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    • 6. 发明申请
    • OPTICAL INFORMATION RECORDING METHOD AND APPARATUS USING THE SAME
    • 光信息记录方法和使用它的装置
    • US20100246367A1
    • 2010-09-30
    • US12720151
    • 2010-03-09
    • Hideaki OKANOTakashi Usui
    • Hideaki OKANOTakashi Usui
    • G11B7/00
    • G11B7/083G03H1/16G03H1/265G11B7/0065G11B7/00781
    • An optical information recording method includes the following steps. A converting step is converting a light beam into an information beam carrying information by using a spatial beam modulator. A focusing step is focusing the information beam on an optical information recording medium including an information recording layer. An irradiating step is irradiating the optical information recording medium with a reference beam and the information beam so that the reference beam and the information beam intersect with each other on the information recording layer by using an optical component. A rotating step is rotating the optical information recording medium or the optical component by using a drive unit for performing angle-multiplex recording. A management information recording step is recording management information at two or more relative angles having an angle interval smaller than twice at least a first null angle.
    • 光信息记录方法包括以下步骤。 A转换步骤是通过使用空间光束调制器将光束转换为携带信息的信息光束。 聚焦步骤将信息光束聚焦在包括信息记录层的光学信息记录介质上。 照射步骤是用参考光束和信息光束照射光学信息记录介质,使得参考光束和信息光束通过使用光学部件在信息记录层上彼此相交。 旋转步骤通过使用用于执行角度多路复用记录的驱动单元旋转光学信息记录介质或光学部件。 管理信息记录步骤是将角度间隔小于两倍至少第一空角的两个或多个相对角度记录管理信息。
    • 7. 发明申请
    • OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS AND METHOD
    • 光信息记录/再现设备和方法
    • US20100054103A1
    • 2010-03-04
    • US12409865
    • 2009-03-24
    • Shinichi TatsutaMasataka ShiratsuchiHideaki OkanoYuji Kubota
    • Shinichi TatsutaMasataka ShiratsuchiHideaki OkanoYuji Kubota
    • G11B7/00G11B7/135
    • G11B7/00772G03H1/26G03H1/265G11B7/08564G11B7/128G11B7/1362G11B7/1365G11B7/1369
    • An optical information recording/reproducing apparatus includes a spatial light modulator that converts an irradiation beam emitted from a light source to a single information beam that carries information; an optical system that causes the single information beam to be collected on an optical-information recording medium including an information recording layer capable of recording the information as hologram by using interference fringes produced due to interference between the single information beam and a plurality of reference beams, and causes each of the reference beams to be irradiated to the optical-information recording medium from mutually different directions so as to intersect with the single information beam in the information recording layer; and a controller that controls to cause the light source to emit the irradiation beam and performs angular multiplexing recording of the information in the information recording layer while controlling to drive either one of the optical-information recording medium and the optical system.
    • 一种光信息记录/再现装置,包括将从光源发射的照射光束转换为携带信息的单个信息光束的空间光调制器; 一种光学系统,其使得单个信息光束被收集在光学信息记录介质上,该光学信息记录介质包括能够通过使用由单个信息光束与多个参考光束之间的干涉而产生的干涉条纹将信息记录为全息图的信息记录层 并且使得每个参考光束从相互不同的方向照射到光学信息记录介质,以便与信息记录层中的单个信息光束相交; 以及控制器,其控制使光源发射照射光束,并且在控制驱动光信息记录介质和光学系统中的任一个的同时进行信息记录层中的信息的角度复用记录。
    • 8. 发明申请
    • Image pickup lens and image pickup apparatus
    • 图像拾取镜头和图像拾取装置
    • US20100046090A1
    • 2010-02-25
    • US12458777
    • 2009-07-22
    • Hideaki Okano
    • Hideaki Okano
    • G02B13/18H04N5/225G02B9/34
    • G02B13/004G02B9/34G03B29/00
    • An image pickup lens includes, in order from an object side to an image side, an aperture stop, a first lens element having a positive refractive power, a second lens element having a negative refractive power and a biconcave shape, a third lens element having a positive refractive power and a meniscus shape whose concave surface faces the object side, and a fourth lens element having a negative refractive power. In the image pickup lens, the following conditional expressions are satisfied, 0.20 25 where f denotes the focal length of the entire lens system, f2 denotes the focal length of the second lens element, νd1 denotes the Abbe number of the first lens element, and νd2 denotes the Abbe number of the second lens element.
    • 图像拾取透镜从物体侧到像侧依次包括孔径光阑,具有正折光力的第一透镜元件,具有负折光力的第二透镜元件和双凹面形状,第三透镜​​元件具有 凹面朝向物体侧的正屈光力和弯液面形状以及具有负屈光力的第四透镜元件。 在图像拾取透镜中,满足以下条件表达式:0.20 25其中f表示整个透镜系统的焦距,f2表示 第二透镜元件,d1表示第一透镜元件的阿贝数,&ngr; d2表示第二透镜元件的阿贝数。
    • 9. 发明申请
    • OPTICAL HEAD UNIT AND OPTICAL DISC DRIVE
    • 光头单元和光盘驱动器
    • US20080186832A1
    • 2008-08-07
    • US12023795
    • 2008-01-31
    • Katsuo IwataKazuhiro NagataHideaki Okano
    • Katsuo IwataKazuhiro NagataHideaki Okano
    • G11B7/00
    • G11B7/13927G11B7/0932G11B7/1369G11B2007/0006
    • According to an embodiment of the optical head unit includes two or more light sources, an objective lens which condenses the light beam having the predetermined wavelength output from each of the light sources to a recording layer of a recording medium, and captures a light beam reflected on the recording layer, a polarization control element arranged between the light sources and the objective lens, to optimize directions of polarization of the light beam having the predetermined wavelength output from the light source and the light beam reflected on the recording layer, in accordance with the wavelength thereof, on the basis of a voltage to be applied, a photodetector which receives the reflected light beam captured by the objective lens and outputs a predetermined signal, and a polarization controller which varies the direction of polarization set by the polarization control element, in accordance with the output of the photodetector, the fluctuations of the signals recorded and/or reproduced in each wavelength of the light beams with each of three kinds of optical discs different in recording density and format are stabilized.
    • 根据光头单元的实施例包括两个或更多个光源,将从每个光源输出的具有预定波长的光束聚光到记录介质的记录层的物镜,并且捕获反射的光束 在记录层上,设置在光源和物镜之间的偏振控制元件,以优化具有从光源输出的预定波长的光束和记录层上反射的光束的光束的偏振方向,根据 基于要施加的电压的波长,接收由物镜捕获的反射光束并输出预定信号的光电检测器,以及改变由偏振控制元件设定的偏振方向的偏振控制器, 根据光电检测器的输出,记录的信号的波动和/或 在记录密度和格式不同的三种光盘中的每一种光束的每个波长中再生。
    • 10. 发明申请
    • OPTICAL HEAD UNIT AND OPTICAL DISC APPARATUS
    • 光头单元和光盘设备
    • US20070097833A1
    • 2007-05-03
    • US11552208
    • 2006-10-24
    • Hideaki OKANOKatsuo IwataKazuhiro Nagata
    • Hideaki OKANOKatsuo IwataKazuhiro Nagata
    • G11B7/135
    • G11B7/1353G11B7/0903
    • According to one embodiment, an optical head unit of the invention combines preferably and simplifies a diffraction pattern of a diffraction element to guide a reflected laser beam divided into a predetermined number to a photodetector, in order to provide an optical head unit and an optical disc apparatus which provide a stable reproducing signal irrespectively of the standards of recording media, when reproducing information from a recording medium of optional standard. By using the combined and simplified diffraction pattern, the optical head unit easily provides outputs usable to detect first, second and third signals used to detect a tracking error when reproducing information recorded on an optical disc from a reflected laser beam from an optical disc, a fourth signal used to detect a focus error, and a fifth signal used to detect a spherical aberration compensating component.
    • 根据一个实施例,本发明的光头单元优选地并且简化了衍射元件的衍射图案,以将分成预定数量的反射激光束引导到光电检测器,以便提供光学头单元和光盘 当从可选标准的记录介质再现信息时,提供与记录介质的标准无关的稳定再现信号的装置。 通过使用组合和简化的衍射图案,光学头单元容易地提供可用于检测用于在从光盘反射的激光束再现记录在光盘上的信息时检测跟踪误差的第一,第二和第三信号的输出, 用于检测聚焦误差的第四信号,以及用于检测球面像差补偿分量的第五信号。