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    • 31. 发明授权
    • Holographic storage using shift multiplexing
    • 全息存储使用移位复用
    • US5949558A
    • 1999-09-07
    • US889797
    • 1997-07-08
    • Demetri PsaltisMichael J. LeveneAllen PuGeorge Barbastathis
    • Demetri PsaltisMichael J. LeveneAllen PuGeorge Barbastathis
    • G03H1/26G11B7/0065
    • G03H1/26G11B7/0065G03H2001/2675
    • The invention is embodied in a method of recording successive holograms in a recording medium, using at least a fan of M waves along at least a first axis with a separation angle between adjacent waves and directing the fan of M waves as a reference beam along a reference beam path onto the recording medium, successively modulating a wave with a succession of images to produce a succession of signal beams along a signal beam path lying at a propagation angle relative to the reference beam path so that the signal and reference beams intersect at abeam intersection lying within the medium, the beam intersection having a size corresponding to beam areas of the reference and signal beams, producing a succession of relative displacements in a direction parallel to the first axis between the recording medium and the beam intersection of the signal and reference beam paths in synchronism with the succession of signal beams, each of the displacements being less than the size of the intersection whereby to record successive holograms partially overlapped along a direction of the displacements.
    • 本发明体现在一种在记录介质中记录连续的全息图的方法,至少使用沿着至少第一轴的M波的风扇,并在相邻的波之间具有分隔角,并将M波的风扇作为参考光束沿着 参考光束路径到记录介质上,连续地调制具有一系列图像的波,以沿着相对于参考光束路径传播角度的信号光束路径产生一系列信号光束,使得信号和参考光束以abeam相交 交叉点位于介质内,光束交点具有对应于基准信号光束的光束区域的大小,在记录介质与信号和参考光束的交叉点之间沿与平行于第一轴的方向产生一系列相对位移 光束路径与信号光束的连续同步,每个位移小于相交的大小 从而记录沿位移方向部分地重叠的连续的全息图。
    • 33. 发明授权
    • Phase from defocused color images
    • 相位从散焦的彩色图像
    • US08432553B2
    • 2013-04-30
    • US12898830
    • 2010-10-06
    • Laura A. WallerGeorge Barbastathis
    • Laura A. WallerGeorge Barbastathis
    • G01B9/02G01B11/02
    • G01J9/00
    • Phase differences associated with a defocused wavefront can be determined from a single color image. The color image, which is a measurement of intensity as a function of wavelength, is used to calculate the change in intensity with respect to wavelength over the image plane. The change in intensity can then be used to estimate a phase difference associated with the defocused wavefront using two-dimensional fast Fourier transform solvers. The phase difference can be used to infer information about objects in the path of the defocused wavefront. For example, it can be used to determine an object's shape, surface profile, or refractive index profile. It can also be used to calculate path length differences for actuating adaptive optical systems. Compared to other techniques, deriving phase from defocused color images is faster, simpler, and can be implemented using standard color filters.
    • 与散焦波前相关联的相位差可以从单个彩色图像确定。 使用作为波长的函数的强度测量值的彩色图像来计算相对于图像平面上的波长的强度变化。 然后可以使用强度的变化来使用二维快速傅里叶变换解算器估计与散焦波前相关联的相位差。 相位差可用于推断散焦波前路径中的物体信息。 例如,它可以用于确定物体的形状,表面轮廓或折射率分布。 它也可以用于计算启动自适应光学系统的路径长度差异。 与其他技术相比,散焦色彩图像的相位更快,更简单,可以使用标准滤色镜实现。
    • 34. 发明申请
    • SYSTEM, METHOD AND APPARATUS FOR PHASE-CODED MULTI-PLANE MICROSCOPY
    • 用于相位编码多平板显微镜的系统,方法和装置
    • US20120327490A1
    • 2012-12-27
    • US13476768
    • 2012-05-21
    • George BarbastathisYuan Luo
    • George BarbastathisYuan Luo
    • G02B5/32G03H1/08
    • G03H1/0005G02B5/32G03H1/0248G03H1/2286G03H1/28G03H2001/2675
    • A volume holographic imaging system enables the projection of a two-dimensional (2D) slice of a four-dimensional (4D) object. The 4D source object is illuminated to emit or scatter an optical field. A holographic element having one or more recorded holograms receives and diffracts the optical field into a diffracted plane beam. A phase mask is encoded in one or more multiplexed holographic gratings of the holographic element using a spatial filter. A collector lens focuses the diffracted plane beam to a 2D slice of the 4D probing source object. The focused 2D slice is projected onto a 2D imaging plane. The holographic element may have multiple multiplexed holograms that are arranged to diffract light from a corresponding slice of the 4D probing source object to a non-overlapping region of the detector.
    • 体积全息成像系统能够投影四维(4D)物体的二维(2D)切片。 4D源对象被照亮以发射或散射光场。 具有一个或多个记录的全息图的全息元件接收衍射光学衍射到衍射平面光束。 使用空间滤波器将相位掩模编码在全息元件的一个或多个复用全息光栅中。 收集透镜将衍射平面光束聚焦到4D探测源对象的2D切片。 聚焦的2D切片投影到2D成像平面上。 全息元件可以具有多个复用全息图,其被布置成将来自4D探测源对象的相应切片的光衍射到检测器的非重叠区域。
    • 38. 发明授权
    • Holographic imaging spectrometer
    • 全息成像光谱仪
    • US07158228B2
    • 2007-01-02
    • US10627184
    • 2003-07-25
    • Demetri PsaltisWenhai LiuJose MumbruGeorge Barbastathis
    • Demetri PsaltisWenhai LiuJose MumbruGeorge Barbastathis
    • G01J3/12G01J3/18
    • G01J3/1838G01B9/021G01J3/2823
    • A holographic imaging spectrometer, apparatus, and/or method enables the projection of a two-dimensional (2D) slice (having spectral information) of a four-dimensional (4D) probing object. A 4D probing source object is illuminated to emit an optical field. A holographic element having one or more recorded holograms receives and diffracts the optical field into a diffracted plane beam having spectral information. Collector optics (e.g., an imaging lens) focuses the diffracted plane beam having spectral information to a 2D slice (having spectral information) of the 4D probing source object. The focused 2D slice having spectral information is projected onto a 2D detector array surface. In addition, the holographic element may have multiple multiplexed holograms that are arranged to diffract light from the corresponding slice of the 4D probing source object to a non-overlapping section of the detector.
    • 全息成像光谱仪,装置和/或方法使得能够投影四维(4D)探测对象的二维(2D)切片(具有光谱信息)。 4D探测源物体被照亮以发射光场。 具有一个或多个记录的全息图的全息元件接收并将光场衍射成具有光谱信息的衍射平面光束。 收集器光学器件(例如,成像透镜)将具有光谱信息的衍射平面光束聚焦到4D探测源对象的2D切片(具有光谱信息)。 具有光谱信息的聚焦2D切片被投影到2D检测器阵列表面上。 此外,全息元件可以具有多个复用全息图,其被布置为将来自4D探测源对象的相应切片的光衍射到检测器的非重叠部分。