中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

395 records (took 0.034 seconds)

    Coded Aperture Snapshot Spectral Imager and Method Therefor
    31.
    发明申请
    Coded Aperture Snapshot Spectral Imager and Method Therefor 有权
    编码孔径快照光谱成像仪及其方法

    公开(公告)号：US20100253941A1

    公开(公告)日：2010-10-07

    申请号：US12422031

    申请日：2009-04-10

    Applicant: David Jones Brady ,  Scott Thomas McCain ,  Andrew David Portnoy

    Inventor： David Jones Brady ,  Scott Thomas McCain ,  Andrew David Portnoy

    IPC: G01J3/04

    CPC classification number: G01J3/2823 ,  G01J3/02 ,  G01J3/0208 ,  G01J3/0229 ,  G01J3/2803

    Abstract: The present invention enables snap-shot spectral imaging of a scene at high image generation rates. Light from the scene is processed through an optical system that comprises a coded-aperture. The optical system projects a plurality of images, each characterized by only one of a plurality of spectral components, onto a photodetector array. The plurality of images is interspersed on the photodetector array, but no photodetector receives light characterized by more than one of the plurality of spectral components. As a result, computation of the spatio-spectral datacube that describes the scene is simplified. The present invention, therefore, enables rapid spectral imaging of the scene.

    Abstract translation: 本发明能够以高图像产生速率对场景进行快照光谱成像。 来自现场的光通过包括编码孔径的光学系统进行处理。 光学系统将多个以多个光谱分量中的仅一个为特征的多个图像投影到光电检测器阵列上。 多个图像散布在光电检测器阵列上，但是没有光电检测器接收由多个光谱分量中的多于一个表征的光。 结果，简化了描述场景的空间光谱数据存储器的计算。 因此，本发明能够实现场景的快速光谱成像。

    Micro Ring Grating Spectrometer with Adjustable Aperture
    32.
    发明申请
    Micro Ring Grating Spectrometer with Adjustable Aperture 有权
    具有可调孔径的微环光栅

    公开(公告)号：US20100039641A1

    公开(公告)日：2010-02-18

    申请号：US12487735

    申请日：2009-06-19

    Applicant: Yeonjoon Park ,  Glen C. King ,  James R. Elliott ,  Sang H. Choi

    Inventor： Yeonjoon Park ,  Glen C. King ,  James R. Elliott ,  Sang H. Choi

    IPC: G01J3/04 ,  G01J3/28

    CPC classification number: G01J3/18 ,  G01J3/02 ,  G01J3/0229 ,  G01J3/0237 ,  G01J3/0256 ,  G02B5/005 ,  G02B5/1876

    Abstract: A spectrometer includes a micro-ring grating device having coaxially-aligned ring gratings for diffracting incident light onto a target focal point, a detection device for detecting light intensity, one or more actuators, and an adjustable aperture device defining a circular aperture. The aperture circumscribes a target focal point, and directs a light to the detection device. The aperture device is selectively adjustable using the actuators to select a portion of a frequency band for transmission to the detection device. A method of detecting intensity of a selected band of incident light includes directing incident light onto coaxially-aligned ring gratings of a micro-ring grating device, and diffracting the selected band onto a target focal point using the ring gratings. The method includes using an actuator to adjust an aperture device and pass a selected portion of the frequency band to a detection device for measuring the intensity of the selected portion.

    Abstract translation: 光谱仪包括具有用于将入射光衍射到目标焦点的同轴对准环形光栅的微环格栅装置，用于检测光强度的检测装置，一个或多个致动器以及限定圆形孔径的可调节孔径装置。 光圈限定目标焦点，并将光引导到检测装置。 使用致动器可选择性地调节孔径装置，以选择频带的一部分以传输到检测装置。 检测入射光的所选频带的强度的方法包括将入射光引导到微环光栅装置的同轴对准的环形光栅上，并使用环形光栅将所选择的带衍射到目标焦点上。 该方法包括使用致动器来调节孔径装置并将频带的选定部分传递到用于测量所选部分的强度的检测装置。

    Spectral imaging apparatus and methods
    38.
    发明申请
    Spectral imaging apparatus and methods 有权
    光谱成像装置及方法

    公开(公告)号：US20050036141A1

    公开(公告)日：2005-02-17

    申请号：US10945404

    申请日：2004-09-20

    Applicant: Isaac Richman

    Inventor： Isaac Richman

    IPC: G01J3/02 ,  G01J3/04 ,  G01J3/28

    CPC classification number: G01J3/04 ,  G01J3/02 ,  G01J3/0208 ,  G01J3/0243 ,  G01J3/2823

    Abstract: Spectral imaging apparatus and methods are disclosed. In one embodiment, a spectral imaging apparatus includes a spectral imaging apparatus includes a diffraction grating having one or more entrance apertures formed therein, a collecting reflecting element for reflecting said incident radiation to a diffractive surface of said diffraction grating, and a reimaging system adapted to provide a spectral image at a focal surface. The collecting reflecting element may include an aspherically-shaped portion, and the entrance apertures may be distributed along a straight or a non-straight axis. Alternately, optical fibres may be disposed in the entrance apertures. The spectral image provides a spectrum of radiation such that a first portion of the spectrum of radiation from a first region can be distinguished from a second portion of the spectrum of radiation from a second region.

    Abstract translation: 公开了光谱成像装置和方法。 在一个实施例中，光谱成像设备包括光谱成像设备，其包括具有形成在其中的一个或多个入射孔的衍射光栅，用于将所述入射辐射反射到所述衍射光栅的衍射表面的收集​​反射元件，以及适于 在焦点表面提供光谱图像。 收集反射元件可以包括非球面形状的部分，并且入口孔可以沿直线或非直线轴线分布。 或者，光纤可以设置在入口孔中。 光谱图像提供辐射光谱，使得来自第一区域的辐射光谱的第一部分可以与来自第二区域的辐射光谱的第二部分区分开。

    Multi-slit spectrometer
    39.
    发明授权
    Multi-slit spectrometer 失效
    多光谱仪

    公开(公告)号：US6122051A

    公开(公告)日：2000-09-19

    申请号：US090712

    申请日：1998-06-04

    Applicant: David A. Ansley ,  Lacy G. Cook

    Inventor： David A. Ansley ,  Lacy G. Cook

    IPC: G01J3/04 ,  G01J3/28 ,  G01J3/14

    CPC classification number: G01J3/02 ,  G01J3/0208 ,  G01J3/0294 ,  G01J3/04 ,  G01J3/2823

    Abstract: A multi-slit spectrometer is combined with a two-dimensional detector array to enable simultaneous spectral analysis of several objects, improving the signal-to-noise ratio of multispectral imagery. The multi-slit spectrometer includes a multi-slit structure defining a plurality of parallel thin slits, and a first lens for directing object light onto the multi-slit structure. A second lens collimates and directs light which has passed through the slits of the multi-slit structure onto a light dispersing element such as a dispersing prism or a diffraction grating. A third lens focuses light which has passed through the light dispersing element onto the two-dimensional detector array at an image plane. A two dimensional detector array of detector elements is placed at the image plane. The slits are separated by a separation distance equal to an integral multiple of the detector width dimension, where the multiple is equal to (N times the number of slits) plus or minus one, where N is an integer. In an airborne sensor, a mirror which rotates at an angular velocity related to the velocity of the airborne platform directs object light onto the first lens, freezing the image from one or more objects onto the multi-slit structure for an integration time.

    Abstract translation: 多狭缝光谱仪与二维检测器阵列相结合，可同时对多个物体进行光谱分析，从而提高多光谱图像的信噪比。 多狭缝光谱仪包括限定多个平行薄狭缝的多狭缝结构和用于将物体光引导到多狭缝结构上的第一透镜。 第二透镜将通过多狭缝结构的狭缝的光准直并引导到诸如分散棱镜或衍射光栅的光分散元件上。 第三透镜将已经通过光分散元件的光聚焦在图像平面上的二维检测器阵列上。 检测器元件的二维检测器阵列放置在图像平面处。 狭缝被分开等于检测器宽度尺寸的整数倍的间隔距离，其中倍数等于（N倍的狭缝数）加或减1，其中N是整数。 在机载传感器中，以与空中平台的速度相关的角速度旋转的反射镜将物体光引导到第一透镜上，将图像从一个或多个物体冷冻到多狭缝结构上用于积分时间。

Patent Agency Ranking