公开(公告)号：US20020109839A1

公开(公告)日：2002-08-15

申请号：US10068623

申请日：2002-02-05

Inventor： Robert J. Faus ,  Brian Curtiss ,  Daniel A. Powell

IPC: G01J003/28

CPC classification number: B07C5/342 ,  G01J3/28 ,  G01J2003/2866 ,  G01N21/274 ,  G01N21/9508

Abstract: A method of calibrating a spectrographic inspection system, comprises providing a plurality of packages, each of the plurality of packages containing a group of items, wherein each of the groups of items has a known composition, measuring the reflectance value of each of the groups of items and thereby obtaining a reference reflectance value set, normalizing the reference reflectance value set and thereby creating a normalized reference reflectance value set, and storing the normalized reference reflectance value set.

Abstract translation: 一种校准光谱检查系统的方法，包括提供多个包装，所述多个包装件中的每一个包含一组物品，其中每组物品具有已知组成，测量每组物品的反射率值 从而获得设定的基准反射率值，归一化所设定的基准反射率值，从而生成归一化参考反射率值集合，并存储归一化参考反射率值集合。

公开(公告)号：US20020101587A1

公开(公告)日：2002-08-01

申请号：US09734242

申请日：2000-12-04

Applicant: National Aeronautics and Space Administration

Inventor： Daniel W. Wilson ,  Paul D. Maker ,  Richard E. Muller ,  Pantazis Z. Mouroulis

IPC: G01J003/28 ,  G01J003/18 ,  G02B005/18

CPC classification number: G01J3/02 ,  G01J3/0208 ,  G01J3/18 ,  G01J3/2823 ,  G02B5/1861

Abstract: The optical system of this invention is an unique type of imaging spectrometer, i.e. an instrument that can determine the spectra of all points in a two-dimensional scene. The general type of imaging spectrometer under which this invention falls has been termed a computed-tomography imaging spectrometer (CTIS). CTIS's have the ability to perform spectral imaging of scenes containing rapidly moving objects or evolving features, hereafter referred to as transient scenes. This invention, a reflective CTIS with an unique two-dimensional reflective grating, can operate in any wavelength band from the ultraviolet through long-wave infrared. Although this spectrometer is especially useful for rapidly occurring events it is also useful for investigation of some slow moving phenomena as in the life sciences.

Abstract translation: 本发明的光学系统是独特类型的成像光谱仪，即可以确定二维场景中所有点的光谱的仪器。 本发明所属的一般类型的成像光谱仪被称为计算机断层成像光谱仪（CTIS）。 CTIS有能力对包含快速移动物体或演变特征的场景进行光谱成像，以下简称瞬态场景。 本发明具有独特的二维反射光栅的反射CTIS可以在紫外线通过长波红外线的任何波段中工作。 虽然这种光谱仪对于快速发生的事件特别有用，但也有助于对生命科学中的一些缓慢移动的现象进行调查。

公开(公告)号：US20020071118A1

公开(公告)日：2002-06-13

申请号：US10011437

申请日：2001-12-11

Inventor： Masashi Shinbori ,  Hiroyuki Kameda ,  Kotaro Moroishi

IPC: G01J003/28

CPC classification number: G01N21/4738 ,  G01J3/02 ,  G01J3/0205 ,  G01J3/0208 ,  G01J3/0218 ,  G01J3/10 ,  G01M11/005 ,  G01N21/33 ,  G01N2021/4742

Abstract: A device for measurement of the spectral reflectance of a surface where the reflectance factor of light with a certain wavelength can be measured in a wide wavelength range, including the UV range, and in which a reference reflectance factor can be easily obtained. The device for measurement has a light source part with a xenon lamp; a fiber on the incidence side; a measurement head which emits the light transmitted by the fiber via a convergent lens and a diffuser onto the surface of the measuring object and which receives the light reflected by the surface; a fiber on the exit side; and a spectroradiometer which receives the light which has been transmitted by the fiber on the exit side.

Abstract translation: 可以在包括UV范围的宽波长范围内测量具有一定波长的光的反射率的表面的光谱反射率的装置，其中可以容易地获得参考反射系数。 用于测量的装置具有带氙灯的光源部分; 发病侧的纤维; 测量头，其通过会聚透镜和漫射器将由光纤传输的光发射到测量对象的表面上，并接收由表面反射的光; 出口侧的纤维; 以及光谱辐射计，其接收由光纤在出射侧发射的光。

公开(公告)号：US20020060785A1

公开(公告)日：2002-05-23

申请号：US09828025

申请日：2001-04-06

Inventor： J. Christopher Dries ,  Marshall Cohen

IPC: G01N021/00 ,  G01J003/28 ,  G01J004/00

CPC classification number: H04B10/07955 ,  G01J3/2803 ,  G01J3/447 ,  G01J4/04 ,  G02B6/29371 ,  G02B6/29385 ,  H04B10/077 ,  H04J14/02

Abstract: An apparatus for use in wave division multiplexing optical telecommunication systems includes a dual photodiode array which converts parallel and perpendicularly polarized light beams at given wavelengths to electrical signals which are digitized and used to rapidly and simultaneously determine all wavelengths and associated components of power and angle of polarization. This information can be displayed for monitoring purposes, or can be used to control signals travelling through optical fiber.

Abstract translation: 用于波分复用光通信系统的装置包括双光电二极管阵列，其将给定波长的平行和垂直偏振光束转换成电信号，电信号被数字化并用于快速并同时确定功率和角度的所有波长和相关分量 极化。 该信息可以显示用于监视目的，也可以用于控制通过光纤传播的信号。

公开(公告)号：US20020054289A1

公开(公告)日：2002-05-09

申请号：US09952718

申请日：2001-09-12

Applicant: INSTITUT NATIONAL D'OPTIQUE

Inventor： Simon Thibault ,  Carl Paquet

IPC: G01J003/28

CPC classification number: G01J3/02 ,  G01J3/0208 ,  G01J3/28 ,  G01J2003/2866 ,  G02B13/0005

Abstract: A linear spectrometer for spectrally measuring an optical signal. The spectrometer has an input receiving the signal which is then diffracted onto a diffraction grating. The signal is therefore divided into its spectral components, each component being diffracted at an angle null. A correcting element, such as a lens, a group of lenses, a mirror, etc. is provided for focusing the spectral components on an image plane where they are detected. The correcting element is designed so that the resulting distribution of the spectral components on the image plane is linear with respect to the component's wavelength.

Abstract translation: 用于光谱测量光信号的线性光谱仪。 光谱仪具有接收信号的输入，然后衍射到衍射光栅上。 因此，信号被分成其光谱分量，每个分量以角度θ被衍射。 提供诸如透镜，一组透镜，反射镜等的校正元件，用于将光谱分量聚焦在被检测到的图像平面上。 校正元件被设计成使得所得到的图像平面上的光谱分量的分布相对于分量的波长是线性的。

公开(公告)号：US20020044280A1

公开(公告)日：2002-04-18

申请号：US09972037

申请日：2001-10-09

Inventor： Adam Mark Weigold ,  Peter Graham Foster

IPC: G01J003/12 ,  G01J003/28

CPC classification number: G01J3/1804 ,  G01J3/06 ,  G01J2003/2866

Abstract: The invention provides a method and apparatus for determining the wavelength of a sample source of light, the apparatus having a reference light source of known wavelength, a collimator for collimating light from the sample source and from the reference source, a dispersing means for receiving and spatially dispersing collimated light from the collimator according to wavelength, focusing means for focusing dispersed light from the dispersing means, and a photodetector located in the focal plane of the focusing means and having an aperture for spatially selectively admitting light from the focusing means, and operable to provide a temporally calibratable output signal indicative of the wavelength of the selectively admitted light, wherein the apparatus is operable to scan the focused spatially dispersed beam across the aperture, and the photodetector output includes resolvable features corresponding to light from the reference source and sample source, whereby a time difference between the features is indicative of a wavelength difference between the light from the reference source and the sample source.

Abstract translation: 本发明提供了一种用于确定样品光源的波长的方法和装置，该装置具有已知波长的参考光源，用于准直来自样品源和参考源的光的准直器，用于接收和 根据波长对来自准直器的准直光进行空间分散，用于聚焦来自分散装置的分散光的聚焦装置，以及位于聚焦装置的焦平面中的光电检测器，并具有用于空间选择性地允许来自聚焦装置的光的孔， 以提供指示所选择的入射光的波长的可临时校准的输出信号，其中该装置可操作以扫过聚焦的空间分散的光束穿过孔，并且光电检测器输出包括对应于来自参考源和样品源的光的可分辨特征 ，由此之间的时间差 这些特征表示来自参考源的光和样品源之间的波长差。

公开(公告)号：US20020024665A1

公开(公告)日：2002-02-28

申请号：US09849831

申请日：2001-05-04

Inventor： Billy R. Masten

IPC: G01J003/28

CPC classification number: A01M7/0089 ,  A01M21/043 ,  G01J3/28 ,  G01J3/42 ,  G01N21/31 ,  G01N21/3563

Abstract: A high speed, low cost, wide spectrum light scanning and sensor unit (10) for receiving reflected light from an object and diffracting the light into segments of wavelengths and a linear sensor array (32) having elements positioned to receive the segments and to measure the relative magnitude of such segments to define a spectral distribution of the object together with a digital identifier-controller (36) connected to said sensing device and having a memory for memorizing a spectral distribution of light representing a first standard object, and additional memory for receiving a spectral distributions of other objects and programmable logic circuitry containing a program for determining the similarity between the standard object and the other objects.

Abstract translation: 一种高速，低成本，宽光谱光扫描和传感器单元（10），用于接收来自物体的反射光并将光衍射成波长段;以及线性传感器阵列（32），其具有被定位成接收段的元件和测量 这些片段的相对大小与连接到所述感测装置的数字标识符 - 控制器（36）一起定义对象的频谱分布，并具有用于存储表示第一标准对象的光的频谱分布的存储器，以及用于 接收包含用于确定标准对象和其他对象之间的相似度的程序的其他对象和可编程逻辑电路的频谱分布。

公开(公告)号：US20020008872A1

公开(公告)日：2002-01-24

申请号：US09876731

申请日：2001-06-07

Applicant: Winbond Electronics Corp.

Inventor： Szetsen Steven Lee

IPC: G01J003/28

CPC classification number: G01B11/00 ,  G01J3/443

Abstract: This invention provides a method for accurately measuring a gap distance between two electrodes. According to the method, a plasma space is formed between the electrodes, across which a DC voltage is coupled. The plasma space has a reactive gas that emits a spectrum of spectral lines. The spectrum is monitored to determine at least one line distance between the spectral lines. Finally, the gap distance can be deduced according to the line distance and a specific rule.

Abstract translation: 本发明提供一种精确测量两个电极之间的间隙距离的方法。 根据该方法，在电极之间形成等离子体空间，通过该电极连接DC电压。 等离子体空间具有发射光谱线谱的反应气体。 监测光谱以确定光谱线之间的至少一行距离。 最后，可以根据行距离和具体规则推导间隙距离。

公开(公告)号：US20020001080A1

公开(公告)日：2002-01-03

申请号：US09921040

申请日：2001-08-02

Applicant: Cambridge Research & Instrumentation, Inc., Massachusetts corporation

Inventor： Peter J. Miller ,  Clifford C. Hoyt

IPC: G01J003/28

CPC classification number: G01J3/02 ,  G01J1/08 ,  G01J3/0218 ,  G01J3/10 ,  G01J3/2823 ,  G01J3/465 ,  G01J3/50 ,  G01J3/501 ,  G01J2003/467 ,  G01N21/31

Abstract: An imaging system is disclosed comprising an illuminator which produces illumination of any desired pure wavelength or of any selected mixture of pure wavelengths simultaneously, which illuminates a sample without spatio-spectral artifacts using illumination optics designed for that purpose; imaging optics, which form an image of the sample at a detector or viewing port; and a detector. This enables imaging the complete spectral image cube for a sample by taking sequential images while illuminating with a series of pure wavelengths, with greater ease and economy than by means of tunable filters, interferometers and the like. It further enables imaging while the sample is illuminated with a precisely controlled mixture of illuminant wavelengths, so that the image presented to the detector is a linear superposition of the sample properties at many wavelengths. This enables taking images of a sample' that directly measure the weighted spectral properties such as projection pursuit vectors, principal components, and the like. Data acquisition is enormously simplified, and speed is increased by one to two orders of magnitude over existing techniques. This is of great benefit in pathology, immunohistochemistry, Pap smear analysis, endoscopy, counterfeit detection, quality control, and other areas where one wishes to measure a spectral index of a living or inert sample.

Abstract translation: 公开了一种成像系统，其包括照明器，该照明器同时产生任何所需纯波长或任何选定的纯波长混合物的照明，其使用为此目的设计的照明光学器件而不使用空间光谱伪像照亮样品; 成像光学器件，其在检测器或观察端口处形成样品的图像; 和检测器。 这使得通过采用一系列纯波长的照射，通过采用顺序图像来成像样品的完整光谱图像立方体，比通过可调滤波器，干涉仪等更容易和经济地进行照射。 当采用精确控制的发光体波长的混合物照射样品时，它进一步实现成像，使得呈现给检测器的图像是许多波长处的样品特性的线性叠加。 这使得能够拍摄直接测量加权光谱特性的样本的图像，例如投影追踪矢量，主成分等。 数据采集​​大大简化，速度比现有技术提高了一到二个数量级。 这在病理学，免疫组织化学，巴氏涂片分析，内窥镜检查，假冒检测，质量控制以及其他希望测量活体或惰性样品的光谱指数的领域是非常有益的。

公开(公告)号：US20010046047A1

公开(公告)日：2001-11-29

申请号：US09728247

申请日：2000-11-30

Inventor： Damond V. Ryer

IPC: G01J003/18 ,  G01J003/28

CPC classification number: G01J3/28 ,  G01J3/02 ,  G01J3/0208 ,  G01J3/0291 ,  G01J3/06 ,  G01J3/12 ,  G01J3/18 ,  G01J2003/1828

Abstract: A spectrometer, or a spectral instrument using multiple non-interfering optical beam paths and special optical elements. The special optical elements for use with the instrument are used for directing the optical beam and/or altering the form of the beam. The instrument has the potential, depending upon the totality of the optical components incorporated into the instrument, to be a monochromator, a spectroradiometer, a spectrophotometer and a spectral source. The spectral instrument may further be a part of the spectral system. The system may include the spectral instrument, a power module and means for remote control of the instrument. Such remote control may be by use of a personal computer or a control system dedicated to the control, measurement and analysis of the collected information. The multiple non-interfering beam paths are created using specially designed optical elements such as a diffraction grating, a splitter box, a zero back-lash drive system for movement of the grating element. The orientation of and a physical/spatial relationship between the field lenses, slits, return mirror, reflecting prism, turning lenses all define the multiple, preferably two paths. Particularly, there is a double pass through the grating to increase dispersion, reduce scatter while maintaining a perfect temperature independent spectral match for the second pass. Using the same grating twice reduces scatter by about a factor of 1000, increases the dispersion by a factor of two, and eliminates any temperature-related mechanical spectral drift which often is present with two separate monochromators. Because of the specially designed grating structure, the grating can cause the concurrent diffraction of a plurality of incident optical beams, each of which beams have different angles of incidence and different angles of reflection. The path of the incident and the reflected beam to and from the grating is nulloff-axisnull. That is, the beams going to and from the grating do not use the optical axis of the grating structure.