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    Aberration correcting device, optical device, and optical head device
    1.
    发明授权
    Aberration correcting device, optical device, and optical head device 失效
    畸变校正装置，光学装置和光学头装置

    公开(公告)号：US08295143B2

    公开(公告)日：2012-10-23

    申请号：US13096783

    申请日：2011-04-28

    申请人： Koji Miyasaka ,  Takuji Nomura ,  Koichi Murata

    发明人： Koji Miyasaka ,  Takuji Nomura ,  Koichi Murata

    IPC分类号： G11B7/00

    CPC分类号： G11B7/13925 ,  G11B2007/0006

    摘要： The present invention relates to an aberration correcting device comprising: an aberration correcting element which modulates the phase of incident light; and a position adjusting section which can move the aberration correcting element in a direction perpendicular to an optical axis of the incident light, wherein the aberration correcting element includes first and second aberration correction plates, each of which is disposed such that the phase of transmitted light beam differs with transmission position of the incident light beam with the same phase, and the aberration correcting element has a reference arrangement which is an arrangement of the first and second aberration correction plates in which the light beams transmitted through the aberration correcting element have the same phase, and assuming that a point on the first aberration correction plate crossing the optical axis is a point Oa and a point on the second aberration correction plate crossing the optical axis is a point Ob in the reference arrangement, the position adjusting section includes a mechanism which can move the first and second aberration correction plates in a direction perpendicular to the optical axis and the points Oa and Ob in opposite directions from the reference arrangement and/or a mechanism which can rotate and move the first and second aberration correction plates by the same angle in different directions from the reference arrangement with the points Oa and Ob as the center.

    摘要翻译： 本发明涉及一种像差校正装置，包括：像差校正元件，其对入射光的相位进行调制; 以及位置调整部，其可以使与所述入射光的光轴垂直的方向移动所述像差修正元件，其中所述像差修正元件包括第一和第二像差校正板，每个所述第一和第二像差校正板被设置为使得透射光的相位 光束与具有相同相位的入射光束的透射位置不同，并且像差校正元件具有作为透射通过像差校正元件的光束具有相同的第一和第二像差校正板的布置的参考布置 并且假设与光轴交叉的第一像差校正板上的点是点Oa，并且与基准装置相交的第二像差校正板上的点是基准布置中的点Ob，位置调整部分包括机构 其可以移动第一和第二像差校正板 与基准装置相反的方向垂直于光轴的方向和点Oa和Ob以及/或能够使第一和第二像差校正板沿与参考装置不同的方向旋转相同角度的机构，和/ 以Oa和Ob为中心。

    Optical head
    2.
    发明授权
    Optical head 失效
    光头

    公开(公告)号：US07054253B1

    公开(公告)日：2006-05-30

    申请号：US09830849

    申请日：2000-08-30

    申请人： Takuji Nomura ,  Koichi Murata

    发明人： Takuji Nomura ,  Koichi Murata

    IPC分类号： G11B7/135

    CPC分类号： G02F1/134309 ,  G02F2203/18 ,  G11B7/0956 ,  G11B7/1369 ,  G11B7/13925

    摘要： An optical head device including a phase correcting element having an anisotropic optical medium sandwiched between a pair of substrates. The paired substrates have surfaces provided with electrodes for voltage application to the anisotropic optical medium. One electrode on at least one of the substrates has two or more power supply electrodes provided thereon at different positions, thereby providing different voltages to the respective power supply electrodes. The phase correcting element is provided between a collimating lens and a quarter wave plate in the optical head device.

    摘要翻译： 一种光学头装置，包括：相位校正元件，其具有夹在一对基板之间的各向异性光学介质。 成对的基板具有设置有用于向各向异性光学介质施加电压的电极的表面。 至少一个基板上的一个电极具有在不同位置上设置在其上的两个或多个电源电极，从而向相应的电源电极提供不同的电压。 相位校正元件设置在光学头装置中的准直透镜和四分之一波片之间。

    Current-switching cell and digital-to-analog converter
    4.
    发明授权
    Current-switching cell and digital-to-analog converter 有权
    电流开关单元和数模转换器

    公开(公告)号：US08493257B2

    公开(公告)日：2013-07-23

    申请号：US13145782

    申请日：2010-01-28

    申请人： Munehiko Nagatani ,  Hideyuki Nosaka ,  Shogo Yamanaka ,  Kimikazu Sano ,  Koichi Murata

    发明人： Munehiko Nagatani ,  Hideyuki Nosaka ,  Shogo Yamanaka ,  Kimikazu Sano ,  Koichi Murata

    IPC分类号： H03M1/66

    CPC分类号： H03M1/662 ,  H03M1/742

    摘要： Two D flip-flops (D-FFMA, D-FFMB) output two half-rate signals (DMR-A, DMR-B) by dividing a digital input signal (DM) into two signals and retiming them based on a clock signal (CLK) and a negative-phase clock signal (CLKB). First and second switches (SM1, SM2) are driven by the two half-rate signals (DMR-A, DMR-B). Third and fourth switches (SM3, SM4) are driven by a select signal SW and a negative-phase select signal SWB that have the same frequency as that of the clock signal (CLK) but a different phase from that of the clock signal (CLK). The current supplied from a current source (1) to a load (4) thus becomes a current signal corresponding to a conversion frequency twice the frequency of the clock signal (CLK).

    摘要翻译： 两个D触发器（D-FFMA，D-FFMB）通过将数字输入信号（DM）分成两个信号并基于时钟信号重新定时（DMR-A，D-FFMB）输出两个半速率信号 CLK）和负相位时钟信号（CLKB）。 第一和第二开关（SM1，SM2）由两个半速率信号（DMR-A，DMR-B）驱动。 第三和第四开关（SM3，SM4）由与时钟信号（CLK）频率相同的频率的选择信号SW和负相位选择信号SWB驱动，但与时钟信号（CLK ）。 因此，从电流源（1）提供给负载（4）的电流成为与时钟信号（CLK）的频率的两倍的转换频率相对应的电流信号。

    Phase plate and optical head device
    5.
    发明授权
    Phase plate and optical head device 有权
    相位板和光头装置

    公开(公告)号：US07782738B2

    公开(公告)日：2010-08-24

    申请号：US11874547

    申请日：2007-10-18

    申请人： Toshimasa Kakiuchi ,  Koichi Murata

    发明人： Toshimasa Kakiuchi ,  Koichi Murata

    IPC分类号： G11B7/00

    CPC分类号： G02B5/3083 ,  G02B27/288 ,  G11B7/1353 ,  G11B7/1367 ,  G11B7/1381 ,  G11B2007/0006

    摘要： A phase plate and an optical head device are provided, which are capable of suppressing changes of the amount of light incident on a light-receiving unit even if the phase difference caused by transmission through a protective layer of an optical recording medium differs depending on the type of optical recording medium.The phase plate includes a birefringent medium and produces a phase difference in linearly polarized light incident on the phase plate between a polarization component having a polarization direction parallel to the optic axis of the birefringent medium and a polarization component having a polarization direction perpendicular to the optic axis. In the phase plate, the birefringent medium includes a plurality of types of phase areas disposed adjacently; at least two types of adjacent phase areas are different from each other in phase differences, optic axes, or both phase differences and optic axes; and each of the plurality of types of phase areas is disposed so as to have two-fold rotational symmetry with respect to the optical axis of the phase plate.

    摘要翻译： 提供一种相位板和光学头装置，其能够抑制入射在光接收单元上的光量的变化，即使由于通过光记录介质的保护层的透射引起的相位差根据 类型的光记录介质。 相位板包括双折射介质，并且在具有平行于双折射介质的光轴的偏振方向的偏振分量和具有垂直于光学元件的偏振方向的偏振分量之间产生入射在相位板上的线偏振光的相位差 轴。 在相位板中，双折射介质包括相邻设置的多个相位区域; 至少两种类型的相邻区域在相位差，光轴或相位差和光轴两者中彼此不同; 并且多个类型的相位区域中的每一个被设置成相对于相位板的光轴具有双重旋转对称。

    Pump light source for raman amplification
    7.
    发明授权
    Pump light source for raman amplification 有权
    泵浦光源用于拉曼放大

    公开(公告)号：US06966704B2

    公开(公告)日：2005-11-22

    申请号：US10098129

    申请日：2002-03-15

    申请人： Masami Ikeda ,  Shigeyuki Furuta ,  Koichi Murata

    发明人： Masami Ikeda ,  Shigeyuki Furuta ,  Koichi Murata

    IPC分类号： H01S3/0941 ,  H01S5/022 ,  H01S5/40 ,  G02B6/36

    CPC分类号： H01S5/4025 ,  H01S3/09415 ,  H01S5/02248 ,  H01S5/0683

    摘要： A pump light source for Raman amplification. The pump light source includes a fixed module with at least one laser diode module, an electronic device for driving and controlling the laser diode module and a photodiode for monitoring optical output in the at least one laser diode. The pump light source also includes an additional module which contains a prescribed number of module cards. Each of the module cards are removably connected to the fixed module.

    摘要翻译： 用于拉曼放大的泵浦光源。 泵浦光源包括具有至少一个激光二极管模块的固定模块，用于驱动和控制激光二极管模块的电子装置和用于监测至少一个激光二极管中的光输出的光电二极管。 泵浦光源还包括一个包含规定数量的模块卡的附加模块。 每个模块卡可拆卸地连接到固定模块。

    Perfluoropolyether derivative
    8.
    发明申请
    Perfluoropolyether derivative 失效
    全氟聚醚衍生物

    公开(公告)号：US20050197408A1

    公开(公告)日：2005-09-08

    申请号：US11107980

    申请日：2005-04-18

    申请人： Daisuke Shirakawa ,  Takashi Okazoe ,  Kazuya Oharu ,  Shu-zhong Wang ,  Koichi Murata ,  Kengo Kawahara

    发明人： Daisuke Shirakawa ,  Takashi Okazoe ,  Kazuya Oharu ,  Shu-zhong Wang ,  Koichi Murata ,  Kengo Kawahara

    IPC分类号： A61K31/08 ,  C08G65/00 ,  C10M107/38

    CPC分类号： C08G65/007 ,  C10M107/38 ,  C10M2213/043 ,  C10M2213/0606 ,  C10N2240/204

    摘要： A novel perfluoropolyether derivative which is less likely to undergo decomposition, which is free from a problem of deterioration during its use, and which is useful as a lubricating oil or a coating agent, is provided. A compound represented by the following formula (1): HO—(CH2CH2O)r.(CH2CH (OH)CH2O)p—CH2CF2O(CF2CF2O)mCF2CH2O——(CH2CH(OH)CH2O)q.(CH2CH2O)s—H  Formula (1) wherein m represents an integer of from 3 to 200, and each of p, q, r and s which are independent of one another, represents an integer of from 0 to 100, provided that when each of p, q, r and s which are independent of one another, is an integer of at least 1, the arrangement of —(CH2CH2O)— and —(CH2CH(OH)CH2O)— units is not particularly limited, and when one of r and p is an integer of at least 2 and the other is an integer of at least 1, or when one of q and s is an integer of at least 2 and the other is an integer of at least 1, these units may be arranged in a block form or at random.

    摘要翻译： 提供了一种不太可能分解的新型全氟聚醚衍生物，其在使用中没有劣化的问题，并且其可用作润滑油或涂层剂。 由下式（1）表示的化合物：<？in-line-formula description =“In-line formula”end =“lead”？> HO-（CH 2 CH 2 （CH 2 CH（OH）CH 2 O）CH 2 CH（OH）CH 2 CH 2 2 CF 2 O 2（CF 2 CF 2 O）CF 2 O（CF 2 O 2 CF 2） 2 CH 2 - （CH 2 CH（OH）CH 2 O）q 其中m表示3〜200的整数，p，q，r和s彼此独立地表示0〜100的整数，条件是每当 彼此独立的p，q，r和s的整数为至少1的整数， - （CH 2 CH 2 CH 2 O）的排列 - 和 - （CH 2 CH（OH）CH 2 O） - 单元没有特别限制，当r和p中的一个为至少2的整数，另一个为 是至少为1的整数，或者q和s之一的整数 是至少为2的整数，另一个是至少为1的整数，这些单元可以以块形式或随机排列。