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1. 发明申请

US20120002533A1 OPTICAL PICKUP DEVICE 失效
标题翻译：光学拾取器件
公开(公告)号：US20120002533A1
公开(公告)日：2012-01-05
申请号：US13174239
申请日：2011-06-30
申请人： Kenji Nagatomi , Shinsei Kasahara , Shigeharu Shirane , Masayuki Yoshie
发明人： Kenji Nagatomi , Shinsei Kasahara , Shigeharu Shirane , Masayuki Yoshie
IPC分类号： G11B7/135
CPC分类号： G11B7/1353 , G11B7/131 , G11B7/1374 , G11B7/1378 , G11B2007/0006 , G11B2007/0013
摘要： A spectral element separates first laser light in such a manner that an area including only signal light as reflected first laser light is formed on a photodetector. The photodetector is provided with a first sensor group which is disposed at an irradiation position of signal light of the separated first laser light, and a second sensor group which receives zero-th order diffraction light of a main beam and two sub beams of second laser light that has been transmitted through the spectral element. The second sensor group includes a four-divided sensor which receives the main beam. The four-divided sensor is disposed in an area surrounded by the first sensor group. Zero-th order diffraction light of the first laser light that has been transmitted through the spectral element is irradiated onto the four-divided sensor.
摘要翻译：光谱元件以这样的方式分离第一激光，即在光电检测器上形成仅包括作为反射的第一激光的信号光的区域。光电检测器设置有第一传感器组，其设置在分离的第一激光的信号光的照射位置处，以及第二传感器组，其接收主光束的零级衍射光和第二激光的两个子光束通过光谱元素传输的光。第二传感器组包括接收主光束的四分割传感器。四分割传感器设置在由第一传感器组包围的区域中。通过光谱元件透射的第一激光的零级衍射光被照射到四分割传感器上。

2. 发明申请

US20120026858A1 OPTICAL PICKUP DEVICE 失效
标题翻译：光学拾取器件
公开(公告)号：US20120026858A1
公开(公告)日：2012-02-02
申请号：US13191794
申请日：2011-07-27
申请人： Kenji Nagatomi , Shinsei Kasahara , Shigeharu Shirane , Masayuki Yoshie
发明人： Kenji Nagatomi , Shinsei Kasahara , Shigeharu Shirane , Masayuki Yoshie
IPC分类号： G11B7/135
CPC分类号： G11B7/131 , G11B7/1353 , G11B7/1374 , G11B7/1378 , G11B2007/0006 , G11B2007/0013
摘要： An optical pickup device has an astigmatism element which imparts astigmatism to reflected light of laser light reflected on a recording layer, and a spectral element into which the reflected light is entered, and which separates the reflected light. The spectral element is divided into four third areas by a first area having a certain width and formed along a straight line in parallel to a first direction, and by a second area having a certain width and formed along a straight line in parallel to a second direction. The spectral element is configured to guide the reflected light passing through the four third areas to respective corresponding sensors on a photodetector while making propagating directions of the reflected light different from each other, and to avoid guiding the reflected light entered into the first area and into the second area to the sensors.
摘要翻译：一种光学拾取装置具有散光元件，其对记录层上反射的激光的反射光和向反射光入射的光谱元件赋予散光，并分离反射光。光谱元件通过具有一定宽度的第一区域被分成四个第三区域，并且沿着与第一方向平行的直线形成，并且具有一定宽度的第二区域，并且沿着与第二区域平行的直线形成方向。光谱元件被配置为在使反射光的传播方向彼此不同的同时将通过四个第三区域的反射光引导到光电检测器上的各个对应的传感器，并且避免引导入射到第一区域中的反射光并进入传感器的第二个区域。

3. 发明申请

US20120026857A1 OPTICAL PICKUP DEVICE 失效
标题翻译：光学拾取器件
公开(公告)号：US20120026857A1
公开(公告)日：2012-02-02
申请号：US13186833
申请日：2011-07-20
申请人： Kenji Nagatomi , Shinsei Kasahara , Shigeharu Shirane , Masayuki Yoshie
发明人： Kenji Nagatomi , Shinsei Kasahara , Shigeharu Shirane , Masayuki Yoshie
IPC分类号： G11B7/135
CPC分类号： G11B7/1378 , G11B7/131 , G11B7/1353 , G11B7/1374 , G11B2007/0006 , G11B2007/0013
摘要： An optical pickup device has an astigmatism element which imparts astigmatism to reflected light of laser light reflected on a recording layer, and a spectral element into which the reflected light is entered, and which separates the reflected light. The spectral element is divided into six second areas by a straight line in parallel to a first direction, a straight line in parallel to a second direction, and a first area having a predetermined width and formed along a straight line in parallel to a third direction inclined from the first direction by 45 degrees. The spectral element is configured to guide the reflected light passing through the six second areas to corresponding sensors on a photodetector while making propagating directions of the reflected light different from each other, and to avoid guiding the reflected light entered into the first area to the sensors.
摘要翻译：一种光学拾取装置具有散光元件，其对记录层上反射的激光的反射光和向反射光入射的光谱元件赋予散光，并分离反射光。光谱元件通过与第一方向平行的直线分成六个第二区域，平行于第二方向的直线和具有预定宽度并沿着与第三方向平行的直线形成的第一区域从第一个方向倾斜45度。光谱元件被配置为将反射光通过六个第二区域的反射光引导到光电检测器上的相应传感器，同时使反射光的传播方向彼此不同，并且避免将进入第一区域的反射光引导到传感器。

4. 发明授权

US08358571B2 Optical pickup device 失效
标题翻译：光学拾取装置
公开(公告)号：US08358571B2
公开(公告)日：2013-01-22
申请号：US13191794
申请日：2011-07-27
申请人： Kenji Nagatomi , Shinsei Kasahara , Shigeharu Shirane , Masayuki Yoshie
发明人： Kenji Nagatomi , Shinsei Kasahara , Shigeharu Shirane , Masayuki Yoshie
IPC分类号： G11B7/00
CPC分类号： G11B7/131 , G11B7/1353 , G11B7/1374 , G11B7/1378 , G11B2007/0006 , G11B2007/0013
摘要： An optical pickup device has an astigmatism element which imparts astigmatism to reflected light of laser light reflected on a recording layer, and a spectral element into which the reflected light is entered, and which separates the reflected light. The spectral element is divided into four third areas by a first area having a certain width and formed along a straight line in parallel to a first direction, and by a second area having a certain width and formed along a straight line in parallel to a second direction. The spectral element is configured to guide the reflected light passing through the four third areas to respective corresponding sensors on a photodetector while making propagating directions of the reflected light different from each other, and to avoid guiding the reflected light entered into the first area and into the second area to the sensors.
摘要翻译：一种光学拾取装置具有散光元件，其对记录层上反射的激光的反射光和向反射光入射的光谱元件赋予散光，并分离反射光。光谱元件被具有一定宽度的第一区域分成四个第三区域，并且沿着与第一方向平行的直线形成，并且具有一定宽度的第二区域，并且沿着与第二区域平行的直线形成方向。光谱元件被配置为在使反射光的传播方向彼此不同的同时将通过四个第三区域的反射光引导到光电检测器上的各个对应的传感器，并且避免引导入射到第一区域中的反射光并进入传感器的第二个区域。

5. 发明授权

US08331211B2 Optical pickup device 失效
标题翻译：光学拾取装置
公开(公告)号：US08331211B2
公开(公告)日：2012-12-11
申请号：US13186833
申请日：2011-07-20
申请人： Kenji Nagatomi , Shinsei Kasahara , Shigeharu Shirane , Masayuki Yoshie
发明人： Kenji Nagatomi , Shinsei Kasahara , Shigeharu Shirane , Masayuki Yoshie
IPC分类号： G11B7/00
CPC分类号： G11B7/1378 , G11B7/131 , G11B7/1353 , G11B7/1374 , G11B2007/0006 , G11B2007/0013
摘要： An optical pickup device has an astigmatism element which imparts astigmatism to reflected light of laser light reflected on a recording layer, and a spectral element into which the reflected light is entered, and which separates the reflected light. The spectral element is divided into six second areas by a straight line in parallel to a first direction, a straight line in parallel to a second direction, and a first area having a predetermined width and formed along a straight line in parallel to a third direction inclined from the first direction by 45 degrees. The spectral element is configured to guide the reflected light passing through the six second areas to corresponding sensors on a photodetector while making propagating directions of the reflected light different from each other, and to avoid guiding the reflected light entered into the first area to the sensors.
摘要翻译：一种光学拾取装置具有散光元件，其对记录层上反射的激光的反射光和向反射光入射的光谱元件赋予散光，并分离反射光。光谱元件通过与第一方向平行的直线分成六个第二区域，平行于第二方向的直线和具有预定宽度并沿着与第三方向平行的直线形成的第一区域从第一个方向倾斜45度。光谱元件被配置为将反射光通过六个第二区域的反射光引导到光电检测器上的相应传感器，同时使反射光的传播方向彼此不同，并且避免将进入第一区域的反射光引导到传感器。

6. 发明授权

US08325580B2 Optical pickup device 失效
标题翻译：光学拾取装置
公开(公告)号：US08325580B2
公开(公告)日：2012-12-04
申请号：US13174239
申请日：2011-06-30
申请人： Kenji Nagatomi , Shinsei Kasahara , Shigeharu Shirane , Masayuki Yoshie
发明人： Kenji Nagatomi , Shinsei Kasahara , Shigeharu Shirane , Masayuki Yoshie
IPC分类号： G11B7/00
CPC分类号： G11B7/1353 , G11B7/131 , G11B7/1374 , G11B7/1378 , G11B2007/0006 , G11B2007/0013
摘要： A spectral element separates first laser light in such a manner that an area including only signal light as reflected first laser light is formed on a photodetector. The photodetector is provided with a first sensor group which is disposed at an irradiation position of signal light of the separated first laser light, and a second sensor group which receives zero-th order diffraction light of a main beam and two sub beams of second laser light that has been transmitted through the spectral element. The second sensor group includes a four-divided sensor which receives the main beam. The four-divided sensor is disposed in an area surrounded by the first sensor group. Zero-th order diffraction light of the first laser light that has been transmitted through the spectral element is irradiated onto the four-divided sensor.
摘要翻译：光谱元件以这样的方式分离第一激光，即在光电检测器上形成仅包括作为反射的第一激光的信号光的区域。光电检测器设置有第一传感器组，其设置在分离的第一激光的信号光的照射位置处，以及第二传感器组，其接收主光束的零级衍射光和第二激光的两个子光束通过光谱元素传输的光。第二传感器组包括接收主光束的四分割传感器。四分割传感器设置在由第一传感器组包围的区域中。通过光谱元件透射的第一激光的零级衍射光被照射到四分割传感器上。

7. 发明授权

US08279723B2 Recording medium, optical device, and recording and reproducing apparatus 有权
标题翻译：记录介质，光学拾取装置和记录和再现装置
公开(公告)号：US08279723B2
公开(公告)日：2012-10-02
申请号：US12541668
申请日：2009-08-14
申请人： Morio Nakatani , Kenji Nagatomi , Yoshiyuki Matsumura , Seiichiro Takahashi
发明人： Morio Nakatani , Kenji Nagatomi , Yoshiyuki Matsumura , Seiichiro Takahashi
IPC分类号： G11B7/00
CPC分类号： G11B7/24038 , B82Y10/00 , G11B7/00736 , G11B7/00745 , G11B7/0938 , G11B7/1378 , G11B2007/0013
摘要： A recording medium includes at least one recording layer on which information is recorded by multi-photon absorption, and a servo layer disposed in a laminated direction with respect to the recording layer and having a track for guiding a beam spot of laser light having a first wavelength and a beam spot of laser light having a second wavelength along a scanning trajectory. The servo layer and the at least one recording layer constitute a set of layers, and a plurality of sets of layers is formed in the laminated direction. The servo layer is made of a material having a high reflectance with respect to laser light having a third wavelength for generating a servo signal, and low reflectances with respect to the laser light having the first wavelength and the laser light having the second wavelength.
摘要翻译：记录介质包括至少一个记录层，其上通过多光子吸收记录信息;以及伺服层，其相对于记录层设置在层叠方向上，并且具有用于引导具有第一波长和沿着扫描轨迹具有第二波长的激光束。伺服层和至少一个记录层构成一组层，并且在层叠方向上形成多组层。伺服层由相对于具有第三波长的激光具有高反射率的材料制成，用于产生伺服信号，以及相对于具有第一波长的激光和具有第二波长的激光的低反射率。

8. 发明授权

US07903507B2 Optical pickup device and method of laying out the same 失效
标题翻译：光拾取装置及其布置方法
公开(公告)号：US07903507B2
公开(公告)日：2011-03-08
申请号：US11642730
申请日：2006-12-21
申请人： Kenji Nagatomi , Seiji Kajiyama
发明人： Kenji Nagatomi , Seiji Kajiyama
IPC分类号： G11B7/00 , G11B1/135
CPC分类号： G11B7/13 , G11B7/0935 , G11B7/1374 , G11B2007/0006
摘要： An optical pickup device is provided, in which, supposing that an angle formed by the meeting of a straight line connecting a center of an optical disk and an accessing position of an HD objective lens with a diameter L of the optical disk is a track angle θ1, an oscillation angle α of an optical system including an HD laser, an HD half mirror, and an HD sensor, and a distance z of the HD objective lens are set so as to satisfy α−(θ1max+θ1min)/2=±45°, where θ1max is the track angle θ1 when the HD objective lens is positioned at an innermost circumference of the optical disk, and θ1min is the track angle θ1 when the HD objective lens is positioned at an outermost circumference of the optical disk.
摘要翻译：提供了一种光学拾取装置，其中，假设由连接光盘中心的直线与具有光盘直径L的HD物镜的访问位置的会合形成的角度是轨道角度＆thetas; 1，包括HD激光器，HD半反射镜和HD传感器的光学系统的振荡角α和HD物镜的距离z被设定为满足α - （＆eta; 1max +＆Thetas ; 1min）/ 2 =±45°，其中＆amp; thetas; 1max是轨道角度＆amp; 1;当HD物镜位于光盘的最内周边时，1min是轨道角度; 1 HD物镜位于光盘的最外周。

9. 发明授权

US07852735B2 Optical pickup device 失效
标题翻译：光学拾取装置
公开(公告)号：US07852735B2
公开(公告)日：2010-12-14
申请号：US11943251
申请日：2007-11-20
申请人： Kazushi Mori , Katsutoshi Hibino , Kenji Asano , Kenji Nagatomi , Shogo Suzuki , Naoyuki Takagi
发明人： Kazushi Mori , Katsutoshi Hibino , Kenji Asano , Kenji Nagatomi , Shogo Suzuki , Naoyuki Takagi
IPC分类号： G11B7/135
CPC分类号： G11B7/131 , G11B7/1353
摘要： A diffraction element is disposed between a beam branching element (such as a beam splitter) and a photodetector. The diffraction element further segment an interference fringe introduced into stray light by a diffraction grating which divides a laser beam emitted from a laser beam source into a main beam and two sub-beams.
摘要翻译：衍射元件设置在光束分支元件（例如光束分离器）和光电检测器之间。衍射元件还通过将从激光束源发射的激光束分成主光束和两个子光束的衍射光栅进一步分割引入到杂散光中的干涉条纹。

10. 发明申请

US20100265810A1 OPTICAL PICKUP DEVICE AND OPTICAL DISC DEVICE 失效
标题翻译：光学拾取装置和光盘装置
公开(公告)号：US20100265810A1
公开(公告)日：2010-10-21
申请号：US12763565
申请日：2010-04-20
申请人： Kenji Nagatomi
发明人： Kenji Nagatomi
IPC分类号： G11B7/00
CPC分类号： G11B7/0909 , G11B2007/0013
摘要： An optical pickup device imparts different astigmatisms from each other to light fluxes in four light flux areas A through D formed around an optical axis of laser light, out of the laser light reflected on a disc. The optical pickup device also changes the propagating directions of the light fluxes in the light flux areas A through D to separate the light fluxes in the light flux areas A through D from each other. A signal light area where only signal light exists is defined on a detection surface of a photodetector. Sensing portions are arranged at a position corresponding to the signal light area. Accordingly, only the signal light is received by the sensing portions, thereby suppressing deterioration of a detection signal resulting from stray light.
摘要翻译：光拾取装置将不同的散光彼此分配给在光盘上反射的激光中形成在激光的光轴周围的四个光通量区域A至D中的光通量。光拾取装置还改变光束区域A至D中的光束的传播方向，以将光通量区域A至D中的光束彼此分离。仅在信号光存在的信号光区域被限定在光检测器的检测表面上。感测部分布置在对应于信号光区域的位置处。因此，只有信号光被感测部分接收，从而抑制由杂散光引起的检测信号的劣化。

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