Sensing absolute position of an encoded object
    1.
    发明授权
    Sensing absolute position of an encoded object 有权
    感测编码对象的绝对位置

    公开(公告)号:US07675025B2

    公开(公告)日:2010-03-09

    申请号:US11440372

    申请日:2006-05-25

    IPC分类号: G01D5/34

    摘要: In one aspect of the present invention, a device for sensing an absolute position of an encoded object, comprising: a position tracking module comprising: a track illumination module configured to illuminate the encoded object with one more light beams, and to detect one or more light beams resulting from said illumination of said encoded object; and an absolute position determinator configured to determine the absolute position of the encoded object based on said one or more light beams resulting from said illumination of said encoded object.

    摘要翻译: 在本发明的一个方面,一种用于感测编码对象的绝对位置的装置,包括:位置跟踪模块,包括:轨道照明模块,配置成用一个或多个光束照射编码对象,并且检测一个或多个 由所述编码对象的所述照明产生的光束; 以及绝对位置确定器,被配置为基于由所述编码对象的所述照明产生的所述一个或多个光束来确定编码对象的绝对位置。

    Methods and systems for laser mode stabilization
    2.
    发明授权
    Methods and systems for laser mode stabilization 有权
    激光模式稳定的方法和系统

    公开(公告)号:US07397571B2

    公开(公告)日:2008-07-08

    申请号:US11440446

    申请日:2006-05-25

    IPC分类号: G01B9/02

    摘要: Systems and methods are provided or use with a light source which generates a light beam. These systems may include a detector which detects light beam information and which determines whether multiple modes are present in the light beam so that the light source may be adjusted. These systems may further include a beam splitting device, such as an optical wedge, to provide two sample beams that intersect to provide a fringe pattern. The detector may then detect this fringe pattern and compute a visibility value that may be used to determine whether multiple modes are present.

    摘要翻译: 提供或使用产生光束的光源的系统和方法。 这些系统可以包括检测光束信息并且确定光束中是否存在多个模式的检测器,从而可以调整光源。 这些系统还可以包括诸如光楔之类的分束装置,以提供相交以提供条纹图案的两个样品光束。 检测器然后可以检测该条纹图案并计算可用于确定是否存在多个模式的可见性值。

    Post-curing of holographic media
    3.
    发明申请
    Post-curing of holographic media 审中-公开
    后固化全息介质

    公开(公告)号:US20060275670A1

    公开(公告)日:2006-12-07

    申请号:US11440367

    申请日:2006-05-25

    IPC分类号: G03H1/04

    摘要: The present invention relates to embodiments of a process for subjecting a holographic storage medium to illuminative treatment to: (1) enhance or optimize recording of holographic data; (2) enhance or optimize reading of recorded holographic data; and/or (3) erase recorded holographic data. The present invention also relates to embodiments of a system comprising: (a) an illuminative treatment beam; (b) means for reducing the coherence of the beam and (c) means for transmitting the reduced coherence beam to cause illuminative treatment of: (1) an unrecorded portion of a holographic storage medium to provide pre-cured portions having increased ability to stably record holographic data; (2) a recorded portion of a holographic storage medium to provide a post-cured portion having reduced residual sensitivity; and/or (3) a recorded portion of a holographic storage medium having holographic data to provide an erased portion wherein at least some of the recorded holographic data is erased.

    摘要翻译: 本发明涉及对全息存储介质进行照明处理的方法的实施例:(1)增强或优化全息数据的记录; (2)增强或优化记录全息数据的阅读; 和/或(3)擦除所记录的全息数据。 本发明还涉及一种系统的实施例,包括:(a)照明处理光束; (b)用于减小光束的相干性的装置,(c)用于透射减小的相干光束的装置,以引起照明处理:(1)全息存储介质的未记录部分,以提供具有增强的稳定能力的预固化部分 记录全息数据; (2)全息存储介质的记录部分,以提供具有降低的残留灵敏度的后固化部分; 和/或(3)具有全息数据的全息存储介质的记录部分以提供擦除部分,其中记录的全息数据中的至少一些被擦除。

    Wavelength router with a transmissive dispersive element
    4.
    发明授权
    Wavelength router with a transmissive dispersive element 失效
    具有透射色散元件的波长路由器

    公开(公告)号:US06798951B2

    公开(公告)日:2004-09-28

    申请号:US09992087

    申请日:2001-11-12

    申请人: Larry Fabiny

    发明人: Larry Fabiny

    IPC分类号: G02B634

    摘要: A wavelength router is provided that selectively directs spectral bands between an input port and a set of output ports. The router includes a free-space optical train disposed between the input port and the output ports. The free-space optical train may include air-spaced elements or may be of generally monolithic construction. The optical train includes a transmissive dispersive element, such as a transmissive diffraction grating, disposed so that light is intercepted from the input port and encounters the transmissive dispersive element at least four times before reaching any of the output ports.

    摘要翻译: 提供波长路由器,其选择性地引导输入端口和一组输出端口之间的频谱带。 路由器包括设置在输入端口和输出端口之间的自由空间光学列表。 自由空间光学列车可以包括空气间隔元件或者可以是大体上整体的结构。 光学系列包括透射色散元件,例如透射衍射光栅,其布置成使光从输入端截取,并在到达任何输出端口之前至少碰到透射色散元件四次。

    Erasing holographic media
    6.
    发明申请
    Erasing holographic media 审中-公开
    擦除全息媒体

    公开(公告)号:US20060280096A1

    公开(公告)日:2006-12-14

    申请号:US11440366

    申请日:2006-05-25

    IPC分类号: G11B7/00

    摘要: The present invention relates to embodiments of a process for subjecting a holographic storage medium to illuminative treatment to: (1) enhance or optimize recording of holographic data; (2) enhance or optimize reading of recorded holographic data; and/or (3) erase recorded holographic data. The present invention also relates to embodiments of a system comprising: (a) an illuminative treatment beam; (b) means for reducing the coherence of the beam and (c) means for transmitting the reduced coherence beam to cause illuminative treatment of: (1) an unrecorded portion of a holographic storage medium to provide pre-cured portions having increased ability to stably record holographic data; (2) a recorded portion of a holographic storage medium to provide a post-cured portion having reduced residual sensitivity; and/or (3) a recorded portion of a holographic storage medium having holographic data to provide an erased portion wherein at least some of the recorded holographic data is erased.

    摘要翻译: 本发明涉及对全息存储介质进行照明处理的方法的实施例:(1)增强或优化全息数据的记录; (2)增强或优化记录全息数据的阅读; 和/或(3)擦除所记录的全息数据。 本发明还涉及一种系统的实施例,包括:(a)照明处理光束; (b)用于减小光束的相干性的装置,(c)用于透射减小的相干光束的装置,以引起照明处理:(1)全息存储介质的未记录部分,以提供具有增强的稳定能力的预固化部分 记录全息数据; (2)全息存储介质的记录部分,以提供具有降低的残留灵敏度的后固化部分; 和/或(3)具有全息数据的全息存储介质的记录部分以提供擦除部分,其中记录的全息数据中的至少一些被擦除。

    Diffraction grating with reduced polarization-dependent loss
    7.
    发明授权
    Diffraction grating with reduced polarization-dependent loss 失效
    具有降低的偏振相关损耗的衍射光栅

    公开(公告)号:US06995910B2

    公开(公告)日:2006-02-07

    申请号:US10241105

    申请日:2002-09-10

    IPC分类号: G02B5/18

    CPC分类号: G02B5/1861 G02B5/1809

    摘要: A diffraction grating that achieves high diffraction efficiency at all polarizations for optical signals at telecommunications wavelengths is provided. The diffraction grating has a substrate and a plurality of reflective faces oriented at respective blaze angles θb spaced along the substrate surface, with the blaze angles substantially differ from the Lit trow condition. Each reflective surface is supported by a support wall connected substantially with the substrate surface.

    摘要翻译: 提供了在电信波长处的光信号的所有极化下实现高衍射效率的衍射光栅。 衍射光栅具有基板和多个反射面,多个反射面定位在沿着基板表面间隔开的相应的开口角度θ1,其中闪光角度与提光条件基本上不同。 每个反射表面由基本上与基底表面连接的支撑壁支撑。

    High-efficiency low-polarization-dependent-loss lamellar diffraction-grating profile and production process
    8.
    发明授权
    High-efficiency low-polarization-dependent-loss lamellar diffraction-grating profile and production process 有权
    高效低极化依赖损耗层状衍射光栅轮廓和生产工艺

    公开(公告)号:US06747799B2

    公开(公告)日:2004-06-08

    申请号:US09992849

    申请日:2001-11-12

    IPC分类号: G02B518

    摘要: A reflective lamellar diffraction grating is provided that is suitable for a variety of applications, including applications related to C-band telecommunication functions. The average efficiency of the diffraction grating in S- and P-polarization states exceeds 90% while simultaneously providing a PDL less than 0.2 dB over the entire wavelength range used for C-band telecommunication functions. The diffraction grating is thus suitable for incorporation into various telecommunication systems, including a wavelength router configured for routing signals having a plurality of spectral bands.

    摘要翻译: 提供了一种适用于各种应用的反射层状衍射光栅,包括与C波段通信功能有关的应用。 S偏振态和P偏振态的衍射光栅的平均效率超过90%,同时在用于C波段通信功能的整个波长范围内同时提供小于0.2dB的PDL。 因此,衍射光栅适合于并入各种电信系统,包括配置用于路由具有多个光谱带的信号的波长路由器。

    Diffraction grating with reduced polarization-dependent loss
    9.
    发明授权
    Diffraction grating with reduced polarization-dependent loss 有权
    具有降低的偏振相关损耗的衍射光栅

    公开(公告)号:US06449096B1

    公开(公告)日:2002-09-10

    申请号:US09615300

    申请日:2000-07-13

    IPC分类号: G02B518

    CPC分类号: G02B5/1861 G02B5/1809

    摘要: A diffraction grating that achieves high diffraction efficiency at all polarizations for optical signals at telecommunications wavelengths is provided. The diffraction grating has a substrate and a plurality of reflective faces oriented at respective blaze angles &thgr;b spaced along the substrate surface, with the blaze angles substantially differ from the Littrow condition. Each reflective surface is supported by a support wall connected substantially with the substrate surface.

    摘要翻译: 提供了在电信波长处的光信号的所有极化下实现高衍射效率的衍射光栅。 衍射光栅具有基板和多个反射面,该反射面定位成沿着基板表面间隔开的各个闪耀角,其中闪光角度与Littrow条件基本不同。 每个反射表面由基本上与基底表面连接的支撑壁支撑。

    Optical delay line in holographic drive
    10.
    发明申请
    Optical delay line in holographic drive 审中-公开
    光学延迟线在全息驱动

    公开(公告)号:US20060291022A1

    公开(公告)日:2006-12-28

    申请号:US11440358

    申请日:2006-05-25

    IPC分类号: G02B5/32

    摘要: The present invention relates to a system comprising a holographic data storage drive that records holographic digital data in a holographic recording medium, and which comprises: a data beam path having a first optical path length; and a reference beam path having a second optical path length; wherein one of the data beam and reference beams paths comprise an optical delay line so that the difference between the first and second optical path lengths is less than the laser coherence length. The present invention further relates to a method for operating a laser in the holographic data storage drive in a multi-mode state during the recording of holographic digital data the holographic medium without adverse effects on the strength of the interference patterns formed.

    摘要翻译: 本发明涉及一种包括在全息记录介质中记录全息数字数据的全息数据存储驱动器的系统,包括:具有第一光程长度的数据光束路径; 以及具有第二光路长度的参考光束路径; 其中数据束和参考光束路径中的一个包括光学延迟线,使得第一和第二光路长度之间的差小于激光相干长度。 本发明还涉及一种用于在全息数据数据记录全息介质期间在多模态下在全息数据存储驱动器中操作激光的方法,而对所形成的干涉图案的强度没有不利影响。