Spectral and temporal stealthy fiber optic communication using sampling and phase encoding detection systems
    1.
    发明授权
    Spectral and temporal stealthy fiber optic communication using sampling and phase encoding detection systems 有权
    使用采样和相位编码检测系统的光谱和时间隐形光纤通信

    公开(公告)号:US09288045B2

    公开(公告)日:2016-03-15

    申请号:US14232655

    申请日:2012-07-17

    摘要: A method for providing spectral and temporal stealthy information transmitted over an optical communication channel, according to which, at the transmitting side, the power spectral density of a pulse sequence bearing the information is reduced by encrypting the temporal phase of the pulse sequence. The power of the pulse sequence is spread in the frequency domain, to be below the noise level, by sampling the pulse sequence. Spectral phase encoding is used to temporally spread the pulse sequence and to prevent coherent addition of its spectral replicas in frequency domain. The resulting signal, encrypted both in time and frequency domains, is then transmitted. Spectral phase decoding is performed at the receiving side by performing coherent detection and folding all the spectral replicas of the transmitted signal to the baseband by means of sampling. The temporal phase of the signal is decrypted and the information which is delivered by the pulse sequence is decoded.

    摘要翻译: 一种用于提供通过光通信信道发送的频谱和时间隐形信息的方法,根据该方法,在发送侧,通过加密脉冲序列的时间相位来减少携带信息的脉冲序列的功率谱密度。 通过采样脉冲序列,脉冲序列的功率在频域中扩展,低于噪声电平。 频谱相位编码用于时间扩展脉冲序列,并防止其频域中的频谱复制的相干相加。 随后发送在时域和频域加密的结果信号。 通过执行相干检测并通过采样将发射信号的所有光谱复制品折叠到基带,在接收侧执行光谱相位解码。 信号的时间相位被解密,并且由脉冲序列传送的信息被解码。

    Optical apparatus with structure for liquid invariant performance

    公开(公告)号:US10031334B2

    公开(公告)日:2018-07-24

    申请号:US13578158

    申请日:2011-02-09

    摘要: A phase-adjusting element configured to provide substantially liquid-invariant extended depth of field for an associated optical lens. One example of a lens incorporating the phase-adjusting element includes the lens having surface with a modulated relief defining a plurality of regions including a first region and a second region, the first region having a depth relative to the second region, and a plurality of nanostructures formed in the first region. The depth of the first region and a spacing between adjacent nanostructures of the plurality of nanostructures is selected to provide a selected average index of refraction of the first region, and the spacing between adjacent nanostructures of the plurality of nanostructures is sufficiently small that the first region does not substantially diffract visible light.

    Method and system for providing three-dimensional and range inter-planar estimation
    3.
    发明授权
    Method and system for providing three-dimensional and range inter-planar estimation 有权
    提供三维和范围平面估计的方法和系统

    公开(公告)号:US08908016B2

    公开(公告)日:2014-12-09

    申请号:US13122633

    申请日:2009-10-11

    摘要: A system, apparatus and method of performing 3-D object profile inter-planar estimation and/or range inter-planar estimation of objects within a scene, including: providing a predefined finite set of distinct types of features, resulting in feature types, each feature type being distinguishable according to a unique bi-dimensional formation; providing a coded light pattern having multiple appearances of the feature types; projecting the coded light pattern, having axially varying intensity, on objects within a scene, the scene having at least two planes, resulting in a first plane and a second plane; capturing a 2-D image of the objects having the projected coded light pattern projected thereupon, resulting in a captured 2-D image, the captured 2-D image including reflected feature types; determining intensity values of the 2-D captured image; and performing 3-D object profile inter-planar estimation and/or range inter-planar estimation of objects within the scene based on determined intensity values.

    摘要翻译: 执行场景内的对象的3-D对象轮廓平面间估计和/或范围平面内估计的系统,装置和方法,包括:提供预定义的有限集合的不同类型的特征,导致特征类型,每个 特征类型根据独特的二维形成是可区分的; 提供具有多种特征类型的外观的编码光图案; 将具有轴向变化的强度的编码光图案投射到场景内的物体上,所述场景具有至少两个平面,导致第一平面和第二平面; 拍摄具有投影的投影编码光图案的物体的2-D图像,导致捕获的2-D图像,所捕获的2-D图像包括反射的特征类型; 确定2-D拍摄图像的强度值; 以及基于确定的强度值,对所述场景内的对象进行3-D对象轮廓平面内估计和/或范围内平面估计。

    IMAGING SYSTEM AND METHOD USING MULTICORE FIBER
    4.
    发明申请
    IMAGING SYSTEM AND METHOD USING MULTICORE FIBER 审中-公开
    成像系统和使用多光纤的方法

    公开(公告)号:US20130278740A1

    公开(公告)日:2013-10-24

    申请号:US13978423

    申请日:2012-01-05

    IPC分类号: A61B1/07

    摘要: The present invention provides a system for imaging an object comprising: an optical imaging unit for imaging an object on a detection array, the optical imaging unit defining an optical axis and comprising a multicore fiber configured to collect light from the object at an input edge of the multicore fiber and transfer collected light to an output edge of the multicore fiber; a displacing unit configured to shift the input edge of the multicore fiber relatively to the object in a plane substantially perpendicular to the optical axis to obtain a set of shifted images of the object; and an operating unit configured to operate the displacing unit by setting a shifting amplitude to either a first amplitude inferior or equal to the diameter of a core of the multicore fiber or a second amplitude superior or equal to the diameter of the multicore fiber.

    摘要翻译: 本发明提供了一种用于对物体成像的系统,包括:用于对检测阵列上的物体进行成像的光学成像单元,所述光学成像单元限定光轴并且包括多芯光纤,所述多芯光纤被配置为在来自所述物体的输入边缘处收集来自所述物体的光 多芯纤维并将收集的光转移到多芯纤维的输出边缘; 位移单元,被配置为在基本上垂直于光轴的平面中相对于物体移动多芯光纤的输入边缘,以获得一组物体的偏移图像; 以及操作单元,其被配置为通过将移动幅度设置为低于或等于所述多芯光纤的芯的直径的第一幅度或者高于或等于所述多芯光纤的直径的第二幅度来操作所述移位单元。

    BLIND SIGHT
    5.
    发明申请

    公开(公告)号:US20130253608A1

    公开(公告)日:2013-09-26

    申请号:US13880060

    申请日:2011-10-17

    IPC分类号: A61N1/36

    CPC分类号: A61N1/3605 A61N1/36046

    摘要: A sensory substitution device (SSD) for providing a person with neural signals responsive to features of an environment, the SSD comprising: at least one camera that acquires an image of the environment; and at least one corneal neural stimulator that stimulates nerve endings in the cornea of an eye of the person to generate neural signals responsive to the image that propagate to the person's brain.

    摘要翻译: 一种用于向人提供响应于环境特征的神经信号的感觉替代装置(SSD),所述SSD包括:获取环境图像的至少一个照相机; 以及至少一个角膜神经刺激器,其刺激人眼睛中的神经末梢以产生响应于传播到人的大脑的图像的神经信号。

    Three-dimensional sensing using speckle patterns
    6.
    发明授权
    Three-dimensional sensing using speckle patterns 有权
    三维感应使用斑点图案

    公开(公告)号:US08390821B2

    公开(公告)日:2013-03-05

    申请号:US12282517

    申请日:2007-03-08

    IPC分类号: G01B11/02

    摘要: Apparatus (20) for 3D mapping of an object (28) includes an illumination assembly (30), including a coherent light source (32) and a diffuser (33), which are arranged to project a primary speckle pattern on the object. A single image capture assembly (38) is arranged to capture images of the primary speckle pattern on the object from a single, fixed location and angle relative to the illumination assembly. A processor (24) is coupled to process the images of the primary speckle pattern captured at the single, fixed angle so as to derive a 3D map of the object.

    摘要翻译: 一种用于物体(28)的3D映射的装置(20)包括照明组件(30),其包括相干光源(32)和漫射器(33),其布置成将主要散斑图案投射在物体上。 单个图像捕获组件(38)布置成从相对于照明组件的单个固定位置和角度捕获物体上的主要斑纹图案的图像。 处理器(24)被耦合以处理以单个固定角度捕获的主要斑纹图案的图像,以便导出对象的3D图。

    OPTICAL MASK FOR ALL-OPTICAL EXTENDED DEPTH-OF-FIELD FOR IMAGING SYSTEMS UNDER INCOHERENT ILLUMINATION
    7.
    发明申请
    OPTICAL MASK FOR ALL-OPTICAL EXTENDED DEPTH-OF-FIELD FOR IMAGING SYSTEMS UNDER INCOHERENT ILLUMINATION 有权
    用于无光照射下成像系统全光学扩展深度的光学掩模

    公开(公告)号:US20110197428A1

    公开(公告)日:2011-08-18

    申请号:US13027286

    申请日:2011-02-15

    IPC分类号: B23P11/00

    摘要: A method of optical element manufacturing, the method may include selecting a range of a misfocus parameter ψ; and designing the optical element to comprise multiple regions, wherein the optical transfer function (OTF) of the optical element allows, for the range of the misfocus parameter ψ, transmission of images with a contrast of at least 10% for all normalized spatial frequencies up to 50% of a theoretical maximum that is attainable with a full aperture in an in-focus condition.

    摘要翻译: 一种光学元件制造方法,该方法可以包括选择误聚焦参数ψ的范围; 并且将光学元件设计成包括多个区域,其中光学元件的光学传递函数(OTF)允许在误聚焦参数ψ的范围内,对于所有归一化的空间频率上升至少10%的对比度的图像的传输 到理论最大值的50%,其可以在对焦条件下用全孔径来获得。

    Optical method and system for extended depth of focus
    8.
    发明授权
    Optical method and system for extended depth of focus 有权
    用于延长焦深的光学方法和系统

    公开(公告)号:US07859769B2

    公开(公告)日:2010-12-28

    申请号:US12110696

    申请日:2008-04-28

    申请人: Zeev Zalevsky

    发明人: Zeev Zalevsky

    IPC分类号: G02B9/00

    摘要: An imaging arrangement and method for extended the depth of focus are provided. The imaging arrangement comprises an imaging lens having a certain affective aperture, and an optical element associated with said imaging lens. The optical element is configured as a phase-affecting, non-diffractive optical element defining a spatially low frequency phase transition. The optical element and the imaging lens define a predetermined pattern formed by spaced-apart substantially optically transparent features of different optical properties. Position of at least one phase transition region of the optical element within the imaging lens plane is determined by at least a dimension of said affective aperture.

    摘要翻译: 提供了一种用于延长焦深的成像装置和方法。 成像装置包括具有特定情感光圈的成像透镜和与所述成像透镜相关联的光学元件。 光学元件被配置为限定空间上低频相位的相位影响的非衍射光学元件。 光学元件和成像透镜限定由不同光学特性的间隔开的基本上光学透明的特征形成的预定图案。 光学元件的至少一个相变区域在成像透镜平面内的位置由至少所述情感光圈的尺寸确定。

    Optical system and method for multi-range and dual-range imaging
    9.
    发明授权
    Optical system and method for multi-range and dual-range imaging 有权
    用于多范围和双范围成像的光学系统和方法

    公开(公告)号:US07812295B2

    公开(公告)日:2010-10-12

    申请号:US12328297

    申请日:2008-12-04

    IPC分类号: G02B27/40 G02B5/00

    摘要: An imaging system is presented for use in multi-range imaging of an object scene by incoherent light. The imaging system comprises aligned a phase mask section, a single focus lens section, and a pixel detector array (PDA). The phase mask section has a generally non-diffractive, narrowly bounded, phase variation corresponding to a profile of a through-object Modulated Transfer Function (MTF) of the imaging system, where the profile has, at an at least one non-zero spatial frequency, at least two regions of growth leading to the MTF higher than 10%.

    摘要翻译: 提出一种成像系统,用于通过非相干光对物体场景的多范围成像。 成像系统包括对准相位掩模部分,单焦点透镜部分和像素检测器阵列(PDA)。 相位掩模部分具有对应于成像系统的通过对象调制传递函数(MTF)的轮廓的大致非衍射窄边界相位变化,其中轮廓具有至少一个非零空间 频率,至少两个增长的区域,导致MTF高于10%。

    IMAGE PROJECTING DEVICE AND METHOD
    10.
    发明申请
    IMAGE PROJECTING DEVICE AND METHOD 审中-公开
    图像投影设备和方法

    公开(公告)号:US20070047043A1

    公开(公告)日:2007-03-01

    申请号:US11553714

    申请日:2006-10-27

    IPC分类号: G03H1/00

    摘要: An image projecting device and method are presented. The device comprises a light source system operable to produce a light beam to impinge onto an active surface of a spatial light modulator (SLM) unit formed by an SLM pixel arrangement; and a magnification optics accommodated at the output side of the SLM unit. The light beam impinging onto the SLM pixel arrangement has a predetermined cross section corresponding to the size of said active surface. The SLM unit comprises first and second lens' arrays at opposite sides of the pixel arrangement, such that each lens in the first array and a respective opposite lens in the second array are associated with a corresponding one of the SLM pixels

    摘要翻译: 提出了一种图像投影装置和方法。 该装置包括可操作以产生光束以照射到由SLM像素布置形成的空间光调制器(SLM)单元的有源表面上的光源系统; 以及容纳在SLM单元的输出侧的放大光学元件。 入射到SLM像素装置上的光束具有对应于所述有源表面的尺寸的预定横截面。 SLM单元包括在像素排列的相对侧的第一和第二透镜阵列,使得第一阵列中的每个透镜和第二阵列中的相应的相对透镜与SLM像素中的对应的一个相关联