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    HOLOGRAPHIC DATA STORAGE SYSTEM
    1.
    发明申请
    HOLOGRAPHIC DATA STORAGE SYSTEM 有权
    全景数据存储系统

    公开(公告)号：US20160196849A1

    公开(公告)日：2016-07-07

    申请号：US14908472

    申请日：2014-08-12

    申请人： LG ELECTRONICS INC.

    发明人： Nakyeong KIM ,  Byounggyo AHN

    IPC分类号： G11B7/1353 ,  G11B7/1395 ,  G11B7/1365

    CPC分类号： G11B7/1365 ,  G03H2210/22 ,  G03H2222/31 ,  G11B7/0037 ,  G11B7/0065 ,  G11B7/08564 ,  G11B7/135 ,  G11B7/1356 ,  G11B7/1362 ,  G11B7/1372 ,  G11B7/1378 ,  G11B2007/0009 ,  G11B2007/00656 ,  G11B2007/13727

    摘要： Provided is a holographic data storage system characterized by including: a first polarizing beam splitter (PBS), wherein at least either of a first lens module and a second lens module transmits P-polarized light and reflects S-polarized light; a relay lens collecting light passing through the first PBS; a mirror reflecting the light collected through the relay lens back to the relay lens; and a quarter wave plate located between a second PBS beam splitter and the relay lens, converting transmitted linearly polarized light into circularly polarized light, and converting the circularly polarized light into linearly polarized light. By reducing the volume of the relay lens, it is possible to decrease the size of the holographic data storage system, and by decreasing the number of lenses, it is possible to lower manufacturing costs.

    摘要翻译： 提供一种全息数据存储系统，其特征在于包括：第一偏振分束器（PBS），其中第一透镜模块和第二透镜模块中的至少一个透射P偏振光并反射S偏振光; 收集穿过第一PBS的光的中继透镜; 将通过中继透镜收集的光反射回中继透镜的镜子; 以及位于第二PBS分光器和中继透镜之间的四分之一波片，将透射的线偏振光转换成圆偏振光，并将圆偏振光转换成线偏振光。 通过减小中继透镜的体积，可以减小全息数据存储系统的尺寸，并且通过减少透镜数量，可以降低制造成本。

    Laminate wavelength plate and optical pickup using it
    2.
    发明申请
    Laminate wavelength plate and optical pickup using it 有权
    层压波长板和光学拾音器使用它

    公开(公告)号：US20050180296A1

    公开(公告)日：2005-08-18

    申请号：US10512698

    申请日：2003-04-24

    申请人： Masayuki Ooto

    发明人： Masayuki Ooto

    IPC分类号： G11B7/1365 ,  G02B5/30 ,  G11B7/00

    CPC分类号： G11B7/1365 ,  G02B5/3083 ,  G11B7/1275 ,  G11B2007/0006

    摘要： A conventional broadband quarter-wave plate has not completely solved the wavelength dependence and has different efficiencies of shifting the phase by 90° depending on the wavelengths, and therefore has a problem that it cannot fulfill the strict specifications on the optical characteristics which are demanded of a wave plate from a viewpoint of the optical efficiency and the like in an optical pickup device compatible with a plurality of different wavelengths. To provide a wave plate which completely functions as a quarter-wave plate with respect to a plurality of different wavelengths and an optical pickup using that wave plate to solve the problem, the present invention provides a laminated wave plate, wherein a wave plate with a phase difference α and a wave plate with a phase difference β with respect to monochromatic light with a wavelength λ are laminated in such a way that directions of optical axes of said plates intersect each other, so that the laminated wave plate, as a whole, functions as a quarter-wave plate, and which is characterized in that a relationship between the α and the β satisfies the following formulas: (3/2)×π≠α−2×π×([[n]]m−1) π≠β−2×π×(n−1),wherein: each of m and n is a positive integer.

    摘要翻译： 常规的宽带四分之一波长板尚未完全解决波长依赖性，并且根据波长将相位相移90°具有不同的效率，因此存在不能满足对要求的光学特性的严格规格的问题 在与多个不同波长相容的光学拾取装置中从光学效率等的观点出发的波片。 为了提供相对于多个不同波长完全用作四分之一波片的波片和使用该波片的光学拾取器来解决问题，本发明提供了一种叠层波片，其中具有 相位差α相对于具有波长λ的单色光具有相位差β的波片以这样的方式层叠，使得所述板的光轴的方向彼此相交，使得叠层波片整体上， 用作四分之一波片，其特征在于α和β之间的关系满足以下公式：<？in-line-formula description =“In-line formula”end =“lead”？>（ 3/2）xpi <> alpha-2xpix（[[n]] m-1）<？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“在线公式”end =“lead”？> pi <β-2xpix（n-1），<？in-line-formula description =“In-line Formulas”end =“tail”？> 其中：m和n分别为正整数。

    Optical information recording/reproduction method and device
    5.
    发明授权
    Optical information recording/reproduction method and device 有权

    公开(公告)号：US09734858B2

    公开(公告)日：2017-08-15

    申请号：US12996701

    申请日：2009-03-13

    申请人： Daisuke Barada ,  Kiyonobu Tamura ,  Takashi Fukuda

    发明人： Daisuke Barada ,  Kiyonobu Tamura ,  Takashi Fukuda

    IPC分类号： G11B7/00 ,  G11B7/0065 ,  G11B7/1365 ,  G11B7/1369 ,  G11B7/12

    CPC分类号： G11B7/0065 ,  G03H2222/31 ,  G03H2222/34 ,  G11B7/12 ,  G11B7/1365 ,  G11B7/1369

    摘要： It is possible to provide a new information recording/reproduction method and a device which can realize a small-size large-capacity memory having a characteristic equivalent to or higher than a hologram memory. The optical information recording/reproduction device includes: recording light generator (51) which generates a recording light (55) in a polarization state having two mutually orthogonal polarization components with a phase difference at an arbitrary polarization base; reproduction light generator (61) which generates a reproduction light (65) in a polarization state having only a single polarization component at a arbitrary polarization basis; recording medium (71) in which optical information is recorded by recording light (55) and the recorded optical information is reproduced by reproduction light; and optical information detector (polarimeter 81) which retrieves information light (72) after being applied to recording medium (71) and detects the light as optical information. Provided is also an optical information recording/reproduction method using the device.

    Optical pickup device and optical disk device
    7.
    发明申请
    Optical pickup device and optical disk device 审中-公开
    光拾取装置和光盘装置

    公开(公告)号：US20050157627A1

    公开(公告)日：2005-07-21

    申请号：US10508812

    申请日：2003-04-15

    申请人： Takakiyo Kanazawa ,  Tetsu Watanabe ,  Sunao Aoki

    发明人： Takakiyo Kanazawa ,  Tetsu Watanabe ,  Sunao Aoki

    IPC分类号： G11B7/12 ,  G11B7/122 ,  G11B7/123 ,  G11B7/1356 ,  G11B7/1365 ,  G11B7/22 ,  G11B7/00

    CPC分类号： G11B7/1356 ,  G11B7/122 ,  G11B7/123 ,  G11B7/1365 ,  G11B7/22

    摘要： A polarizing beam splitter (21) is secured in a state wherein a bottom plate (2102) thereof contacts closely with an upper face of a substrate (16) and a light receiving element (23) without a gap left therebetween. A quarter-wave plate (17) is attached to the polarizing beam splitter in a state wherein a lower face (1702) thereof contacts closely with an upper face (2104) without a gap left therebetween such that the lengthwise directions and the widthwise directions of them coincide with each other. An objective lens plate (18) is attached in a state wherein a lower face (1806) thereof contacts closely with an upper face (1704) of the quarter-wave plate without a gap left therebetween. A light source (22) is bonded at a mount member (22B) thereof to the upper face of the substrate by means of a bonding agent or the like such that an emitting face of a semiconductor laser (22A) and a front face of the mount member contact closely with a portion of a side face (2106) of the polarizing beam splitter without a gap left therebetween.

    摘要翻译： 偏振分束器（21）固定在其底板（2102）与衬底（16）的上表面和光接收元件（23）紧密接触的状态下，其间没有间隙。 四分之一波片（17）在其下表面（1702）与上表面（2104）紧密接触而没有间隙的状态下附接到偏振分束器，使得纵向方向和宽度方向 他们相互重合。 在其下表面（1806）与四分之一波片的上表面（1704）紧密接触而没有留下间隙的状态下安装物镜板（18）。 光源（22）通过粘合剂等将其安装部件（22B）粘合到基板的上表面，使得半导体激光器（22A）的发射面和正面 的安装构件与偏振分束器的侧面（2106）的一部分紧密接触，而没有间隙留下。

    Optical pickup device for use in a video and/or audio disc player
    8.
    发明授权
    Optical pickup device for use in a video and/or audio disc player 失效
    用于视频和/或音频光盘播放器的光学拾取装置

    公开(公告)号：US4429378A

    公开(公告)日：1984-01-31

    申请号：US249338

    申请日：1981-03-31

    申请人： Katsuharu Sato

    发明人： Katsuharu Sato

    IPC分类号： G02B5/04 ,  G02B27/00 ,  G02B27/28 ,  G11B7/08 ,  G11B7/12 ,  G11B7/135 ,  G11B7/1356 ,  G11B7/1365 ,  G11B7/00

    CPC分类号： G11B7/1365 ,  G02B27/283 ,  G11B7/08 ,  G11B7/12 ,  G11B7/1356

    摘要： An optical pickup device is placed in a video and/or audio disc player operative to reproduce information recorded in the form of an optical pattern such as a train of pits on a recording disc, in which the direction of light beam emitted from a light source is parallel to the propagation path of light impinging onto and reflected from the recording disc toward a photosensor. A polarization prism is used to deflect the light from the light source toward the recording disc, which prism cooperates with a quarter wave plate to act as a beam splitter.

    摘要翻译： 光学拾取装置被放置在视频和/或音频盘播放器中，用于再现以记录盘上的诸如一系列凹坑的光学图案的形式记录的信息，其中从光源发射的光束的方向 平行于入射到记录盘上并从记录盘反射到光传感器的光的传播路径。 使用偏振棱镜将来自光源的光偏转到记录盘，该棱镜与四分之一波片配合以用作分束器。

    Optical pickup
    10.
    发明授权
    Optical pickup 有权

    公开(公告)号：US10283157B2

    公开(公告)日：2019-05-07

    申请号：US15888397

    申请日：2018-02-05

    申请人： Panasonic Intellectual Property Management Co., Ltd.

    发明人： Seiji Hoshi ,  Noriaki Terahara ,  Fumitomo Yamasaki

    IPC分类号： G11B7/125 ,  G11B7/1365 ,  G11B7/1267 ,  G11B7/22

    摘要： An optical pickup includes an optical base mounted with at least one optical element, a light source that supplies light incident on the at least one optical element, and a tilt spacer that is disposed between the light source and the optical base to adjust a characteristic of the light that enters the optical base. With the characteristic of the light that enters the optical base adjusted by the tilt spacer, the optical base and the light source are fixed directly to each other.