Hologram recording method and hologram recording apparatus
    2.
    发明申请
    Hologram recording method and hologram recording apparatus 审中-公开
    全息记录方法和全息记录装置

    公开(公告)号:US20040240012A1

    公开(公告)日:2004-12-02

    申请号:US10808372

    申请日:2004-03-25

    IPC分类号: G03H001/04 G11B007/00

    摘要: Quality of a reproduced light beam is improved, and rewriting and recording are performed at high speed without erasing data. Each page of a hologram is newly recorded so that the maximum point of diffraction light beam intensity in reproducing the newly recorded hologram is located at a position where diffraction light beam intensity from a data page of a hologram which has been previously recorded in a hologram recording medium is minimized at the time of reproducing the data.

    摘要翻译: 再现光束的质量得到改善,并且在不擦除数据的情况下高速执行重写和记录。 新记录全息图的每一页,使得再现新记录的全息图中的最大衍射光束强度位于从先前记录在全息图记录中的全息图的数据页的衍射光束强度的位置 在再现数据时介质被最小化。

    Optical recording medium and method for producing such an optical recording medium
    3.
    发明申请
    Optical recording medium and method for producing such an optical recording medium 失效
    光记录媒体及其制造方法

    公开(公告)号:US20040190093A1

    公开(公告)日:2004-09-30

    申请号:US10657147

    申请日:2003-09-09

    IPC分类号: G03H001/04 G03H001/02

    摘要: The present invention relates to a method for producing an optical recording medium. In the method, on the surface of a recording layer formed by spin-coating a first coating solution containing a photo-isomerizable component, a second coating solution that contains a photo-isomerizable component that can be isomerized by radiation having the same wavelength as radiation used for isomerizing the photo-isomerizable component contained in the recording layer and incapable of dissolving the recording layer is spin-coated to form an intermediate layer. Since the intermediate layer thus formed cannot be dissolved by the first coating solution, a recording layer is further laminated on this layer. Thus, it becomes possible to make the recording layer thicker and also to provide a high-density recording characteristic.

    摘要翻译: 本发明涉及一种光记录介质的制造方法。 在该方法中,在通过旋涂含有光可异构化组分的第一涂布溶液形成的记录层的表面上,含有可通过与辐射相同波长的辐射异构化的光可异构化组分的第二涂层溶液 用于异构化包含在记录层中并且不能溶解记录层的光可异构化组分被旋涂以形成中间层。 由于如此形成的中间层不能被第一涂布溶液溶解,所以在该层上进一步层压记录层。 因此,可以使记录层更厚并且还提供高密度记录特性。

    Optical recording medium and optical recording method
    4.
    发明申请
    Optical recording medium and optical recording method 审中-公开
    光记录介质和光记录方法

    公开(公告)号:US20040190095A1

    公开(公告)日:2004-09-30

    申请号:US10659389

    申请日:2003-09-11

    IPC分类号: G03H001/16 G03H001/04

    摘要: In a recording layer, a recording track is provided in the form of concentric circles or a spiral along a moving direction of a recording spot. When only specific Fourier transform components in a Fourier transform image of signal light are recorded, a width of the recording track provided in the recording layer is set corresponding to a diffraction order of the Fourier transform component to be recorded. That is to say, according to the diffraction order of the Fourier transform component to be recorded, the width of the recording track is determined within the range satisfying the following relationship. Here w is the width of the recording track, d is a length of one side of one-bit data of the signal light, null is a wavelength of the signal light, F is a focal distance of a lens system, and n is an integer of 2, 3, or 4. 1 null null null null F d null w null n null null null null null null null F d

    摘要翻译: 在记录层中,沿着记录点的移动方向以同心圆或螺旋的形式提供记录轨道。 当仅记录信号光的傅里叶变换图像中的特定傅里叶变换分量时,设置在记录层中的记录轨道的宽度对应于要记录的傅立叶变换分量的衍射级。 也就是说,根据要记录的傅里叶变换分量的衍射级,在满足以下关系的范围内确定记录轨道的宽度。 这里w是记录磁道的宽度,d是信号光的1位数据的一侧的长度,λ是信号光的波长,F是透镜系统的焦距,n是透镜系统的焦距 2,3或4.的整数。 1 lambda F > > lambda / MSTYLE> F d

      Optical recording apparatus and optical recording/reproducing apparatus
      5.
      发明申请
      Optical recording apparatus and optical recording/reproducing apparatus 失效
      光记录装置和光记录/再现装置

      公开(公告)号:US20040190094A1

      公开(公告)日:2004-09-30

      申请号:US10660485

      申请日:2003-09-12

      IPC分类号: G03H001/12

      摘要: An optical recording/reproducing apparatus having excellent resistance against vibration and noise is provided. In recording, coherent light is polarization-modulated with a spatial light modulator to generate signal light and reference light whose polarization directions are crossed at right angles with each other. The signal light permeates a polarizing beam splitter, and is incident to a quarter wavelength plate. The reference light passes through a passing hole, is diffused by a light diffuser and is incident to the quarter wavelength plate. The reference and signal light are converted into circularly polarized light which revolve in directions opposite to each other and condensed by a condenser lens, and then a predetermined area of an optical recording medium is irradiated with the reference and signal light. Thus, the reference and signal light are generated by modulating the incident light from the same light source and are coaxially incident to the polarizing beam splitter.

      摘要翻译: 提供具有优异的抗振动和噪声的光学记录/重放装置。 在记录中,相干光利用空间光调制器进行偏振调制,以产生信号光和偏振方向相互交叉的参考光。 信号光透过偏振光束分离器,入射到四分之一波长的光板。 参考光通过通孔,被光扩散器扩散并入射到四分之一波长板。 参考信号光和信号光被转换为以相反方向旋转并由聚光透镜聚光的圆偏振光,然后用参考信号光照射光记录介质的预定区域。 因此,通过调制来自相同光源的入射光并同轴地入射到偏振分束器来产生参考信号光和信号光。