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1. 发明授权

US06992953B2 Tracking servo apparatus of optical information recording and reproducing apparatus 失效
标题翻译：光信息记录和再现装置的跟踪伺服装置
公开(公告)号：US06992953B2
公开(公告)日：2006-01-31
申请号：US09813898
申请日：2001-03-22
申请人： Mitsuru Sato , Junichi Furukawa , Kazuo Takahashi , Takanori Maeda , Hiroshi Nishiwaki , Takayuki Nomoto , Ikuya Kikuchi
发明人： Mitsuru Sato , Junichi Furukawa , Kazuo Takahashi , Takanori Maeda , Hiroshi Nishiwaki , Takayuki Nomoto , Ikuya Kikuchi
IPC分类号： G11B7/095
CPC分类号： G11B7/1353 , G11B7/0901 , G11B7/0912 , G11B7/094 , G11B7/0941 , G11B7/0943 , G11B7/1381
摘要： A tracking servo apparatus in which reflection light obtained when a laser beam is irradiated onto a recording surface of an optical disc is photoelectrically converted, thereby obtaining a photoelectric conversion signal, a tracking error signal showing a deviation amount of an irradiating position of said laser beam for a track in a disc radial direction on the recording surface is generated by the photoelectric conversion signal, a spherical aberration occurring in an optical system is detected, a level of the tracking error signal is corrected on the basis of the detection result, and the irradiating position of the laser beam is moved in the disc radial direction in accordance with the level-corrected tracking error signal.
摘要翻译：一种跟踪伺服装置，其中将激光束照射到光盘的记录表面上时获得的反射光被光电转换，从而获得光电转换信号，表示所述激光束的照射位置的偏差量的跟踪误差信号通过光电转换信号产生在记录表面上的磁盘径向方向上的轨迹，检测出在光学系统中发生的球面像差，根据检测结果校正跟踪误差信号的电平，并且根据电平校正的跟踪误差信号，激光束的照射位置沿盘径向移动。

2. 发明授权

US06885616B2 Optical pickup apparatus and information recording and/or reproducing apparatus 失效
标题翻译：光学拾取装置和信息记录和/或再现装置
公开(公告)号：US06885616B2
公开(公告)日：2005-04-26
申请号：US09765306
申请日：2001-01-22
申请人： Ikuya Kikuchi , Takanori Maeda , Mitsuru Sato
发明人： Ikuya Kikuchi , Takanori Maeda , Mitsuru Sato
IPC分类号： G11B7/00 , G11B7/09 , G11B7/125 , G11B7/135
CPC分类号： G11B7/1353 , G11B7/0908 , G11B7/0943 , G11B7/1369 , G11B7/1378 , G11B7/1381 , G11B7/13925 , G11B2007/0006
摘要： A phase device for providing a phase difference between an inner radius portion and an outer radius portion of a light beam which is emitted from a light source is provided in an optical path between the light source of an optical pickup apparatus and an objective lens. The light beam to which the phase difference has been provided is converged by the objective lens and irradiated to an optical disc. An interference of an inner radius portion and an outer radius portion of the returning light beam caused when the light beam is diffracted by the optical disc with ±1 primary diffracted light caused by the diffraction is suppressed. Therefore, an intensity fluctuation of the returning light beam caused by the interference is suppressed. A spherical aberration error showing a thickness error of the optical disc and a focusing error having a high linearity can be detected with high precision on the basis of the returning light. A numerical aperture of the objective lens, consequently, can be increased, high density information recording and information reproduction can be performed, and further, an optical pickup apparatus and an information recording and/or reproducing apparatus each having compatibility are realized.
摘要翻译：在光拾取装置的光源和物镜之间的光路中设置用于提供从光源发射的光束的内半径部分和外半径部分之间的相位差的相位装置。已经提供了相位差的光束被物镜会聚并照射到光盘。抑制由衍射引起的±1次衍射光使光束被光盘衍射时引起的返回光束的内径部和外径部的干涉。因此，抑制由干涉引起的返回光束的强度波动。可以基于返回光以高精度检测出表示光盘的厚度误差的球面像差误差和高线性度的聚焦误差。因此，可以增加物镜的数值孔径，可以执行高密度信息记录和信息再现，并且还实现了具有兼容性的光学拾取装置和信息记录和/或再现装置。

3. 发明授权

US06804185B2 Optical pickup and information recording and/or reproducing apparatus including the same 失效
标题翻译：光学拾取器和包括该拾取器的信息记录和/或再现装置
公开(公告)号：US06804185B2
公开(公告)日：2004-10-12
申请号：US09738949
申请日：2000-12-18
申请人： Ikuya Kikuchi , Takanori Maeda , Mitsuru Sato , Masayuki Iwasaki
发明人： Ikuya Kikuchi , Takanori Maeda , Mitsuru Sato , Masayuki Iwasaki
IPC分类号： G11B700
CPC分类号： G11B7/1381 , G11B7/1369
摘要： A variable optical unit is provided with at least two phase-shift regions for providing light with phase differences. Phase-shift amount of the phase-shift region is adjusted by the applied voltage in accordance with birefringence of an information medium. A light beam emitted from a light source is incident on the variable optical unit through a collimator lens and a beam splitter. The light beam is polarized in accordance with the aforementioned phase-shift amount of the variable optical unit and converged by an objective lens to radiate the information medium. The reflected light polarized due to the effect of the birefringence of the information medium is polarized again according to the phase-shift amount of the variable optical unit. The reflected light is thereby polarized in the direction in which the beam splitter can reflect the reflected light and then the reflected light reflected by the beam splitter is detected by the condenser lens and an optical detector.
摘要翻译：可变光学单元设置有至少两个相移区域，用于提供具有相位差的光。根据信息介质的双折射，通过施加的电压来调整相移区域的相移量。从光源发射的光束通过准直透镜和分束器入射在可变光学单元上。光束根据上述可变光学单元的相移量被偏振，并由物镜会聚以辐射信息介质。由于信息介质的双折射效应而偏振的反射光根据可变光学单元的相移量再次被极化。因此，反射光在分束器能够反射反射光的方向上偏振，然后由聚光透镜和光学检测器检测由分束器反射的反射光。

4. 发明申请

US20150070770A1 OPTICAL ELEMENT, HEAD-UP DISPLAY AND LIGHT SOURCE UNIT 审中-公开
标题翻译：光学元件，顶部显示器和光源单元
公开(公告)号：US20150070770A1
公开(公告)日：2015-03-12
申请号：US14391706
申请日：2012-04-12
申请人： Takayuki Nomoto , Ikuya Kikuchi
发明人： Takayuki Nomoto , Ikuya Kikuchi
IPC分类号： G02B3/00 , G02B27/01
CPC分类号： G02B3/0043 , G02B3/0006 , G02B3/0056 , G02B27/0101 , G02B2027/0118
摘要： An optical element includes a microlens array on which plural microlenses are arranged. The microlens array includes plural areas whose microlenses have different curvature radii per area. The plural areas are configured so that the farther the area exists from the center of the microlens array, the smaller the curvature radius of the microlenses arranged on the area is.
摘要翻译：光学元件包括其上布置有多个微透镜的微透镜阵列。微透镜阵列包括多个区域，其微透镜每个面积具有不同的曲率半径。多个区域被配置为使得该区域从微透镜阵列的中心越远，该区域上布置的微透镜的曲率半径越小。

5. 发明申请

US20120218641A1 OPTICAL ELEMENT, HEAD-UP DISPLAY AND METHOD FOR PRODUCING OPTICAL ELEMENT 有权
标题翻译：光学元件，顶部显示器和用于生产光学元件的方法
公开(公告)号：US20120218641A1
公开(公告)日：2012-08-30
申请号：US13380366
申请日：2011-02-28
申请人： Ikuya Kikuchi , Takayuki Nomoto
发明人： Ikuya Kikuchi , Takayuki Nomoto
IPC分类号： G02B27/10 , B23P11/00 , G02B27/14
CPC分类号： G02B3/0056 , G02B3/0068 , G02B27/0101 , G02B27/48 , Y10T29/49826
摘要： An optical element includes first and second microlens array units on which microlenses are arranged. The microlenses are formed by lens contour having a polygonal shape in a plan view. The first and second microlens array units are arranged opposite to each other at a position where a distance between the first and second microlens array units is at least longer than a focal distance of the microlens, and are formed so that a direction of vertices of the lens contour of the microlens arranged on the first microlens array unit is different from a direction of vertices of the lens contour of the microlens arranged on the second microlens array unit. According to the above optical element, it is possible to appropriately suppress an influence of shift of the position between the first and second microlens array units, and it becomes possible to produce the optical element with ease.
摘要翻译：光学元件包括布置有微透镜的第一和第二微透镜阵列单元。微透镜由平面图中具有多边形形状的透镜轮廓形成。第一微透镜阵列单元和第二微透镜阵列单元在第一和第二微透镜阵列单元之间的距离至少长于微透镜的焦距的位置处彼此相对布置，并且形成为使得第一和第二微透镜阵列单元的顶点的方向布置在第一微透镜阵列单元上的微透镜的透镜轮廓不同于布置在第二微透镜阵列单元上的微透镜的透镜轮廓的顶点的方向。根据上述光学元件，可以适当地抑制第一和第二微透镜阵列单元之间的位置偏移的影响，并且可以容易地制造光学元件。

6. 发明授权

US09042021B2 Optical element, head-up display and light source unit 有权
标题翻译：光学元件，平视显示器和光源单元
公开(公告)号：US09042021B2
公开(公告)日：2015-05-26
申请号：US14111987
申请日：2011-04-14
申请人： Takayuki Nomoto , Ikuya Kikuchi
发明人： Takayuki Nomoto , Ikuya Kikuchi
IPC分类号： G02B27/14 , G02B27/10 , G02B3/00 , G02B27/01 , G02B27/48
CPC分类号： G02B3/005 , G02B3/0006 , G02B3/0056 , G02B27/0101 , G02B27/48 , G02B2027/0118
摘要： An optical element includes a first microlens array unit and a second microlens array unit in each of which a plurality of microlenses are arranged. The first and second microlens array units are arranged opposite to each other with a distance which is longer than a focal length of the microlenses arranged in the first microlens array unit. The first microlens unit is arranged on a light-incident side with respect to the second microlens array unit. The interval between the microlenses arranged in the second microlens array unit is narrower than the interval between the microlenses arranged in the first microlens array unit. The optical element can appropriately suppress the occurrence of excessive pixel bright spot.
摘要翻译：光学元件包括第一微透镜阵列单元和第二微透镜阵列单元，每个阵列单元布置有多个微透镜。第一和第二微透镜阵列单元彼此相对布置的距离比设置在第一微透镜阵列单元中的微透镜的焦距长。第一微透镜单元相对于第二微透镜阵列单元布置在光入射侧。布置在第二微透镜阵列单元中的微透镜之间的间隔比布置在第一微透镜阵列单元中的微透镜之间的间隔窄。光学元件可以适当地抑制过量像素亮点的发生。

7. 发明授权

US08422137B2 Optical element, head-up display and method for producing optical element 有权
标题翻译：光学元件，平视显示器和用于制造光学元件的方法
公开(公告)号：US08422137B2
公开(公告)日：2013-04-16
申请号：US13380366
申请日：2011-02-28
申请人： Ikuya Kikuchi , Takayuki Nomoto
发明人： Ikuya Kikuchi , Takayuki Nomoto
IPC分类号： G02B27/10
CPC分类号： G02B3/0056 , G02B3/0068 , G02B27/0101 , G02B27/48 , Y10T29/49826
摘要： An optical element includes first and second microlens array units on which microlenses are arranged. The microlenses are formed by lens contour having a polygonal shape in a plan view. The first and second microlens array units are arranged opposite to each other at a position where a distance between the first and second microlens array units is at least longer than a focal distance of the microlens, and are formed so that a direction of vertices of the lens contour of the microlens arranged on the first microlens array unit is different from a direction of vertices of the lens contour of the microlens arranged on the second microlens array unit. According to the above optical element, it is possible to appropriately suppress an influence of shift of the position between the first and second microlens array units, and it becomes possible to produce the optical element with ease.
摘要翻译：光学元件包括布置有微透镜的第一和第二微透镜阵列单元。微透镜由平面图中具有多边形形状的透镜轮廓形成。第一微透镜阵列单元和第二微透镜阵列单元在第一和第二微透镜阵列单元之间的距离至少长于微透镜的焦距的位置处彼此相对布置，并且形成为使得第一和第二微透镜阵列单元的顶点的方向布置在第一微透镜阵列单元上的微透镜的透镜轮廓不同于布置在第二微透镜阵列单元上的微透镜的透镜轮廓的顶点的方向。根据上述光学元件，可以适当地抑制第一和第二微透镜阵列单元之间的位置偏移的影响，并且可以容易地制造光学元件。

8. 发明授权

US06667947B2 Optical multi-layer information recordating medium 失效
公开(公告)号：US06667947B2
公开(公告)日：2003-12-23
申请号：US09988813
申请日：2001-11-20
申请人： Takanori Maeda , Ikuya Kikuchi , Makoto Sato , Katsuhiro Koike , Yoshitsugu Araki
发明人： Takanori Maeda , Ikuya Kikuchi , Makoto Sato , Katsuhiro Koike , Yoshitsugu Araki
IPC分类号： G11B724
CPC分类号： G11B7/1374 , G11B7/00718 , G11B7/1378 , G11B7/139 , G11B7/13925 , G11B7/24 , G11B7/24038 , G11B11/10584 , G11B2007/13727
摘要： The present invention relates to an optical multi-layer information recording medium for recording information therein and/or retrieving information therefrom upon radiation of a convergent beam of light. The recording medium includes at least two pairs of recording layer and light-transmissive layer stacked one after another. A first recording layer proximal to a beam radiation side and a second recording layer distal from the beam radiation side are made from a material that satisfies a function including the following parameters; transmissivity and absorptance of the first recording layer, absorptance of the second recording layer, a numerical aperture on the first recording layer, a numerical aperture of the second recording layer, and transmissivity of between the first and second recording layers. Even if the numerical apertures change with spherical aberration compensation made to respective recording layers, a power density of a light spot does not change. Thus, recordation can be performed with consistent recording characteristics.

9. 发明授权

US06594091B2 Optical pickup 失效
公开(公告)号：US06594091B2
公开(公告)日：2003-07-15
申请号：US09999195
申请日：2001-12-03
申请人： Takanori Maeda , Ikuya Kikuchi , Katsuhiro Koike , Makoto Sato
发明人： Takanori Maeda , Ikuya Kikuchi , Katsuhiro Koike , Makoto Sato
IPC分类号： G02B1318
CPC分类号： G02B27/0025 , G11B7/1378 , G11B7/139 , G11B7/13925
摘要： The present invention relates to an optical pickup having a constant numerical aperture even if spherical aberration is compensated for. The optical pickup is used in an information recording and/or reproducing machine. The information recording and/or reproducing machine records and/or reproduces information in a recording medium upon radiation of a light beam from a light source. The optical pickup includes a condensing optical system for condensing the light beam from the light source onto a recording layer of the recording medium. The condensing optical system includes an object lens. The condensing optical system also includes an aperture positioned about a focal length of the object lens apart from a position of a principal incidence plane of the object lens toward the light source along an optical axis of the condensing optical system.

10. 发明授权

US06339570B1 Optical pickup system 失效
标题翻译：光学拾取系统
公开(公告)号：US06339570B1
公开(公告)日：2002-01-15
申请号：US09385011
申请日：1999-08-27
申请人： Ikuya Kikuchi , Takanori Maeda
发明人： Ikuya Kikuchi , Takanori Maeda
IPC分类号： G11B700
CPC分类号： G11B7/1353 , G01B11/06 , G11B7/127 , G11B7/131 , G11B7/1356 , G11B7/1374 , G11B7/1381 , G11B7/13927 , G11B2007/0006
摘要： A light source is provided for emitting a light beam. The light beam from the light source is applied to a recording and reproducing plane of an optical disc and to a front surface of a transparent substrate of the optical disc. A photodetector is provided for detecting return light beams from the recording and reproducing plane and the front surface. A first signal is generated based on an output signal of the photodetector dependent on the return light beam from the recording and reproducing plane, and a second signal is generated based on an output signal of the photodetector dependent on the return light beam from the front surface. A signal relating to thickness information on a thickness of the transparent substrate is produced by comparing the first and second signals with each other.
摘要翻译：提供用于发射光束的光源。来自光源的光束被施加到光盘的记录和再现平面以及光盘的透明基板的前表面。提供了用于检测来自记录和再现平面和前表面的返回光束的光电检测器。基于取决于来自记录和再现平面的返回光束的光电检测器的输出信号产生第一信号，并且基于取决于来自前表面的返回光束的光电检测器的输出信号产生第二信号。通过将第一和第二信号彼此进行比较来产生与透明基板的厚度有关的厚度信息的信号。

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