC分类号： G11B7/1353 , G11B7/0903 , G11B7/0945 , G11B2007/0006
摘要： An optical pickup includes a diffraction grating partitioned into three areas, in which the phase of periodic grating groove structure in an area is successively shifted from that in the adjacent area by 90°. In the generation of a differential push-pull signal, an amplification factor K for sub push-pull signals is varied depending on the type of the optical disk. By such composition of the optical pickup, amplitude deterioration of the tracking error signal accompanying displacement of the object lens is reduced.

33. 发明申请

US20060193217A1 Optical pickup and optical information reproducing device 审中-公开
标题翻译：光学拾取和光学信息再现装置
公开(公告)号：US20060193217A1
公开(公告)日：2006-08-31
申请号：US11302540
申请日：2005-12-14
申请人： Hiromitsu Mori , Kunikazu Ohnishi , Nobuyuki Maeda , Masayuki Inoue
发明人： Hiromitsu Mori , Kunikazu Ohnishi , Nobuyuki Maeda , Masayuki Inoue
IPC分类号： G11B7/00
CPC分类号： G11B7/13925 , G11B7/1263 , G11B7/1378 , G11B2007/0006 , G11B2007/0013 , G11B2007/13727
摘要： An optical pickup and an optical information recording and reproducing device in which spherical aberration correction control after a disc is loaded can be efficiently made in a short time. Before an information recording medium is loaded into a drive, an optical axis direction position of a concave lens is preset to a state so as to optimize a converging spot on a recording surface of a single-layered medium of as a first recording medium or a predetermined layer (first layer having a substrate thickness of 0.1 mm) of a medium having two or more layers to which the recording/reproduction is executed by a laser light source. After the information recording medium is loaded, if it is determined to be a second (third) recording medium to which the recording/reproduction is executed by a laser light source, setting of the optical axis direction position of the concave lens is changed.
摘要翻译：可以在短时间内有效地进行光盘拾取器和光盘信息记录和再现装置，其中装载光盘之后的球面像差校正控制。在将信息记录介质装载到驱动器中之前，将凹透镜的光轴方向位置预先设定为使作为第一记录介质的单层介质的记录面上的会聚点优化的状态具有由激光光源执行记录/再现的具有两层或多层的介质的预定层（具有0.1mm的基板厚度的第一层）。在信息记录介质被加载之后，如果确定是由激光源执行记录/再现的第二（第三）记录介质，则改变凹透镜的光轴方向位置的设置。

34. 发明授权

US06567355B2 Optical detector, optical pickup and optical information reproducing apparatus using optical pickup 有权
标题翻译：光学检测器，光学拾取器和使用光学拾取器的光学信息再现装置
公开(公告)号：US06567355B2
公开(公告)日：2003-05-20
申请号：US09726557
申请日：2000-12-01
申请人： Katsuhiko Izumi , Kunikazu Ohnishi , Kenichi Shimada , Masayuki Inoue , Shinji Fujita
发明人： Katsuhiko Izumi , Kunikazu Ohnishi , Kenichi Shimada , Masayuki Inoue , Shinji Fujita
IPC分类号： G11B700
CPC分类号： G11B7/131 , G11B7/0903 , G11B7/0909 , G11B7/0943 , G11B2007/0006
摘要： An optical pickup has a semiconductor laser having two laser sources of different wavelengths disposed in the same package, one diffraction grating and one optical detector. A plurality of light reception areas each having four divisional light reception planes of a -character shape are disposed at positions where light beams reflected from an optical disc are applied. A focus error signal is generated by an astigmatism method by using independently these light reception areas and a tracking error signal is generated by a differential phase detection method by using one or both the light reception areas.
摘要翻译：光拾取器具有设置在相同封装中的两个具有不同波长的激光源的半导体激光器，一个衍射光栅和一个光学检测器。多个光接收区域，每个光接收区域具有四个分开的光接收面，其具有 - 字符形状设置在从光盘反射的光束被施加的位置。通过独立地使用这些光接收区域通过散光法产生聚焦误差信号，并且通过使用光接收区域中的一个或两个，通过差分相位检测方法生成跟踪误差信号。

35. 发明授权

US07724626B2 Optical pickup and optical information recording apparatus using the same 有权
公开(公告)号：US07724626B2
公开(公告)日：2010-05-25
申请号：US11905533
申请日：2007-10-02
申请人： Kunikazu Ohnishi , Tomoto Kawamura , Masayuki Inoue
发明人： Kunikazu Ohnishi , Tomoto Kawamura , Masayuki Inoue
IPC分类号： G11B7/135
CPC分类号： G11B7/1353 , G11B7/0903 , G11B7/0945 , G11B2007/0006
摘要： An optical pickup includes a diffraction grating partitioned into three areas, in which the phase of periodic grating groove structure in an area is successively shifted from that in the adjacent area by 90°. In the generation of a differential push-pull signal, an amplification factor K for sub push-pull signals is varied depending on the type of the optical disk. By such composition of the optical pickup, amplitude deterioration of the tracking error signal accompanying displacement of the object lens is reduced.

36. 发明申请

US20100124161A1 OPTICAL PICKUP AND OPTICAL INFORMATION REPRODUCING DEVICE 审中-公开
标题翻译：光学拾取和光学信息再现设备
公开(公告)号：US20100124161A1
公开(公告)日：2010-05-20
申请号：US12693042
申请日：2010-01-25
申请人： Hiromitsu MORI , Kunikazu Ohnishi , Nobuyuki Maeda , Masayuki Inoue
发明人： Hiromitsu MORI , Kunikazu Ohnishi , Nobuyuki Maeda , Masayuki Inoue
IPC分类号： G11B7/00
CPC分类号： G11B7/13925 , G11B7/1263 , G11B7/1378 , G11B2007/0006 , G11B2007/0013 , G11B2007/13727
摘要： An optical pickup and an optical information recording and reproducing device in which spherical aberration correction control after a disc is loaded can be efficiently made in a short time. Before an information recording medium is loaded into a drive, an optical axis direction position of a concave lens is preset to a state so as to optimize a converging spot on a recording surface of a single-layered medium of as a first recording medium or a predetermined layer (first layer having a substrate thickness of 0.1 mm) of a medium having two or more layers to which the recording/reproduction is executed by a laser light source. After the information recording medium is loaded, if it is determined to be a second (third) recording medium to which the recording/reproduction is executed by a laser light source, setting of the optical axis direction position of the concave lens is changed.
摘要翻译：可以在短时间内有效地进行光盘拾取器和光盘信息记录和再现装置，其中装载光盘之后的球面像差校正控制。在将信息记录介质装载到驱动器中之前，将凹透镜的光轴方向位置预先设定为使作为第一记录介质的单层介质的记录面上的会聚点优化的状态具有由激光光源执行记录/再现的具有两层或多层的介质的预定层（具有0.1mm的基板厚度的第一层）。在信息记录介质被加载之后，如果确定是由激光源执行记录/再现的第二（第三）记录介质，则改变凹透镜的光轴方向位置的设置。

37. 发明申请

US20080031104A1 Optical pickup and optical information recording apparatus using the same 有权
公开(公告)号：US20080031104A1
公开(公告)日：2008-02-07
申请号：US11905529
申请日：2007-10-02
申请人： Kunikazu Ohnishi , Tomotro Kawamura , Masayuki Inoue
发明人： Kunikazu Ohnishi , Tomotro Kawamura , Masayuki Inoue
IPC分类号： G11B7/00
CPC分类号： G11B7/1353 , G11B7/0903 , G11B7/0945 , G11B2007/0006
摘要： An optical pickup includes a diffraction grating partitioned into three areas, in which the phase of periodic grating groove structure in an area is successively shifted from that in the adjacent area by 90°. In the generation of a differential push-pull signal, an amplification factor K for sub push-pull signals is varied depending on the type of the optical disk. By such composition of the optical pickup, amplitude deterioration of the tracking error signal accompanying displacement of the object lens is reduced.

38. 发明申请

US20070019530A1 Photodetector, diffraction grating, optical pickup and optical disc apparatus 有权
$Photodetector, diffraction grating, optical pickup and optical disc apparatus$
标题翻译：光电检测器，衍射光栅，光学拾取器和光盘装置
公开(公告)号：US20070019530A1
公开(公告)日：2007-01-25
申请号：US11369077
申请日：2006-03-07
申请人： Tomoto Kawamura , Kunikazu Ohnishi , Masayuki Inoue , Katsuhiko Izumi
发明人： Tomoto Kawamura , Kunikazu Ohnishi , Masayuki Inoue , Katsuhiko Izumi
IPC分类号： G11B7/00
CPC分类号： G11B7/131 , G11B7/1275 , G11B7/1353 , G11B2007/0006
摘要： The present invention provides a photodetector capable of generating highly accurate tracking and focusing error signals free of variations in light quantity caused by interference, in an optical pickup with a two-wavelength multilaser. The photodetector comprises first three light receiving areas arranged linearly to receive three light beams respectively resulting from splitting of a light beam emitted from a laser light source of a first wavelength and second three light receiving areas arranged linearly to receive three light beams respectively resulting from splitting of a light beam emitted from a laser light source of a second wavelength longer than the first wavelength. The distance between both-end light receiving areas out of the first three light receiving areas is longer than the distance between both-end light receiving areas out of the second three light receiving areas.
摘要翻译：本发明提供了一种能够在具有双波长多光盘的光学拾取器中产生高精度的跟踪和聚焦误差信号的光检测器，该误差信号不受干扰引起的光量的变化。光电检测器包括前三个光接收区域，线性地布置以接收三个光束，分别由从第一波长的激光光源发射的光束分裂，并且第二三个光线接收区域被线性地分配以接收分别由分裂产生的三个光束从比第一波长长的第二波长的激光光源发射的光束。在前三个光接收区域中的两端光接收区域之间的距离比第二三个光接收区域中的两端光接收区域之间的距离长。

39. 发明授权

US5751680A Optical disk drive 失效
标题翻译：光盘驱动器
公开(公告)号：US5751680A
公开(公告)日：1998-05-12
申请号：US762436
申请日：1996-12-09
申请人： Toshiaki Ishibashi , Kunikazu Ohnishi , Masayuki Inoue , Yoshio Suzuki
发明人： Toshiaki Ishibashi , Kunikazu Ohnishi , Masayuki Inoue , Yoshio Suzuki
IPC分类号： G11B7/09 , G11B7/095 , G11B7/125 , G11B7/135 , H04B1/20
CPC分类号： G11B7/0956
摘要： Concerning a tilt detecting optical pickup in an optical disk playback device, a highly precise tilt error signal can be obtained by a simple structure. As a structure for achieving this, there are provided a diffraction grating, on which a grating groove pattern has been engraved, capable of adding coma aberration components to + and - primary diffracted light on an optical path between a laser diode, which becomes a playback light source, and an optical disk, and a light-receiving element capable of receiving the diffracted light. The output from a signal processing circuit capable of calculating a difference between each light receiving strength becomes a tilt error signal. By deforming the aforesaid grating groove pattern, the layout of the coma aberration components can be changed. Also, a tilt error signal can be obtained from a difference in bit error numbers in playback signals from diffracted light having coma aberration. Addition of coma aberration components to the diffracted light makes it possible to easily improve the sensitivity of a tilt error signal to the tilt angle.
摘要翻译：关于光盘重放装置中的倾斜检测光学拾取器，可以通过简单的结构获得高精度的倾斜误差信号。作为实现这一点的结构，提供了一种衍射光栅，其上刻有格栅槽图案，能够在成为回放的激光二极管之间的光路上将偏光成分加到+和 - 次衍射光上光源和光盘，以及能够接收衍射光的光接收元件。来自能够计算每个光接收强度之差的信号处理电路的输出成为倾斜误差信号。通过使上述格栅凹槽图案变形，可以改变彗形像差分量的布局。此外，可以从具有彗形像差的衍射光的重放信号中的位错误数的差异获得倾斜误差信号。向衍射光添加彗形像差成分可以容易地提高倾斜误差信号对倾斜角的灵敏度。

40. 发明申请

US20130003022A1 SCAN-TYPE IMAGE DISPLAY DEVICE AND SCAN-TYPE PROJECTION DEVICE 审中-公开
标题翻译：扫描型图像显示装置和扫描型投影装置
公开(公告)号：US20130003022A1
公开(公告)日：2013-01-03
申请号：US13532819
申请日：2012-06-26
申请人： Teppei Tanaka , Takeshi Nakao , Masato Sugiyama , Michio Hatagi , Tomoto Kawamura , Hiromi Kita , Kunikazu Ohnishi
发明人： Teppei Tanaka , Takeshi Nakao , Masato Sugiyama , Michio Hatagi , Tomoto Kawamura , Hiromi Kita , Kunikazu Ohnishi
IPC分类号： G03B21/14 , G02B26/10
CPC分类号： G02B26/108 , H04N9/3129 , H04N9/3167 , H04N9/3173
摘要： A polarizing prism is shaped in the form of a hexahedron. A polarizing beam splitter film (PBS film) is arranged approximately in a diagonal direction of the hexahedron. The polarizing prism holds a relationship of A
摘要翻译：偏振棱镜成形为六面体形式。偏振分束膜（PBS膜）大致沿着六面体的对角线方向排列。当偏光棱镜在光束到屏幕的出射方向（Y方向）上的尺寸为A时，其与来自光的光束的入射方向（X方向）的尺寸保持A

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