Multi Layer Variable Refractive Index Unit
    11.
    发明申请
    Multi Layer Variable Refractive Index Unit 审中-公开
    多层可变折射率单位

    公开(公告)号:US20080253262A1

    公开(公告)日:2008-10-16

    申请号:US10598991

    申请日:2005-03-08

    IPC分类号: G11B7/135

    摘要: A variable refractive index unit (140) includes an optical axis and a first layer (144a, 146a, 146a′ of controllably variable refractive index extending in a first predetermined configuration in a first plane transverse the optical axis. A second, different layer (144b, 146b, 146b′ of controllably variable refractive index extends in a second predetermined configuration in a second, different plane transverse the optical axis. The second layer (144b, 146b, 146b′) overlaps the first layer (144a, 146a, 146a′).

    摘要翻译: 可变折射率单元(140)包括光轴和在第一平面中沿第一预定结构延伸的可控地可变的折射率的第一层(144a,146a,146a'),横向于光轴;第二,不同的 第二层(144b,146b,146b')与第一层(144b,146b,146b')重叠在第一层 层(144a,146a,146a')。

    Optical Device for Recording and Reproducing Holographic Data
    12.
    发明申请
    Optical Device for Recording and Reproducing Holographic Data 审中-公开
    用于记录和再现全息数据的光学装置

    公开(公告)号:US20080291806A1

    公开(公告)日:2008-11-27

    申请号:US11568717

    申请日:2005-05-09

    IPC分类号: G11B7/00

    摘要: The invention relates to an optical recording and reproducing device. This device comprises means for receiving a recording medium (204), a radiation source (200) for producing a radiation beam, means (206) for detecting light corresponding to a holographic signal recorded in the recording medium, means (202) for directing the radiation beam towards the receiving means, and a reflective spatial light modulator (205) placed on the other side of the receiving means with respect to the detecting means.

    摘要翻译: 本发明涉及一种光学记录和再现装置。 该装置包括用于接收记录介质(204),用于产生辐射束的辐射源(200)的装置,用于检测对应于记录在记录介质中的全息信号的光的装置(206),用于引导 朝向接收装置的辐射束,以及相对于检测装置放置在接收装置的另一侧的反射空间光调制器(205)。

    Optical Device, in Particular Holographic Device
    13.
    发明申请
    Optical Device, in Particular Holographic Device 审中-公开
    光学装置,特别是全息装置

    公开(公告)号:US20080130462A1

    公开(公告)日:2008-06-05

    申请号:US11814006

    申请日:2006-01-06

    IPC分类号: G11B7/0065

    摘要: An optical device comprises a light source (301) for generating a radiation beam, a reflective diffractive structure (304) for reflecting and diffracting said radiation beam along an optical path (PP), imaging means (305) for imaging the radiation beam after it has been reflected and diffracted by said reflective diffractive structure, and a holographic beam splitter (303) between said reflective diffractive structure and said imaging means along said optical path. Such an optical device can be used for recording data into a holographic medium.

    摘要翻译: 光学装置包括用于产生辐射束的光源(301),用于沿着光路(PP)反射和衍射所述辐射束的反射衍射结构(304),用于对其辐射束进行成像的成像装置(305) 已经被所述反射衍射结构反射和衍射,以及沿着所述光路在所述反射衍射结构和所述成像装置之间的全息分束器(303)。 这种光学装置可用于将数据记录到全息介质中。

    APPARATUS AND METHOD FOR ENHANCED OPTICAL TRANSMISSION THROUGH A SMALL APERTURE, USING RADIALLY POLARIZED RADIATION
    14.
    发明申请
    APPARATUS AND METHOD FOR ENHANCED OPTICAL TRANSMISSION THROUGH A SMALL APERTURE, USING RADIALLY POLARIZED RADIATION 审中-公开
    通过小孔径进行放射性极化辐射增强光传输的装置和方法

    公开(公告)号:US20090251771A1

    公开(公告)日:2009-10-08

    申请号:US11721562

    申请日:2005-12-19

    IPC分类号: H01S3/16 G02B5/30

    摘要: An apparatus for enhanced transmission of radiation, comprising at least one radiation source (12), a metal plate (18) with a first (20) and a second (22) surface and at least one aperture (24) provided in the metal plate (18) and extending from the first (20) to the second (22) surface, the metal plate (18) having a periodic surface topography (26) provided on at least one of the first (20) and the second (22) surfaces, and radiation (13) coming from the radiation source (12) and being incident on one of the surfaces (20,22) of the metal plate (18) interacts with a surface plasmon mode on at least one of the surfaces of the metal plate (18), thereby enhancing transmission of radiation through the at least one aperture (24) of the metal plate (18). The apparatus for enhanced optical transmission comprises means (15) for generating radially polarized radiation (16), which is incident on one of the surfaces (20,22) of the metal plate (18) with a surface topography (26), resulting in a more efficient coupling of the radiation to the plasmons and thereby in a further enhancement of the optical transmission.

    摘要翻译: 一种用于增强辐射透射的装置,包括至少一个辐射源(12),具有第一(20)和第二(22)表面的金属板(18)和设置在金属板中的至少一个孔(24) (18)并且从所述第一(20)至所述第二(22)表面延伸,所述金属板(18)具有设置在所述第一(20)和第二(22)中的至少一个上的周期性表面形貌(26) 表面和来自辐射源(12)并且入射在金属板(18)的一个表面(20,22)上的辐射(13)与表面等离子体激元模式在至少一个表面上相互作用 金属板(18),从而增强辐射通过金属板(18)的至少一个孔(24)的透射。 用于增强光学传输的装置包括用于产生径向偏振辐射(16)的装置(15),其以表面形貌(26)入射到金属板(18)的一个表面(20,22)上,导致 更有效地将辐射耦合到等离子体激元,从而进一步增强光传输。

    Optical Data Storage System and Method of Optical Recording and/or Reading
    15.
    发明申请
    Optical Data Storage System and Method of Optical Recording and/or Reading 审中-公开
    光学数据存储系统和光学记录和/或读取方法

    公开(公告)号:US20080279070A1

    公开(公告)日:2008-11-13

    申请号:US10599992

    申请日:2005-04-15

    IPC分类号: G11B5/58 G11B7/00

    摘要: An optical data storage system for recording and/or reading, using a radiation beam, having a wavelength λ, focused onto a data storage layer of an optical data storage medium is described. The system comprises the medium having a cover layer that is transparent to the focused radiation beam, an optical head, including an objective having a numerical aperture NA, said objective including a solid immersion lens that is adapted for being present at a free working distance of smaller than λ/10 from an outermost surface of said medium. The optical head comprises a first adjustable optical element corresponding to the solid immersion lens, means for axially moving the first optical element and dynamically keeping constant the distance between cover layer and solid immersion tens, a second adjustable optical element, means for dynamically adjusting the second optical element for changing the focal position of the focal point of the focused radiation beam relative to an exit surface of the solid immersion lens. This achieves reliable read-out and writing during cover layer thickness variations. Further a method is described for controlling such a system.

    摘要翻译: 描述了一种光学数据存储系统,用于使用聚焦到光学数据存储介质的数据存储层上的具有波长λ的辐射束进行记录和/或读取。 该系统包括具有对聚焦辐射束透明的覆盖层的介质,包括具有数值孔径NA的物镜的光学头,所述物镜包括固体浸没透镜,该固体浸没透镜适于存在于自由工作距离 比所述介质的最外表面小于λ/ 10。 光学头包括对应于固体浸没透镜的第一可调节光学元件,用于轴向移动第一光学元件并动态地保持覆盖层和固体浸渍十周之间的距离的装置,第二可调节光学元件,用于动态地调节第二光学元件的装置 光学元件,用于改变聚焦辐射束的焦点相对于固体浸没透镜的出射表面的焦点位置。 这样可以在覆盖层厚度变化期间实现可靠的读出和写入。 此外,描述了一种用于控制这种系统的方法。